diff options
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 3588 |
1 files changed, 1912 insertions, 1676 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 326c63879ddc..c30e69392a62 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -7,24 +7,24 @@ */ #include <linux/fs.h> #include <linux/f2fs_fs.h> -#include <linux/buffer_head.h> +#include <linux/sched/mm.h> #include <linux/mpage.h> #include <linux/writeback.h> -#include <linux/backing-dev.h> #include <linux/pagevec.h> #include <linux/blkdev.h> #include <linux/bio.h> +#include <linux/blk-crypto.h> #include <linux/swap.h> #include <linux/prefetch.h> #include <linux/uio.h> -#include <linux/cleancache.h> #include <linux/sched/signal.h> #include <linux/fiemap.h> +#include <linux/iomap.h> #include "f2fs.h" #include "node.h" #include "segment.h" -#include "trace.h" +#include "iostat.h" #include <trace/events/f2fs.h> #define NUM_PREALLOC_POST_READ_CTXS 128 @@ -38,10 +38,8 @@ static struct bio_set f2fs_bioset; int __init f2fs_init_bioset(void) { - if (bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE, - 0, BIOSET_NEED_BVECS)) - return -ENOMEM; - return 0; + return bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE, + 0, BIOSET_NEED_BVECS); } void f2fs_destroy_bioset(void) @@ -49,55 +47,32 @@ void f2fs_destroy_bioset(void) bioset_exit(&f2fs_bioset); } -static inline struct bio *__f2fs_bio_alloc(gfp_t gfp_mask, - unsigned int nr_iovecs) -{ - return bio_alloc_bioset(gfp_mask, nr_iovecs, &f2fs_bioset); -} - -struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi, int npages, bool noio) +bool f2fs_is_cp_guaranteed(const struct folio *folio) { - if (noio) { - /* No failure on bio allocation */ - return __f2fs_bio_alloc(GFP_NOIO, npages); - } - - if (time_to_inject(sbi, FAULT_ALLOC_BIO)) { - f2fs_show_injection_info(sbi, FAULT_ALLOC_BIO); - return NULL; - } - - return __f2fs_bio_alloc(GFP_KERNEL, npages); -} - -static bool __is_cp_guaranteed(struct page *page) -{ - struct address_space *mapping = page->mapping; + struct address_space *mapping = folio->mapping; struct inode *inode; struct f2fs_sb_info *sbi; - if (!mapping) - return false; - - if (f2fs_is_compressed_page(page)) - return false; + if (fscrypt_is_bounce_folio(folio)) + return folio_test_f2fs_gcing(fscrypt_pagecache_folio(folio)); inode = mapping->host; sbi = F2FS_I_SB(inode); if (inode->i_ino == F2FS_META_INO(sbi) || - inode->i_ino == F2FS_NODE_INO(sbi) || - S_ISDIR(inode->i_mode) || - (S_ISREG(inode->i_mode) && - (f2fs_is_atomic_file(inode) || IS_NOQUOTA(inode))) || - is_cold_data(page)) + inode->i_ino == F2FS_NODE_INO(sbi) || + S_ISDIR(inode->i_mode)) + return true; + + if ((S_ISREG(inode->i_mode) && IS_NOQUOTA(inode)) || + folio_test_f2fs_gcing(folio)) return true; return false; } -static enum count_type __read_io_type(struct page *page) +static enum count_type __read_io_type(struct folio *folio) { - struct address_space *mapping = page_file_mapping(page); + struct address_space *mapping = folio->mapping; if (mapping) { struct inode *inode = mapping->host; @@ -114,10 +89,21 @@ static enum count_type __read_io_type(struct page *page) /* postprocessing steps for read bios */ enum bio_post_read_step { - STEP_DECRYPT, - STEP_DECOMPRESS_NOWQ, /* handle normal cluster data inplace */ - STEP_DECOMPRESS, /* handle compressed cluster data in workqueue */ - STEP_VERITY, +#ifdef CONFIG_FS_ENCRYPTION + STEP_DECRYPT = BIT(0), +#else + STEP_DECRYPT = 0, /* compile out the decryption-related code */ +#endif +#ifdef CONFIG_F2FS_FS_COMPRESSION + STEP_DECOMPRESS = BIT(1), +#else + STEP_DECOMPRESS = 0, /* compile out the decompression-related code */ +#endif +#ifdef CONFIG_FS_VERITY + STEP_VERITY = BIT(2), +#else + STEP_VERITY = 0, /* compile out the verity-related code */ +#endif }; struct bio_post_read_ctx { @@ -125,263 +111,255 @@ struct bio_post_read_ctx { struct f2fs_sb_info *sbi; struct work_struct work; unsigned int enabled_steps; + /* + * decompression_attempted keeps track of whether + * f2fs_end_read_compressed_page() has been called on the pages in the + * bio that belong to a compressed cluster yet. + */ + bool decompression_attempted; + block_t fs_blkaddr; }; -static void __read_end_io(struct bio *bio, bool compr, bool verity) +/* + * Update and unlock a bio's pages, and free the bio. + * + * This marks pages up-to-date only if there was no error in the bio (I/O error, + * decryption error, or verity error), as indicated by bio->bi_status. + * + * "Compressed pages" (pagecache pages backed by a compressed cluster on-disk) + * aren't marked up-to-date here, as decompression is done on a per-compression- + * cluster basis rather than a per-bio basis. Instead, we only must do two + * things for each compressed page here: call f2fs_end_read_compressed_page() + * with failed=true if an error occurred before it would have normally gotten + * called (i.e., I/O error or decryption error, but *not* verity error), and + * release the bio's reference to the decompress_io_ctx of the page's cluster. + */ +static void f2fs_finish_read_bio(struct bio *bio, bool in_task) { - struct page *page; - struct bio_vec *bv; - struct bvec_iter_all iter_all; + struct folio_iter fi; + struct bio_post_read_ctx *ctx = bio->bi_private; - bio_for_each_segment_all(bv, bio, iter_all) { - page = bv->bv_page; + bio_for_each_folio_all(fi, bio) { + struct folio *folio = fi.folio; -#ifdef CONFIG_F2FS_FS_COMPRESSION - if (compr && f2fs_is_compressed_page(page)) { - f2fs_decompress_pages(bio, page, verity); + if (f2fs_is_compressed_page(folio)) { + if (ctx && !ctx->decompression_attempted) + f2fs_end_read_compressed_page(folio, true, 0, + in_task); + f2fs_put_folio_dic(folio, in_task); continue; } - if (verity) - continue; -#endif - /* PG_error was set if any post_read step failed */ - if (bio->bi_status || PageError(page)) { - ClearPageUptodate(page); - /* will re-read again later */ - ClearPageError(page); - } else { - SetPageUptodate(page); - } - dec_page_count(F2FS_P_SB(page), __read_io_type(page)); - unlock_page(page); + dec_page_count(F2FS_F_SB(folio), __read_io_type(folio)); + folio_end_read(folio, bio->bi_status == BLK_STS_OK); } -} - -static void f2fs_release_read_bio(struct bio *bio); -static void __f2fs_read_end_io(struct bio *bio, bool compr, bool verity) -{ - if (!compr) - __read_end_io(bio, false, verity); - f2fs_release_read_bio(bio); -} - -static void f2fs_decompress_bio(struct bio *bio, bool verity) -{ - __read_end_io(bio, true, verity); -} - -static void bio_post_read_processing(struct bio_post_read_ctx *ctx); - -static void f2fs_decrypt_work(struct bio_post_read_ctx *ctx) -{ - fscrypt_decrypt_bio(ctx->bio); -} - -static void f2fs_decompress_work(struct bio_post_read_ctx *ctx) -{ - f2fs_decompress_bio(ctx->bio, ctx->enabled_steps & (1 << STEP_VERITY)); -} - -#ifdef CONFIG_F2FS_FS_COMPRESSION -static void f2fs_verify_pages(struct page **rpages, unsigned int cluster_size) -{ - f2fs_decompress_end_io(rpages, cluster_size, false, true); -} - -static void f2fs_verify_bio(struct bio *bio) -{ - struct bio_vec *bv; - struct bvec_iter_all iter_all; - - bio_for_each_segment_all(bv, bio, iter_all) { - struct page *page = bv->bv_page; - struct decompress_io_ctx *dic; - - dic = (struct decompress_io_ctx *)page_private(page); - - if (dic) { - if (refcount_dec_not_one(&dic->ref)) - continue; - f2fs_verify_pages(dic->rpages, - dic->cluster_size); - f2fs_free_dic(dic); - continue; - } - if (bio->bi_status || PageError(page)) - goto clear_uptodate; - - if (fsverity_verify_page(page)) { - SetPageUptodate(page); - goto unlock; - } -clear_uptodate: - ClearPageUptodate(page); - ClearPageError(page); -unlock: - dec_page_count(F2FS_P_SB(page), __read_io_type(page)); - unlock_page(page); - } + if (ctx) + mempool_free(ctx, bio_post_read_ctx_pool); + bio_put(bio); } -#endif -static void f2fs_verity_work(struct work_struct *work) +static void f2fs_verify_bio(struct work_struct *work) { struct bio_post_read_ctx *ctx = container_of(work, struct bio_post_read_ctx, work); struct bio *bio = ctx->bio; -#ifdef CONFIG_F2FS_FS_COMPRESSION - unsigned int enabled_steps = ctx->enabled_steps; -#endif + bool may_have_compressed_pages = (ctx->enabled_steps & STEP_DECOMPRESS); /* - * fsverity_verify_bio() may call readpages() again, and while verity - * will be disabled for this, decryption may still be needed, resulting - * in another bio_post_read_ctx being allocated. So to prevent - * deadlocks we need to release the current ctx to the mempool first. - * This assumes that verity is the last post-read step. + * fsverity_verify_bio() may call readahead() again, and while verity + * will be disabled for this, decryption and/or decompression may still + * be needed, resulting in another bio_post_read_ctx being allocated. + * So to prevent deadlocks we need to release the current ctx to the + * mempool first. This assumes that verity is the last post-read step. */ mempool_free(ctx, bio_post_read_ctx_pool); bio->bi_private = NULL; -#ifdef CONFIG_F2FS_FS_COMPRESSION - /* previous step is decompression */ - if (enabled_steps & (1 << STEP_DECOMPRESS)) { - f2fs_verify_bio(bio); - f2fs_release_read_bio(bio); - return; + /* + * Verify the bio's pages with fs-verity. Exclude compressed pages, + * as those were handled separately by f2fs_end_read_compressed_page(). + */ + if (may_have_compressed_pages) { + struct folio_iter fi; + + bio_for_each_folio_all(fi, bio) { + struct folio *folio = fi.folio; + + if (!f2fs_is_compressed_page(folio) && + !fsverity_verify_page(&folio->page)) { + bio->bi_status = BLK_STS_IOERR; + break; + } + } + } else { + fsverity_verify_bio(bio); } -#endif - fsverity_verify_bio(bio); - __f2fs_read_end_io(bio, false, false); + f2fs_finish_read_bio(bio, true); } -static void f2fs_post_read_work(struct work_struct *work) +/* + * If the bio's data needs to be verified with fs-verity, then enqueue the + * verity work for the bio. Otherwise finish the bio now. + * + * Note that to avoid deadlocks, the verity work can't be done on the + * decryption/decompression workqueue. This is because verifying the data pages + * can involve reading verity metadata pages from the file, and these verity + * metadata pages may be encrypted and/or compressed. + */ +static void f2fs_verify_and_finish_bio(struct bio *bio, bool in_task) { - struct bio_post_read_ctx *ctx = - container_of(work, struct bio_post_read_ctx, work); - - if (ctx->enabled_steps & (1 << STEP_DECRYPT)) - f2fs_decrypt_work(ctx); + struct bio_post_read_ctx *ctx = bio->bi_private; - if (ctx->enabled_steps & (1 << STEP_DECOMPRESS)) - f2fs_decompress_work(ctx); - - if (ctx->enabled_steps & (1 << STEP_VERITY)) { - INIT_WORK(&ctx->work, f2fs_verity_work); + if (ctx && (ctx->enabled_steps & STEP_VERITY)) { + INIT_WORK(&ctx->work, f2fs_verify_bio); fsverity_enqueue_verify_work(&ctx->work); - return; + } else { + f2fs_finish_read_bio(bio, in_task); } - - __f2fs_read_end_io(ctx->bio, - ctx->enabled_steps & (1 << STEP_DECOMPRESS), false); } -static void f2fs_enqueue_post_read_work(struct f2fs_sb_info *sbi, - struct work_struct *work) +/* + * Handle STEP_DECOMPRESS by decompressing any compressed clusters whose last + * remaining page was read by @ctx->bio. + * + * Note that a bio may span clusters (even a mix of compressed and uncompressed + * clusters) or be for just part of a cluster. STEP_DECOMPRESS just indicates + * that the bio includes at least one compressed page. The actual decompression + * is done on a per-cluster basis, not a per-bio basis. + */ +static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx, + bool in_task) { - queue_work(sbi->post_read_wq, work); -} + struct folio_iter fi; + bool all_compressed = true; + block_t blkaddr = ctx->fs_blkaddr; + + bio_for_each_folio_all(fi, ctx->bio) { + struct folio *folio = fi.folio; + + if (f2fs_is_compressed_page(folio)) + f2fs_end_read_compressed_page(folio, false, blkaddr, + in_task); + else + all_compressed = false; + + blkaddr++; + } + + ctx->decompression_attempted = true; -static void bio_post_read_processing(struct bio_post_read_ctx *ctx) -{ /* - * We use different work queues for decryption and for verity because - * verity may require reading metadata pages that need decryption, and - * we shouldn't recurse to the same workqueue. + * Optimization: if all the bio's pages are compressed, then scheduling + * the per-bio verity work is unnecessary, as verity will be fully + * handled at the compression cluster level. */ + if (all_compressed) + ctx->enabled_steps &= ~STEP_VERITY; +} - if (ctx->enabled_steps & (1 << STEP_DECRYPT) || - ctx->enabled_steps & (1 << STEP_DECOMPRESS)) { - INIT_WORK(&ctx->work, f2fs_post_read_work); - f2fs_enqueue_post_read_work(ctx->sbi, &ctx->work); - return; - } +static void f2fs_post_read_work(struct work_struct *work) +{ + struct bio_post_read_ctx *ctx = + container_of(work, struct bio_post_read_ctx, work); + struct bio *bio = ctx->bio; - if (ctx->enabled_steps & (1 << STEP_VERITY)) { - INIT_WORK(&ctx->work, f2fs_verity_work); - fsverity_enqueue_verify_work(&ctx->work); + if ((ctx->enabled_steps & STEP_DECRYPT) && !fscrypt_decrypt_bio(bio)) { + f2fs_finish_read_bio(bio, true); return; } - __f2fs_read_end_io(ctx->bio, false, false); -} + if (ctx->enabled_steps & STEP_DECOMPRESS) + f2fs_handle_step_decompress(ctx, true); -static bool f2fs_bio_post_read_required(struct bio *bio) -{ - return bio->bi_private; + f2fs_verify_and_finish_bio(bio, true); } static void f2fs_read_end_io(struct bio *bio) { - struct f2fs_sb_info *sbi = F2FS_P_SB(bio_first_page_all(bio)); + struct f2fs_sb_info *sbi = F2FS_F_SB(bio_first_folio_all(bio)); + struct bio_post_read_ctx *ctx; + bool intask = in_task() && !irqs_disabled(); - if (time_to_inject(sbi, FAULT_READ_IO)) { - f2fs_show_injection_info(sbi, FAULT_READ_IO); + iostat_update_and_unbind_ctx(bio); + ctx = bio->bi_private; + + if (time_to_inject(sbi, FAULT_READ_IO)) bio->bi_status = BLK_STS_IOERR; + + if (bio->bi_status != BLK_STS_OK) { + f2fs_finish_read_bio(bio, intask); + return; } - if (f2fs_bio_post_read_required(bio)) { - struct bio_post_read_ctx *ctx = bio->bi_private; + if (ctx) { + unsigned int enabled_steps = ctx->enabled_steps & + (STEP_DECRYPT | STEP_DECOMPRESS); - bio_post_read_processing(ctx); - return; + /* + * If we have only decompression step between decompression and + * decrypt, we don't need post processing for this. + */ + if (enabled_steps == STEP_DECOMPRESS && + !f2fs_low_mem_mode(sbi)) { + f2fs_handle_step_decompress(ctx, intask); + } else if (enabled_steps) { + INIT_WORK(&ctx->work, f2fs_post_read_work); + queue_work(ctx->sbi->post_read_wq, &ctx->work); + return; + } } - __f2fs_read_end_io(bio, false, false); + f2fs_verify_and_finish_bio(bio, intask); } static void f2fs_write_end_io(struct bio *bio) { - struct f2fs_sb_info *sbi = bio->bi_private; - struct bio_vec *bvec; - struct bvec_iter_all iter_all; + struct f2fs_sb_info *sbi; + struct folio_iter fi; + + iostat_update_and_unbind_ctx(bio); + sbi = bio->bi_private; - if (time_to_inject(sbi, FAULT_WRITE_IO)) { - f2fs_show_injection_info(sbi, FAULT_WRITE_IO); + if (time_to_inject(sbi, FAULT_WRITE_IO)) bio->bi_status = BLK_STS_IOERR; - } - bio_for_each_segment_all(bvec, bio, iter_all) { - struct page *page = bvec->bv_page; - enum count_type type = WB_DATA_TYPE(page); + bio_for_each_folio_all(fi, bio) { + struct folio *folio = fi.folio; + enum count_type type; - if (IS_DUMMY_WRITTEN_PAGE(page)) { - set_page_private(page, (unsigned long)NULL); - ClearPagePrivate(page); - unlock_page(page); - mempool_free(page, sbi->write_io_dummy); + if (fscrypt_is_bounce_folio(folio)) { + struct folio *io_folio = folio; - if (unlikely(bio->bi_status)) - f2fs_stop_checkpoint(sbi, true); - continue; + folio = fscrypt_pagecache_folio(io_folio); + fscrypt_free_bounce_page(&io_folio->page); } - fscrypt_finalize_bounce_page(&page); - #ifdef CONFIG_F2FS_FS_COMPRESSION - if (f2fs_is_compressed_page(page)) { - f2fs_compress_write_end_io(bio, page); + if (f2fs_is_compressed_page(folio)) { + f2fs_compress_write_end_io(bio, folio); continue; } #endif - if (unlikely(bio->bi_status)) { - mapping_set_error(page->mapping, -EIO); + type = WB_DATA_TYPE(folio, false); + + if (unlikely(bio->bi_status != BLK_STS_OK)) { + mapping_set_error(folio->mapping, -EIO); if (type == F2FS_WB_CP_DATA) - f2fs_stop_checkpoint(sbi, true); + f2fs_stop_checkpoint(sbi, true, + STOP_CP_REASON_WRITE_FAIL); } - f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && - page->index != nid_of_node(page)); + f2fs_bug_on(sbi, is_node_folio(folio) && + folio->index != nid_of_node(folio)); dec_page_count(sbi, type); - if (f2fs_in_warm_node_list(sbi, page)) - f2fs_del_fsync_node_entry(sbi, page); - clear_cold_data(page); - end_page_writeback(page); + if (f2fs_in_warm_node_list(sbi, folio)) + f2fs_del_fsync_node_entry(sbi, folio); + folio_clear_f2fs_gcing(folio); + folio_end_writeback(folio); } if (!get_pages(sbi, F2FS_WB_CP_DATA) && wq_has_sleeper(&sbi->cp_wait)) @@ -390,8 +368,19 @@ static void f2fs_write_end_io(struct bio *bio) bio_put(bio); } +#ifdef CONFIG_BLK_DEV_ZONED +static void f2fs_zone_write_end_io(struct bio *bio) +{ + struct f2fs_bio_info *io = (struct f2fs_bio_info *)bio->bi_private; + + bio->bi_private = io->bi_private; + complete(&io->zone_wait); + f2fs_write_end_io(bio); +} +#endif + struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, - block_t blk_addr, struct bio *bio) + block_t blk_addr, sector_t *sector) { struct block_device *bdev = sbi->sb->s_bdev; int i; @@ -406,10 +395,9 @@ struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, } } } - if (bio) { - bio_set_dev(bio, bdev); - bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); - } + + if (sector) + *sector = SECTOR_FROM_BLOCK(blk_addr); return bdev; } @@ -426,24 +414,54 @@ int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) return 0; } -/* - * Return true, if pre_bio's bdev is same as its target device. - */ -static bool __same_bdev(struct f2fs_sb_info *sbi, - block_t blk_addr, struct bio *bio) +static blk_opf_t f2fs_io_flags(struct f2fs_io_info *fio) { - struct block_device *b = f2fs_target_device(sbi, blk_addr, NULL); - return bio->bi_disk == b->bd_disk && bio->bi_partno == b->bd_partno; + unsigned int temp_mask = GENMASK(NR_TEMP_TYPE - 1, 0); + unsigned int fua_flag, meta_flag, io_flag; + blk_opf_t op_flags = 0; + + if (fio->op != REQ_OP_WRITE) + return 0; + if (fio->type == DATA) + io_flag = fio->sbi->data_io_flag; + else if (fio->type == NODE) + io_flag = fio->sbi->node_io_flag; + else + return 0; + + fua_flag = io_flag & temp_mask; + meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask; + + /* + * data/node io flag bits per temp: + * REQ_META | REQ_FUA | + * 5 | 4 | 3 | 2 | 1 | 0 | + * Cold | Warm | Hot | Cold | Warm | Hot | + */ + if (BIT(fio->temp) & meta_flag) + op_flags |= REQ_META; + if (BIT(fio->temp) & fua_flag) + op_flags |= REQ_FUA; + + if (fio->type == DATA && + F2FS_I(fio->folio->mapping->host)->ioprio_hint == F2FS_IOPRIO_WRITE) + op_flags |= REQ_PRIO; + + return op_flags; } static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) { struct f2fs_sb_info *sbi = fio->sbi; + struct block_device *bdev; + sector_t sector; struct bio *bio; - bio = f2fs_bio_alloc(sbi, npages, true); - - f2fs_target_device(sbi, fio->new_blkaddr, bio); + bdev = f2fs_target_device(sbi, fio->new_blkaddr, §or); + bio = bio_alloc_bioset(bdev, npages, + fio->op | fio->op_flags | f2fs_io_flags(fio), + GFP_NOIO, &f2fs_bioset); + bio->bi_iter.bi_sector = sector; if (is_read_io(fio->op)) { bio->bi_end_io = f2fs_read_end_io; bio->bi_private = NULL; @@ -453,94 +471,58 @@ static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi, fio->type, fio->temp); } + iostat_alloc_and_bind_ctx(sbi, bio, NULL); + if (fio->io_wbc) wbc_init_bio(fio->io_wbc, bio); return bio; } -static inline void __submit_bio(struct f2fs_sb_info *sbi, - struct bio *bio, enum page_type type) +static void f2fs_set_bio_crypt_ctx(struct bio *bio, const struct inode *inode, + pgoff_t first_idx, + const struct f2fs_io_info *fio, + gfp_t gfp_mask) { - if (!is_read_io(bio_op(bio))) { - unsigned int start; - - if (type != DATA && type != NODE) - goto submit_io; - - if (f2fs_lfs_mode(sbi) && current->plug) - blk_finish_plug(current->plug); - - if (F2FS_IO_ALIGNED(sbi)) - goto submit_io; - - start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS; - start %= F2FS_IO_SIZE(sbi); - - if (start == 0) - goto submit_io; - - /* fill dummy pages */ - for (; start < F2FS_IO_SIZE(sbi); start++) { - struct page *page = - mempool_alloc(sbi->write_io_dummy, - GFP_NOIO | __GFP_NOFAIL); - f2fs_bug_on(sbi, !page); - - zero_user_segment(page, 0, PAGE_SIZE); - SetPagePrivate(page); - set_page_private(page, (unsigned long)DUMMY_WRITTEN_PAGE); - lock_page(page); - if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) - f2fs_bug_on(sbi, 1); - } - /* - * In the NODE case, we lose next block address chain. So, we - * need to do checkpoint in f2fs_sync_file. - */ - if (type == NODE) - set_sbi_flag(sbi, SBI_NEED_CP); - } -submit_io: - if (is_read_io(bio_op(bio))) - trace_f2fs_submit_read_bio(sbi->sb, type, bio); - else - trace_f2fs_submit_write_bio(sbi->sb, type, bio); - submit_bio(bio); + /* + * The f2fs garbage collector sets ->encrypted_page when it wants to + * read/write raw data without encryption. + */ + if (!fio || !fio->encrypted_page) + fscrypt_set_bio_crypt_ctx(bio, inode, first_idx, gfp_mask); } -void f2fs_submit_bio(struct f2fs_sb_info *sbi, - struct bio *bio, enum page_type type) +static bool f2fs_crypt_mergeable_bio(struct bio *bio, const struct inode *inode, + pgoff_t next_idx, + const struct f2fs_io_info *fio) { - __submit_bio(sbi, bio, type); + /* + * The f2fs garbage collector sets ->encrypted_page when it wants to + * read/write raw data without encryption. + */ + if (fio && fio->encrypted_page) + return !bio_has_crypt_ctx(bio); + + return fscrypt_mergeable_bio(bio, inode, next_idx); } -static void __attach_io_flag(struct f2fs_io_info *fio) +void f2fs_submit_read_bio(struct f2fs_sb_info *sbi, struct bio *bio, + enum page_type type) { - struct f2fs_sb_info *sbi = fio->sbi; - unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1; - unsigned int io_flag, fua_flag, meta_flag; + WARN_ON_ONCE(!is_read_io(bio_op(bio))); + trace_f2fs_submit_read_bio(sbi->sb, type, bio); - if (fio->type == DATA) - io_flag = sbi->data_io_flag; - else if (fio->type == NODE) - io_flag = sbi->node_io_flag; - else - return; - - fua_flag = io_flag & temp_mask; - meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask; + iostat_update_submit_ctx(bio, type); + submit_bio(bio); +} - /* - * data/node io flag bits per temp: - * REQ_META | REQ_FUA | - * 5 | 4 | 3 | 2 | 1 | 0 | - * Cold | Warm | Hot | Cold | Warm | Hot | - */ - if ((1 << fio->temp) & meta_flag) - fio->op_flags |= REQ_META; - if ((1 << fio->temp) & fua_flag) - fio->op_flags |= REQ_FUA; +static void f2fs_submit_write_bio(struct f2fs_sb_info *sbi, struct bio *bio, + enum page_type type) +{ + WARN_ON_ONCE(is_read_io(bio_op(bio))); + trace_f2fs_submit_write_bio(sbi->sb, type, bio); + iostat_update_submit_ctx(bio, type); + submit_bio(bio); } static void __submit_merged_bio(struct f2fs_bio_info *io) @@ -550,47 +532,44 @@ static void __submit_merged_bio(struct f2fs_bio_info *io) if (!io->bio) return; - __attach_io_flag(fio); - bio_set_op_attrs(io->bio, fio->op, fio->op_flags); - - if (is_read_io(fio->op)) + if (is_read_io(fio->op)) { trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio); - else + f2fs_submit_read_bio(io->sbi, io->bio, fio->type); + } else { trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio); - - __submit_bio(io->sbi, io->bio, fio->type); + f2fs_submit_write_bio(io->sbi, io->bio, fio->type); + } io->bio = NULL; } static bool __has_merged_page(struct bio *bio, struct inode *inode, - struct page *page, nid_t ino) + struct folio *folio, nid_t ino) { - struct bio_vec *bvec; - struct bvec_iter_all iter_all; + struct folio_iter fi; if (!bio) return false; - if (!inode && !page && !ino) + if (!inode && !folio && !ino) return true; - bio_for_each_segment_all(bvec, bio, iter_all) { - struct page *target = bvec->bv_page; + bio_for_each_folio_all(fi, bio) { + struct folio *target = fi.folio; - if (fscrypt_is_bounce_page(target)) { - target = fscrypt_pagecache_page(target); + if (fscrypt_is_bounce_folio(target)) { + target = fscrypt_pagecache_folio(target); if (IS_ERR(target)) continue; } if (f2fs_is_compressed_page(target)) { - target = f2fs_compress_control_page(target); + target = f2fs_compress_control_folio(target); if (IS_ERR(target)) continue; } if (inode && inode == target->mapping->host) return true; - if (page && page == target) + if (folio && folio == target) return true; if (ino && ino == ino_of_node(target)) return true; @@ -599,28 +578,67 @@ static bool __has_merged_page(struct bio *bio, struct inode *inode, return false; } +int f2fs_init_write_merge_io(struct f2fs_sb_info *sbi) +{ + int i; + + for (i = 0; i < NR_PAGE_TYPE; i++) { + int n = (i == META) ? 1 : NR_TEMP_TYPE; + int j; + + sbi->write_io[i] = f2fs_kmalloc(sbi, + array_size(n, sizeof(struct f2fs_bio_info)), + GFP_KERNEL); + if (!sbi->write_io[i]) + return -ENOMEM; + + for (j = HOT; j < n; j++) { + struct f2fs_bio_info *io = &sbi->write_io[i][j]; + + init_f2fs_rwsem(&io->io_rwsem); + io->sbi = sbi; + io->bio = NULL; + io->last_block_in_bio = 0; + spin_lock_init(&io->io_lock); + INIT_LIST_HEAD(&io->io_list); + INIT_LIST_HEAD(&io->bio_list); + init_f2fs_rwsem(&io->bio_list_lock); +#ifdef CONFIG_BLK_DEV_ZONED + init_completion(&io->zone_wait); + io->zone_pending_bio = NULL; + io->bi_private = NULL; +#endif + } + } + + return 0; +} + static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type, enum temp_type temp) { enum page_type btype = PAGE_TYPE_OF_BIO(type); struct f2fs_bio_info *io = sbi->write_io[btype] + temp; - down_write(&io->io_rwsem); + f2fs_down_write(&io->io_rwsem); + + if (!io->bio) + goto unlock_out; /* change META to META_FLUSH in the checkpoint procedure */ if (type >= META_FLUSH) { io->fio.type = META_FLUSH; - io->fio.op = REQ_OP_WRITE; - io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC; + io->bio->bi_opf |= REQ_META | REQ_PRIO | REQ_SYNC; if (!test_opt(sbi, NOBARRIER)) - io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA; + io->bio->bi_opf |= REQ_PREFLUSH | REQ_FUA; } __submit_merged_bio(io); - up_write(&io->io_rwsem); +unlock_out: + f2fs_up_write(&io->io_rwsem); } static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, - struct inode *inode, struct page *page, + struct inode *inode, struct folio *folio, nid_t ino, enum page_type type, bool force) { enum temp_type temp; @@ -631,9 +649,9 @@ static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, enum page_type btype = PAGE_TYPE_OF_BIO(type); struct f2fs_bio_info *io = sbi->write_io[btype] + temp; - down_read(&io->io_rwsem); - ret = __has_merged_page(io->bio, inode, page, ino); - up_read(&io->io_rwsem); + f2fs_down_read(&io->io_rwsem); + ret = __has_merged_page(io->bio, inode, folio, ino); + f2fs_up_read(&io->io_rwsem); } if (ret) __f2fs_submit_merged_write(sbi, type, temp); @@ -650,10 +668,10 @@ void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) } void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, - struct inode *inode, struct page *page, + struct inode *inode, struct folio *folio, nid_t ino, enum page_type type) { - __submit_merged_write_cond(sbi, inode, page, ino, type, false); + __submit_merged_write_cond(sbi, inode, folio, ino, type, false); } void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) @@ -670,52 +688,56 @@ void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) int f2fs_submit_page_bio(struct f2fs_io_info *fio) { struct bio *bio; - struct page *page = fio->encrypted_page ? - fio->encrypted_page : fio->page; + struct folio *fio_folio = fio->folio; + struct folio *data_folio = fio->encrypted_page ? + page_folio(fio->encrypted_page) : fio_folio; if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, fio->is_por ? META_POR : (__is_meta_io(fio) ? META_GENERIC : DATA_GENERIC_ENHANCE))) return -EFSCORRUPTED; - trace_f2fs_submit_page_bio(page, fio); - f2fs_trace_ios(fio, 0); + trace_f2fs_submit_folio_bio(data_folio, fio); /* Allocate a new bio */ bio = __bio_alloc(fio, 1); - if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { - bio_put(bio); - return -EFAULT; - } + f2fs_set_bio_crypt_ctx(bio, fio_folio->mapping->host, + fio_folio->index, fio, GFP_NOIO); + bio_add_folio_nofail(bio, data_folio, folio_size(data_folio), 0); if (fio->io_wbc && !is_read_io(fio->op)) - wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); - - __attach_io_flag(fio); - bio_set_op_attrs(bio, fio->op, fio->op_flags); + wbc_account_cgroup_owner(fio->io_wbc, fio_folio, PAGE_SIZE); inc_page_count(fio->sbi, is_read_io(fio->op) ? - __read_io_type(page): WB_DATA_TYPE(fio->page)); + __read_io_type(data_folio) : WB_DATA_TYPE(fio->folio, false)); - __submit_bio(fio->sbi, bio, fio->type); + if (is_read_io(bio_op(bio))) + f2fs_submit_read_bio(fio->sbi, bio, fio->type); + else + f2fs_submit_write_bio(fio->sbi, bio, fio->type); return 0; } static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, block_t last_blkaddr, block_t cur_blkaddr) { + if (unlikely(sbi->max_io_bytes && + bio->bi_iter.bi_size >= sbi->max_io_bytes)) + return false; if (last_blkaddr + 1 != cur_blkaddr) return false; - return __same_bdev(sbi, cur_blkaddr, bio); + return bio->bi_bdev == f2fs_target_device(sbi, cur_blkaddr, NULL); } static bool io_type_is_mergeable(struct f2fs_bio_info *io, struct f2fs_io_info *fio) { + blk_opf_t mask = ~(REQ_PREFLUSH | REQ_FUA); + if (io->fio.op != fio->op) return false; - return io->fio.op_flags == fio->op_flags; + return (io->fio.op_flags & mask) == (fio->op_flags & mask); } static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, @@ -724,37 +746,26 @@ static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, block_t last_blkaddr, block_t cur_blkaddr) { - if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) { - unsigned int filled_blocks = - F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size); - unsigned int io_size = F2FS_IO_SIZE(sbi); - unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt; - - /* IOs in bio is aligned and left space of vectors is not enough */ - if (!(filled_blocks % io_size) && left_vecs < io_size) - return false; - } if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr)) return false; return io_type_is_mergeable(io, fio); } static void add_bio_entry(struct f2fs_sb_info *sbi, struct bio *bio, - struct page *page, enum temp_type temp) + struct folio *folio, enum temp_type temp) { struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; struct bio_entry *be; - be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS); + be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS, true, NULL); be->bio = bio; bio_get(bio); - if (bio_add_page(bio, page, PAGE_SIZE, 0) != PAGE_SIZE) - f2fs_bug_on(sbi, 1); + bio_add_folio_nofail(bio, folio, folio_size(folio), 0); - down_write(&io->bio_list_lock); + f2fs_down_write(&io->bio_list_lock); list_add_tail(&be->list, &io->bio_list); - up_write(&io->bio_list_lock); + f2fs_up_write(&io->bio_list_lock); } static void del_bio_entry(struct bio_entry *be) @@ -763,9 +774,11 @@ static void del_bio_entry(struct bio_entry *be) kmem_cache_free(bio_entry_slab, be); } -static int add_ipu_page(struct f2fs_sb_info *sbi, struct bio **bio, - struct page *page) +static int add_ipu_page(struct f2fs_io_info *fio, struct bio **bio, + struct folio *folio) { + struct folio *fio_folio = fio->folio; + struct f2fs_sb_info *sbi = fio->sbi; enum temp_type temp; bool found = false; int ret = -EAGAIN; @@ -775,25 +788,30 @@ static int add_ipu_page(struct f2fs_sb_info *sbi, struct bio **bio, struct list_head *head = &io->bio_list; struct bio_entry *be; - down_write(&io->bio_list_lock); + f2fs_down_write(&io->bio_list_lock); list_for_each_entry(be, head, list) { if (be->bio != *bio) continue; found = true; - if (bio_add_page(*bio, page, PAGE_SIZE, 0) == - PAGE_SIZE) { + f2fs_bug_on(sbi, !page_is_mergeable(sbi, *bio, + *fio->last_block, + fio->new_blkaddr)); + if (f2fs_crypt_mergeable_bio(*bio, + fio_folio->mapping->host, + fio_folio->index, fio) && + bio_add_folio(*bio, folio, folio_size(folio), 0)) { ret = 0; break; } - /* bio is full */ + /* page can't be merged into bio; submit the bio */ del_bio_entry(be); - __submit_bio(sbi, *bio, DATA); + f2fs_submit_write_bio(sbi, *bio, DATA); break; } - up_write(&io->bio_list_lock); + f2fs_up_write(&io->bio_list_lock); } if (ret) { @@ -805,12 +823,14 @@ static int add_ipu_page(struct f2fs_sb_info *sbi, struct bio **bio, } void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, - struct bio **bio, struct page *page) + struct bio **bio, struct folio *folio) { enum temp_type temp; bool found = false; struct bio *target = bio ? *bio : NULL; + f2fs_bug_on(sbi, !target && !folio); + for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; struct list_head *head = &io->bio_list; @@ -819,41 +839,41 @@ void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, if (list_empty(head)) continue; - down_read(&io->bio_list_lock); + f2fs_down_read(&io->bio_list_lock); list_for_each_entry(be, head, list) { if (target) found = (target == be->bio); else found = __has_merged_page(be->bio, NULL, - page, 0); + folio, 0); if (found) break; } - up_read(&io->bio_list_lock); + f2fs_up_read(&io->bio_list_lock); if (!found) continue; found = false; - down_write(&io->bio_list_lock); + f2fs_down_write(&io->bio_list_lock); list_for_each_entry(be, head, list) { if (target) found = (target == be->bio); else found = __has_merged_page(be->bio, NULL, - page, 0); + folio, 0); if (found) { target = be->bio; del_bio_entry(be); break; } } - up_write(&io->bio_list_lock); + f2fs_up_write(&io->bio_list_lock); } if (found) - __submit_bio(sbi, target, DATA); + f2fs_submit_write_bio(sbi, target, DATA); if (bio && *bio) { bio_put(*bio); *bio = NULL; @@ -863,35 +883,35 @@ void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, int f2fs_merge_page_bio(struct f2fs_io_info *fio) { struct bio *bio = *fio->bio; - struct page *page = fio->encrypted_page ? - fio->encrypted_page : fio->page; + struct folio *data_folio = fio->encrypted_page ? + page_folio(fio->encrypted_page) : fio->folio; + struct folio *folio = fio->folio; if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) return -EFSCORRUPTED; - trace_f2fs_submit_page_bio(page, fio); - f2fs_trace_ios(fio, 0); + trace_f2fs_submit_folio_bio(data_folio, fio); if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block, fio->new_blkaddr)) f2fs_submit_merged_ipu_write(fio->sbi, &bio, NULL); alloc_new: if (!bio) { - bio = __bio_alloc(fio, BIO_MAX_PAGES); - __attach_io_flag(fio); - bio_set_op_attrs(bio, fio->op, fio->op_flags); + bio = __bio_alloc(fio, BIO_MAX_VECS); + f2fs_set_bio_crypt_ctx(bio, folio->mapping->host, + folio->index, fio, GFP_NOIO); - add_bio_entry(fio->sbi, bio, page, fio->temp); + add_bio_entry(fio->sbi, bio, data_folio, fio->temp); } else { - if (add_ipu_page(fio->sbi, &bio, page)) + if (add_ipu_page(fio, &bio, data_folio)) goto alloc_new; } if (fio->io_wbc) - wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); + wbc_account_cgroup_owner(fio->io_wbc, folio, folio_size(folio)); - inc_page_count(fio->sbi, WB_DATA_TYPE(page)); + inc_page_count(fio->sbi, WB_DATA_TYPE(folio, false)); *fio->last_block = fio->new_blkaddr; *fio->bio = bio; @@ -899,17 +919,49 @@ alloc_new: return 0; } +#ifdef CONFIG_BLK_DEV_ZONED +static bool is_end_zone_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr) +{ + struct block_device *bdev = sbi->sb->s_bdev; + int devi = 0; + + if (f2fs_is_multi_device(sbi)) { + devi = f2fs_target_device_index(sbi, blkaddr); + if (blkaddr < FDEV(devi).start_blk || + blkaddr > FDEV(devi).end_blk) { + f2fs_err(sbi, "Invalid block %x", blkaddr); + return false; + } + blkaddr -= FDEV(devi).start_blk; + bdev = FDEV(devi).bdev; + } + return bdev_is_zoned(bdev) && + f2fs_blkz_is_seq(sbi, devi, blkaddr) && + (blkaddr % sbi->blocks_per_blkz == sbi->blocks_per_blkz - 1); +} +#endif + void f2fs_submit_page_write(struct f2fs_io_info *fio) { struct f2fs_sb_info *sbi = fio->sbi; enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; - struct page *bio_page; + struct folio *bio_folio; + enum count_type type; f2fs_bug_on(sbi, is_read_io(fio->op)); - down_write(&io->io_rwsem); + f2fs_down_write(&io->io_rwsem); next: +#ifdef CONFIG_BLK_DEV_ZONED + if (f2fs_sb_has_blkzoned(sbi) && btype < META && io->zone_pending_bio) { + wait_for_completion_io(&io->zone_wait); + bio_put(io->zone_pending_bio); + io->zone_pending_bio = NULL; + io->bi_private = NULL; + } +#endif + if (fio->in_list) { spin_lock(&io->io_lock); if (list_empty(&io->io_list)) { @@ -925,162 +977,159 @@ next: verify_fio_blkaddr(fio); if (fio->encrypted_page) - bio_page = fio->encrypted_page; + bio_folio = page_folio(fio->encrypted_page); else if (fio->compressed_page) - bio_page = fio->compressed_page; + bio_folio = page_folio(fio->compressed_page); else - bio_page = fio->page; + bio_folio = fio->folio; /* set submitted = true as a return value */ - fio->submitted = true; + fio->submitted = 1; - inc_page_count(sbi, WB_DATA_TYPE(bio_page)); + type = WB_DATA_TYPE(bio_folio, fio->compressed_page); + inc_page_count(sbi, type); - if (io->bio && !io_is_mergeable(sbi, io->bio, io, fio, - io->last_block_in_bio, fio->new_blkaddr)) + if (io->bio && + (!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio, + fio->new_blkaddr) || + !f2fs_crypt_mergeable_bio(io->bio, fio_inode(fio), + bio_folio->index, fio))) __submit_merged_bio(io); alloc_new: if (io->bio == NULL) { - if (F2FS_IO_ALIGNED(sbi) && - (fio->type == DATA || fio->type == NODE) && - fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { - dec_page_count(sbi, WB_DATA_TYPE(bio_page)); - fio->retry = true; - goto skip; - } - io->bio = __bio_alloc(fio, BIO_MAX_PAGES); + io->bio = __bio_alloc(fio, BIO_MAX_VECS); + f2fs_set_bio_crypt_ctx(io->bio, fio_inode(fio), + bio_folio->index, fio, GFP_NOIO); io->fio = *fio; } - if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { + if (!bio_add_folio(io->bio, bio_folio, folio_size(bio_folio), 0)) { __submit_merged_bio(io); goto alloc_new; } if (fio->io_wbc) - wbc_account_cgroup_owner(fio->io_wbc, bio_page, PAGE_SIZE); + wbc_account_cgroup_owner(fio->io_wbc, fio->folio, + folio_size(fio->folio)); io->last_block_in_bio = fio->new_blkaddr; - f2fs_trace_ios(fio, 0); - trace_f2fs_submit_page_write(fio->page, fio); -skip: + trace_f2fs_submit_folio_write(fio->folio, fio); +#ifdef CONFIG_BLK_DEV_ZONED + if (f2fs_sb_has_blkzoned(sbi) && btype < META && + is_end_zone_blkaddr(sbi, fio->new_blkaddr)) { + bio_get(io->bio); + reinit_completion(&io->zone_wait); + io->bi_private = io->bio->bi_private; + io->bio->bi_private = io; + io->bio->bi_end_io = f2fs_zone_write_end_io; + io->zone_pending_bio = io->bio; + __submit_merged_bio(io); + } +#endif if (fio->in_list) goto next; out: if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || !f2fs_is_checkpoint_ready(sbi)) __submit_merged_bio(io); - up_write(&io->io_rwsem); -} - -static inline bool f2fs_need_verity(const struct inode *inode, pgoff_t idx) -{ - return fsverity_active(inode) && - idx < DIV_ROUND_UP(inode->i_size, PAGE_SIZE); + f2fs_up_write(&io->io_rwsem); } static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, - unsigned nr_pages, unsigned op_flag, + unsigned nr_pages, blk_opf_t op_flag, pgoff_t first_idx, bool for_write) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct bio *bio; - struct bio_post_read_ctx *ctx; + struct bio_post_read_ctx *ctx = NULL; unsigned int post_read_steps = 0; - - bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), - for_write); - if (!bio) - return ERR_PTR(-ENOMEM); - f2fs_target_device(sbi, blkaddr, bio); + sector_t sector; + struct block_device *bdev = f2fs_target_device(sbi, blkaddr, §or); + + bio = bio_alloc_bioset(bdev, bio_max_segs(nr_pages), + REQ_OP_READ | op_flag, + for_write ? GFP_NOIO : GFP_KERNEL, &f2fs_bioset); + bio->bi_iter.bi_sector = sector; + f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS); bio->bi_end_io = f2fs_read_end_io; - bio_set_op_attrs(bio, REQ_OP_READ, op_flag); - if (f2fs_encrypted_file(inode)) - post_read_steps |= 1 << STEP_DECRYPT; - if (f2fs_compressed_file(inode)) - post_read_steps |= 1 << STEP_DECOMPRESS_NOWQ; + if (fscrypt_inode_uses_fs_layer_crypto(inode)) + post_read_steps |= STEP_DECRYPT; + if (f2fs_need_verity(inode, first_idx)) - post_read_steps |= 1 << STEP_VERITY; + post_read_steps |= STEP_VERITY; - if (post_read_steps) { + /* + * STEP_DECOMPRESS is handled specially, since a compressed file might + * contain both compressed and uncompressed clusters. We'll allocate a + * bio_post_read_ctx if the file is compressed, but the caller is + * responsible for enabling STEP_DECOMPRESS if it's actually needed. + */ + + if (post_read_steps || f2fs_compressed_file(inode)) { /* Due to the mempool, this never fails. */ ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); ctx->bio = bio; ctx->sbi = sbi; ctx->enabled_steps = post_read_steps; + ctx->fs_blkaddr = blkaddr; + ctx->decompression_attempted = false; bio->bi_private = ctx; } + iostat_alloc_and_bind_ctx(sbi, bio, ctx); return bio; } -static void f2fs_release_read_bio(struct bio *bio) -{ - if (bio->bi_private) - mempool_free(bio->bi_private, bio_post_read_ctx_pool); - bio_put(bio); -} - /* This can handle encryption stuffs */ -static int f2fs_submit_page_read(struct inode *inode, struct page *page, - block_t blkaddr, bool for_write) +static void f2fs_submit_page_read(struct inode *inode, struct folio *folio, + block_t blkaddr, blk_opf_t op_flags, + bool for_write) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct bio *bio; - bio = f2fs_grab_read_bio(inode, blkaddr, 1, 0, page->index, for_write); - if (IS_ERR(bio)) - return PTR_ERR(bio); + bio = f2fs_grab_read_bio(inode, blkaddr, 1, op_flags, + folio->index, for_write); /* wait for GCed page writeback via META_MAPPING */ f2fs_wait_on_block_writeback(inode, blkaddr); - if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { - bio_put(bio); - return -EFAULT; - } - ClearPageError(page); + if (!bio_add_folio(bio, folio, PAGE_SIZE, 0)) + f2fs_bug_on(sbi, 1); + inc_page_count(sbi, F2FS_RD_DATA); - f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); - __submit_bio(sbi, bio, DATA); - return 0; + f2fs_update_iostat(sbi, NULL, FS_DATA_READ_IO, F2FS_BLKSIZE); + f2fs_submit_read_bio(sbi, bio, DATA); } -static void __set_data_blkaddr(struct dnode_of_data *dn) +static void __set_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) { - struct f2fs_node *rn = F2FS_NODE(dn->node_page); - __le32 *addr_array; - int base = 0; + __le32 *addr = get_dnode_addr(dn->inode, dn->node_folio); - if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) - base = get_extra_isize(dn->inode); - - /* Get physical address of data block */ - addr_array = blkaddr_in_node(rn); - addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); + dn->data_blkaddr = blkaddr; + addr[dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); } /* * Lock ordering for the change of data block address: * ->data_page - * ->node_page + * ->node_folio * update block addresses in the node page */ -void f2fs_set_data_blkaddr(struct dnode_of_data *dn) +void f2fs_set_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) { - f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); - __set_data_blkaddr(dn); - if (set_page_dirty(dn->node_page)) + f2fs_folio_wait_writeback(dn->node_folio, NODE, true, true); + __set_data_blkaddr(dn, blkaddr); + if (folio_mark_dirty(dn->node_folio)) dn->node_changed = true; } void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) { - dn->data_blkaddr = blkaddr; - f2fs_set_data_blkaddr(dn); - f2fs_update_extent_cache(dn); + f2fs_set_data_blkaddr(dn, blkaddr); + f2fs_update_read_extent_cache(dn); } /* dn->ofs_in_node will be returned with up-to-date last block pointer */ @@ -1094,24 +1143,25 @@ int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) return -EPERM; - if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) + err = inc_valid_block_count(sbi, dn->inode, &count, true); + if (unlikely(err)) return err; trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, dn->ofs_in_node, count); - f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); + f2fs_folio_wait_writeback(dn->node_folio, NODE, true, true); for (; count > 0; dn->ofs_in_node++) { block_t blkaddr = f2fs_data_blkaddr(dn); + if (blkaddr == NULL_ADDR) { - dn->data_blkaddr = NEW_ADDR; - __set_data_blkaddr(dn); + __set_data_blkaddr(dn, NEW_ADDR); count--; } } - if (set_page_dirty(dn->node_page)) + if (folio_mark_dirty(dn->node_folio)) dn->node_changed = true; return 0; } @@ -1129,7 +1179,7 @@ int f2fs_reserve_new_block(struct dnode_of_data *dn) int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) { - bool need_put = dn->inode_page ? false : true; + bool need_put = dn->inode_folio ? false : true; int err; err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); @@ -1143,34 +1193,20 @@ int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) return err; } -int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) -{ - struct extent_info ei = {0,0,0}; - struct inode *inode = dn->inode; - - if (f2fs_lookup_extent_cache(inode, index, &ei)) { - dn->data_blkaddr = ei.blk + index - ei.fofs; - return 0; - } - - return f2fs_reserve_block(dn, index); -} - -struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, - int op_flags, bool for_write) +struct folio *f2fs_get_read_data_folio(struct inode *inode, pgoff_t index, + blk_opf_t op_flags, bool for_write, pgoff_t *next_pgofs) { struct address_space *mapping = inode->i_mapping; struct dnode_of_data dn; - struct page *page; - struct extent_info ei = {0,0,0}; + struct folio *folio; int err; - page = f2fs_grab_cache_page(mapping, index, for_write); - if (!page) - return ERR_PTR(-ENOMEM); + folio = f2fs_grab_cache_folio(mapping, index, for_write); + if (IS_ERR(folio)) + return folio; - if (f2fs_lookup_extent_cache(inode, index, &ei)) { - dn.data_blkaddr = ei.blk + index - ei.fofs; + if (f2fs_lookup_read_extent_cache_block(inode, index, + &dn.data_blkaddr)) { if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr, DATA_GENERIC_ENHANCE_READ)) { err = -EFSCORRUPTED; @@ -1181,12 +1217,17 @@ struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, set_new_dnode(&dn, inode, NULL, NULL, 0); err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); - if (err) + if (err) { + if (err == -ENOENT && next_pgofs) + *next_pgofs = f2fs_get_next_page_offset(&dn, index); goto put_err; + } f2fs_put_dnode(&dn); if (unlikely(dn.data_blkaddr == NULL_ADDR)) { err = -ENOENT; + if (next_pgofs) + *next_pgofs = index + 1; goto put_err; } if (dn.data_blkaddr != NEW_ADDR && @@ -1197,59 +1238,62 @@ struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, goto put_err; } got_it: - if (PageUptodate(page)) { - unlock_page(page); - return page; + if (folio_test_uptodate(folio)) { + folio_unlock(folio); + return folio; } /* * A new dentry page is allocated but not able to be written, since its * new inode page couldn't be allocated due to -ENOSPC. * In such the case, its blkaddr can be remained as NEW_ADDR. - * see, f2fs_add_link -> f2fs_get_new_data_page -> + * see, f2fs_add_link -> f2fs_get_new_data_folio -> * f2fs_init_inode_metadata. */ if (dn.data_blkaddr == NEW_ADDR) { - zero_user_segment(page, 0, PAGE_SIZE); - if (!PageUptodate(page)) - SetPageUptodate(page); - unlock_page(page); - return page; + folio_zero_segment(folio, 0, folio_size(folio)); + if (!folio_test_uptodate(folio)) + folio_mark_uptodate(folio); + folio_unlock(folio); + return folio; } - err = f2fs_submit_page_read(inode, page, dn.data_blkaddr, for_write); - if (err) - goto put_err; - return page; + f2fs_submit_page_read(inode, folio, dn.data_blkaddr, + op_flags, for_write); + return folio; put_err: - f2fs_put_page(page, 1); + f2fs_folio_put(folio, true); return ERR_PTR(err); } -struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) +struct folio *f2fs_find_data_folio(struct inode *inode, pgoff_t index, + pgoff_t *next_pgofs) { struct address_space *mapping = inode->i_mapping; - struct page *page; - - page = find_get_page(mapping, index); - if (page && PageUptodate(page)) - return page; - f2fs_put_page(page, 0); - - page = f2fs_get_read_data_page(inode, index, 0, false); - if (IS_ERR(page)) - return page; - - if (PageUptodate(page)) - return page; - - wait_on_page_locked(page); - if (unlikely(!PageUptodate(page))) { - f2fs_put_page(page, 0); + struct folio *folio; + + folio = f2fs_filemap_get_folio(mapping, index, FGP_ACCESSED, 0); + if (IS_ERR(folio)) + goto read; + if (folio_test_uptodate(folio)) + return folio; + f2fs_folio_put(folio, false); + +read: + folio = f2fs_get_read_data_folio(inode, index, 0, false, next_pgofs); + if (IS_ERR(folio)) + return folio; + + if (folio_test_uptodate(folio)) + return folio; + + folio_wait_locked(folio); + if (unlikely(!folio_test_uptodate(folio))) { + f2fs_folio_put(folio, false); return ERR_PTR(-EIO); } - return page; + return folio; } /* @@ -1257,27 +1301,23 @@ struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) * Because, the callers, functions in dir.c and GC, should be able to know * whether this page exists or not. */ -struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, +struct folio *f2fs_get_lock_data_folio(struct inode *inode, pgoff_t index, bool for_write) { struct address_space *mapping = inode->i_mapping; - struct page *page; -repeat: - page = f2fs_get_read_data_page(inode, index, 0, for_write); - if (IS_ERR(page)) - return page; + struct folio *folio; + + folio = f2fs_get_read_data_folio(inode, index, 0, for_write, NULL); + if (IS_ERR(folio)) + return folio; /* wait for read completion */ - lock_page(page); - if (unlikely(page->mapping != mapping)) { - f2fs_put_page(page, 1); - goto repeat; - } - if (unlikely(!PageUptodate(page))) { - f2fs_put_page(page, 1); + folio_lock(folio); + if (unlikely(folio->mapping != mapping || !folio_test_uptodate(folio))) { + f2fs_folio_put(folio, true); return ERR_PTR(-EIO); } - return page; + return folio; } /* @@ -1286,57 +1326,57 @@ repeat: * * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and * f2fs_unlock_op(). - * Note that, ipage is set only by make_empty_dir, and if any error occur, - * ipage should be released by this function. + * Note that, ifolio is set only by make_empty_dir, and if any error occur, + * ifolio should be released by this function. */ -struct page *f2fs_get_new_data_page(struct inode *inode, - struct page *ipage, pgoff_t index, bool new_i_size) +struct folio *f2fs_get_new_data_folio(struct inode *inode, + struct folio *ifolio, pgoff_t index, bool new_i_size) { struct address_space *mapping = inode->i_mapping; - struct page *page; + struct folio *folio; struct dnode_of_data dn; int err; - page = f2fs_grab_cache_page(mapping, index, true); - if (!page) { + folio = f2fs_grab_cache_folio(mapping, index, true); + if (IS_ERR(folio)) { /* - * before exiting, we should make sure ipage will be released + * before exiting, we should make sure ifolio will be released * if any error occur. */ - f2fs_put_page(ipage, 1); + f2fs_folio_put(ifolio, true); return ERR_PTR(-ENOMEM); } - set_new_dnode(&dn, inode, ipage, NULL, 0); + set_new_dnode(&dn, inode, ifolio, NULL, 0); err = f2fs_reserve_block(&dn, index); if (err) { - f2fs_put_page(page, 1); + f2fs_folio_put(folio, true); return ERR_PTR(err); } - if (!ipage) + if (!ifolio) f2fs_put_dnode(&dn); - if (PageUptodate(page)) + if (folio_test_uptodate(folio)) goto got_it; if (dn.data_blkaddr == NEW_ADDR) { - zero_user_segment(page, 0, PAGE_SIZE); - if (!PageUptodate(page)) - SetPageUptodate(page); + folio_zero_segment(folio, 0, folio_size(folio)); + if (!folio_test_uptodate(folio)) + folio_mark_uptodate(folio); } else { - f2fs_put_page(page, 1); + f2fs_folio_put(folio, true); - /* if ipage exists, blkaddr should be NEW_ADDR */ - f2fs_bug_on(F2FS_I_SB(inode), ipage); - page = f2fs_get_lock_data_page(inode, index, true); - if (IS_ERR(page)) - return page; + /* if ifolio exists, blkaddr should be NEW_ADDR */ + f2fs_bug_on(F2FS_I_SB(inode), ifolio); + folio = f2fs_get_lock_data_folio(inode, index, true); + if (IS_ERR(folio)) + return folio; } got_it: if (new_i_size && i_size_read(inode) < ((loff_t)(index + 1) << PAGE_SHIFT)) f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); - return page; + return folio; } static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) @@ -1351,94 +1391,137 @@ static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) return -EPERM; - err = f2fs_get_node_info(sbi, dn->nid, &ni); + err = f2fs_get_node_info(sbi, dn->nid, &ni, false); if (err) return err; dn->data_blkaddr = f2fs_data_blkaddr(dn); - if (dn->data_blkaddr != NULL_ADDR) - goto alloc; - - if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) - return err; + if (dn->data_blkaddr == NULL_ADDR) { + err = inc_valid_block_count(sbi, dn->inode, &count, true); + if (unlikely(err)) + return err; + } -alloc: set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); old_blkaddr = dn->data_blkaddr; - f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, - &sum, seg_type, NULL, false); + err = f2fs_allocate_data_block(sbi, NULL, old_blkaddr, + &dn->data_blkaddr, &sum, seg_type, NULL); + if (err) + return err; + if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) - invalidate_mapping_pages(META_MAPPING(sbi), - old_blkaddr, old_blkaddr); + f2fs_invalidate_internal_cache(sbi, old_blkaddr, 1); + f2fs_update_data_blkaddr(dn, dn->data_blkaddr); + return 0; +} + +static void f2fs_map_lock(struct f2fs_sb_info *sbi, int flag) +{ + f2fs_down_read(&sbi->cp_enable_rwsem); + if (flag == F2FS_GET_BLOCK_PRE_AIO) + f2fs_down_read(&sbi->node_change); + else + f2fs_lock_op(sbi); +} + +static void f2fs_map_unlock(struct f2fs_sb_info *sbi, int flag) +{ + if (flag == F2FS_GET_BLOCK_PRE_AIO) + f2fs_up_read(&sbi->node_change); + else + f2fs_unlock_op(sbi); + f2fs_up_read(&sbi->cp_enable_rwsem); +} + +int f2fs_get_block_locked(struct dnode_of_data *dn, pgoff_t index) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); + int err = 0; + + f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO); + if (!f2fs_lookup_read_extent_cache_block(dn->inode, index, + &dn->data_blkaddr)) + err = f2fs_reserve_block(dn, index); + f2fs_map_unlock(sbi, F2FS_GET_BLOCK_PRE_AIO); + + return err; +} + +static int f2fs_map_no_dnode(struct inode *inode, + struct f2fs_map_blocks *map, struct dnode_of_data *dn, + pgoff_t pgoff) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); /* - * i_size will be updated by direct_IO. Otherwise, we'll get stale - * data from unwritten block via dio_read. + * There is one exceptional case that read_node_page() may return + * -ENOENT due to filesystem has been shutdown or cp_error, return + * -EIO in that case. */ + if (map->m_may_create && + (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || f2fs_cp_error(sbi))) + return -EIO; + + if (map->m_next_pgofs) + *map->m_next_pgofs = f2fs_get_next_page_offset(dn, pgoff); + if (map->m_next_extent) + *map->m_next_extent = f2fs_get_next_page_offset(dn, pgoff); return 0; } -int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from) +static bool f2fs_map_blocks_cached(struct inode *inode, + struct f2fs_map_blocks *map, int flag) { - struct inode *inode = file_inode(iocb->ki_filp); - struct f2fs_map_blocks map; - int flag; - int err = 0; - bool direct_io = iocb->ki_flags & IOCB_DIRECT; + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + unsigned int maxblocks = map->m_len; + pgoff_t pgoff = (pgoff_t)map->m_lblk; + struct extent_info ei = {}; - map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos); - map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from)); - if (map.m_len > map.m_lblk) - map.m_len -= map.m_lblk; - else - map.m_len = 0; + if (!f2fs_lookup_read_extent_cache(inode, pgoff, &ei)) + return false; - map.m_next_pgofs = NULL; - map.m_next_extent = NULL; - map.m_seg_type = NO_CHECK_TYPE; - map.m_may_create = true; + map->m_pblk = ei.blk + pgoff - ei.fofs; + map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgoff); + map->m_flags = F2FS_MAP_MAPPED; + if (map->m_next_extent) + *map->m_next_extent = pgoff + map->m_len; - if (direct_io) { - map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint); - flag = f2fs_force_buffered_io(inode, iocb, from) ? - F2FS_GET_BLOCK_PRE_AIO : - F2FS_GET_BLOCK_PRE_DIO; - goto map_blocks; - } - if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) { - err = f2fs_convert_inline_inode(inode); - if (err) - return err; - } - if (f2fs_has_inline_data(inode)) - return err; + /* for hardware encryption, but to avoid potential issue in future */ + if (flag == F2FS_GET_BLOCK_DIO) + f2fs_wait_on_block_writeback_range(inode, + map->m_pblk, map->m_len); - flag = F2FS_GET_BLOCK_PRE_AIO; + if (f2fs_allow_multi_device_dio(sbi, flag)) { + int bidx = f2fs_target_device_index(sbi, map->m_pblk); + struct f2fs_dev_info *dev = &sbi->devs[bidx]; -map_blocks: - err = f2fs_map_blocks(inode, &map, 1, flag); - if (map.m_len > 0 && err == -ENOSPC) { - if (!direct_io) - set_inode_flag(inode, FI_NO_PREALLOC); - err = 0; + map->m_bdev = dev->bdev; + map->m_len = min(map->m_len, dev->end_blk + 1 - map->m_pblk); + map->m_pblk -= dev->start_blk; + } else { + map->m_bdev = inode->i_sb->s_bdev; } - return err; + return true; } -void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) +static bool map_is_mergeable(struct f2fs_sb_info *sbi, + struct f2fs_map_blocks *map, + block_t blkaddr, int flag, int bidx, + int ofs) { - if (flag == F2FS_GET_BLOCK_PRE_AIO) { - if (lock) - down_read(&sbi->node_change); - else - up_read(&sbi->node_change); - } else { - if (lock) - f2fs_lock_op(sbi); - else - f2fs_unlock_op(sbi); - } + if (map->m_multidev_dio && map->m_bdev != FDEV(bidx).bdev) + return false; + if (map->m_pblk != NEW_ADDR && blkaddr == (map->m_pblk + ofs)) + return true; + if (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) + return true; + if (flag == F2FS_GET_BLOCK_PRE_DIO) + return true; + if (flag == F2FS_GET_BLOCK_DIO && + map->m_pblk == NULL_ADDR && blkaddr == NULL_ADDR) + return true; + return false; } /* @@ -1446,8 +1529,7 @@ void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) * maps continuous logical blocks to physical blocks, and return such * info via f2fs_map_blocks structure. */ -int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, - int create, int flag) +int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag) { unsigned int maxblocks = map->m_len; struct dnode_of_data dn; @@ -1457,13 +1539,25 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int err = 0, ofs = 1; unsigned int ofs_in_node, last_ofs_in_node; blkcnt_t prealloc; - struct extent_info ei = {0,0,0}; block_t blkaddr; unsigned int start_pgofs; + int bidx = 0; + bool is_hole; + bool lfs_dio_write; if (!maxblocks) return 0; + lfs_dio_write = (flag == F2FS_GET_BLOCK_DIO && f2fs_lfs_mode(sbi) && + map->m_may_create); + + if (!map->m_may_create && f2fs_map_blocks_cached(inode, map, flag)) + goto out; + + map->m_bdev = inode->i_sb->s_bdev; + map->m_multidev_dio = + f2fs_allow_multi_device_dio(F2FS_I_SB(inode), flag); + map->m_len = 0; map->m_flags = 0; @@ -1471,27 +1565,15 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, pgofs = (pgoff_t)map->m_lblk; end = pgofs + maxblocks; - if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { - if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && - map->m_may_create) - goto next_dnode; - - map->m_pblk = ei.blk + pgofs - ei.fofs; - map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); - map->m_flags = F2FS_MAP_MAPPED; - if (map->m_next_extent) - *map->m_next_extent = pgofs + map->m_len; - - /* for hardware encryption, but to avoid potential issue in future */ - if (flag == F2FS_GET_BLOCK_DIO) - f2fs_wait_on_block_writeback_range(inode, - map->m_pblk, map->m_len); - goto out; - } + if (flag == F2FS_GET_BLOCK_PRECACHE) + mode = LOOKUP_NODE_RA; next_dnode: - if (map->m_may_create) - __do_map_lock(sbi, flag, true); + if (map->m_may_create) { + if (f2fs_lfs_mode(sbi)) + f2fs_balance_fs(sbi, true); + f2fs_map_lock(sbi, flag); + } /* When reading holes, we need its node page */ set_new_dnode(&dn, inode, NULL, NULL, 0); @@ -1499,105 +1581,121 @@ next_dnode: if (err) { if (flag == F2FS_GET_BLOCK_BMAP) map->m_pblk = 0; - if (err == -ENOENT) { - err = 0; - if (map->m_next_pgofs) - *map->m_next_pgofs = - f2fs_get_next_page_offset(&dn, pgofs); - if (map->m_next_extent) - *map->m_next_extent = - f2fs_get_next_page_offset(&dn, pgofs); - } + if (err == -ENOENT) + err = f2fs_map_no_dnode(inode, map, &dn, pgofs); goto unlock_out; } start_pgofs = pgofs; prealloc = 0; last_ofs_in_node = ofs_in_node = dn.ofs_in_node; - end_offset = ADDRS_PER_PAGE(dn.node_page, inode); + end_offset = ADDRS_PER_PAGE(dn.node_folio, inode); next_block: blkaddr = f2fs_data_blkaddr(&dn); - - if (__is_valid_data_blkaddr(blkaddr) && - !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) { + is_hole = !__is_valid_data_blkaddr(blkaddr); + if (!is_hole && + !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) { err = -EFSCORRUPTED; goto sync_out; } - if (__is_valid_data_blkaddr(blkaddr)) { - /* use out-place-update for driect IO under LFS mode */ - if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && - map->m_may_create) { + /* use out-place-update for direct IO under LFS mode */ + if (map->m_may_create && (is_hole || + (flag == F2FS_GET_BLOCK_DIO && f2fs_lfs_mode(sbi) && + !f2fs_is_pinned_file(inode) && map->m_last_pblk != blkaddr))) { + if (unlikely(f2fs_cp_error(sbi))) { + err = -EIO; + goto sync_out; + } + + switch (flag) { + case F2FS_GET_BLOCK_PRE_AIO: + if (blkaddr == NULL_ADDR) { + prealloc++; + last_ofs_in_node = dn.ofs_in_node; + } + break; + case F2FS_GET_BLOCK_PRE_DIO: + case F2FS_GET_BLOCK_DIO: err = __allocate_data_block(&dn, map->m_seg_type); if (err) goto sync_out; - blkaddr = dn.data_blkaddr; + if (flag == F2FS_GET_BLOCK_PRE_DIO) + file_need_truncate(inode); set_inode_flag(inode, FI_APPEND_WRITE); + break; + default: + WARN_ON_ONCE(1); + err = -EIO; + goto sync_out; } - } else { - if (create) { - if (unlikely(f2fs_cp_error(sbi))) { - err = -EIO; - goto sync_out; - } - if (flag == F2FS_GET_BLOCK_PRE_AIO) { - if (blkaddr == NULL_ADDR) { - prealloc++; - last_ofs_in_node = dn.ofs_in_node; - } - } else { - WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && - flag != F2FS_GET_BLOCK_DIO); - err = __allocate_data_block(&dn, - map->m_seg_type); - if (!err) - set_inode_flag(inode, FI_APPEND_WRITE); - } - if (err) - goto sync_out; + + blkaddr = dn.data_blkaddr; + if (is_hole) map->m_flags |= F2FS_MAP_NEW; - blkaddr = dn.data_blkaddr; - } else { - if (flag == F2FS_GET_BLOCK_BMAP) { - map->m_pblk = 0; - goto sync_out; - } - if (flag == F2FS_GET_BLOCK_PRECACHE) - goto sync_out; - if (flag == F2FS_GET_BLOCK_FIEMAP && - blkaddr == NULL_ADDR) { - if (map->m_next_pgofs) - *map->m_next_pgofs = pgofs + 1; - goto sync_out; - } - if (flag != F2FS_GET_BLOCK_FIEMAP) { - /* for defragment case */ + } else if (is_hole) { + if (f2fs_compressed_file(inode) && + f2fs_sanity_check_cluster(&dn)) { + err = -EFSCORRUPTED; + f2fs_handle_error(sbi, + ERROR_CORRUPTED_CLUSTER); + goto sync_out; + } + + switch (flag) { + case F2FS_GET_BLOCK_PRECACHE: + goto sync_out; + case F2FS_GET_BLOCK_BMAP: + map->m_pblk = 0; + goto sync_out; + case F2FS_GET_BLOCK_FIEMAP: + if (blkaddr == NULL_ADDR) { if (map->m_next_pgofs) *map->m_next_pgofs = pgofs + 1; goto sync_out; } + break; + case F2FS_GET_BLOCK_DIO: + if (map->m_next_pgofs) + *map->m_next_pgofs = pgofs + 1; + break; + default: + /* for defragment case */ + if (map->m_next_pgofs) + *map->m_next_pgofs = pgofs + 1; + goto sync_out; } } if (flag == F2FS_GET_BLOCK_PRE_AIO) goto skip; + if (map->m_multidev_dio) + bidx = f2fs_target_device_index(sbi, blkaddr); + if (map->m_len == 0) { - /* preallocated unwritten block should be mapped for fiemap. */ + /* reserved delalloc block should be mapped for fiemap. */ if (blkaddr == NEW_ADDR) - map->m_flags |= F2FS_MAP_UNWRITTEN; - map->m_flags |= F2FS_MAP_MAPPED; + map->m_flags |= F2FS_MAP_DELALLOC; + /* DIO READ and hole case, should not map the blocks. */ + if (!(flag == F2FS_GET_BLOCK_DIO && is_hole && !map->m_may_create)) + map->m_flags |= F2FS_MAP_MAPPED; map->m_pblk = blkaddr; map->m_len = 1; - } else if ((map->m_pblk != NEW_ADDR && - blkaddr == (map->m_pblk + ofs)) || - (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || - flag == F2FS_GET_BLOCK_PRE_DIO) { + + if (map->m_multidev_dio) + map->m_bdev = FDEV(bidx).bdev; + + if (lfs_dio_write) + map->m_last_pblk = NULL_ADDR; + } else if (map_is_mergeable(sbi, map, blkaddr, flag, bidx, ofs)) { ofs++; map->m_len++; } else { + if (lfs_dio_write && !f2fs_is_pinned_file(inode)) + map->m_last_pblk = blkaddr; goto sync_out; } @@ -1631,7 +1729,7 @@ skip: if (map->m_flags & F2FS_MAP_MAPPED) { unsigned int ofs = start_pgofs - map->m_lblk; - f2fs_update_extent_cache_range(&dn, + f2fs_update_read_extent_cache_range(&dn, start_pgofs, map->m_pblk + ofs, map->m_len - ofs); } @@ -1640,37 +1738,58 @@ skip: f2fs_put_dnode(&dn); if (map->m_may_create) { - __do_map_lock(sbi, flag, false); + f2fs_map_unlock(sbi, flag); f2fs_balance_fs(sbi, dn.node_changed); } goto next_dnode; sync_out: - /* for hardware encryption, but to avoid potential issue in future */ - if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) + if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) { + /* + * for hardware encryption, but to avoid potential issue + * in future + */ f2fs_wait_on_block_writeback_range(inode, map->m_pblk, map->m_len); + if (map->m_multidev_dio) { + block_t blk_addr = map->m_pblk; + + bidx = f2fs_target_device_index(sbi, map->m_pblk); + + map->m_bdev = FDEV(bidx).bdev; + map->m_pblk -= FDEV(bidx).start_blk; + + if (map->m_may_create) + f2fs_update_device_state(sbi, inode->i_ino, + blk_addr, map->m_len); + + f2fs_bug_on(sbi, blk_addr + map->m_len > + FDEV(bidx).end_blk + 1); + } + } + if (flag == F2FS_GET_BLOCK_PRECACHE) { if (map->m_flags & F2FS_MAP_MAPPED) { unsigned int ofs = start_pgofs - map->m_lblk; - f2fs_update_extent_cache_range(&dn, - start_pgofs, map->m_pblk + ofs, - map->m_len - ofs); + if (map->m_len > ofs) + f2fs_update_read_extent_cache_range(&dn, + start_pgofs, map->m_pblk + ofs, + map->m_len - ofs); } if (map->m_next_extent) - *map->m_next_extent = pgofs + 1; + *map->m_next_extent = is_hole ? pgofs + 1 : pgofs; } f2fs_put_dnode(&dn); unlock_out: if (map->m_may_create) { - __do_map_lock(sbi, flag, false); + f2fs_map_unlock(sbi, flag); f2fs_balance_fs(sbi, dn.node_changed); } out: - trace_f2fs_map_blocks(inode, map, err); + trace_f2fs_map_blocks(inode, map, flag, err); return err; } @@ -1692,7 +1811,7 @@ bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) while (map.m_lblk < last_lblk) { map.m_len = last_lblk - map.m_lblk; - err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); + err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT); if (err || map.m_len == 0) return false; map.m_lblk += map.m_len; @@ -1700,83 +1819,10 @@ bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) return true; } -static int __get_data_block(struct inode *inode, sector_t iblock, - struct buffer_head *bh, int create, int flag, - pgoff_t *next_pgofs, int seg_type, bool may_write) -{ - struct f2fs_map_blocks map; - int err; - - map.m_lblk = iblock; - map.m_len = bh->b_size >> inode->i_blkbits; - map.m_next_pgofs = next_pgofs; - map.m_next_extent = NULL; - map.m_seg_type = seg_type; - map.m_may_create = may_write; - - err = f2fs_map_blocks(inode, &map, create, flag); - if (!err) { - map_bh(bh, inode->i_sb, map.m_pblk); - bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags; - bh->b_size = (u64)map.m_len << inode->i_blkbits; - } - return err; -} - -static int get_data_block(struct inode *inode, sector_t iblock, - struct buffer_head *bh_result, int create, int flag, - pgoff_t *next_pgofs) -{ - return __get_data_block(inode, iblock, bh_result, create, - flag, next_pgofs, - NO_CHECK_TYPE, create); -} - -static int get_data_block_dio_write(struct inode *inode, sector_t iblock, - struct buffer_head *bh_result, int create) -{ - return __get_data_block(inode, iblock, bh_result, create, - F2FS_GET_BLOCK_DIO, NULL, - f2fs_rw_hint_to_seg_type(inode->i_write_hint), - IS_SWAPFILE(inode) ? false : true); -} - -static int get_data_block_dio(struct inode *inode, sector_t iblock, - struct buffer_head *bh_result, int create) -{ - return __get_data_block(inode, iblock, bh_result, create, - F2FS_GET_BLOCK_DIO, NULL, - f2fs_rw_hint_to_seg_type(inode->i_write_hint), - false); -} - -static int get_data_block_bmap(struct inode *inode, sector_t iblock, - struct buffer_head *bh_result, int create) -{ - /* Block number less than F2FS MAX BLOCKS */ - if (unlikely(iblock >= F2FS_I_SB(inode)->max_file_blocks)) - return -EFBIG; - - return __get_data_block(inode, iblock, bh_result, create, - F2FS_GET_BLOCK_BMAP, NULL, - NO_CHECK_TYPE, create); -} - -static inline sector_t logical_to_blk(struct inode *inode, loff_t offset) -{ - return (offset >> inode->i_blkbits); -} - -static inline loff_t blk_to_logical(struct inode *inode, sector_t blk) -{ - return (blk << inode->i_blkbits); -} - static int f2fs_xattr_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - struct page *page; struct node_info ni; __u64 phys = 0, len; __u32 flags; @@ -1785,19 +1831,19 @@ static int f2fs_xattr_fiemap(struct inode *inode, if (f2fs_has_inline_xattr(inode)) { int offset; + struct folio *folio = f2fs_grab_cache_folio(NODE_MAPPING(sbi), + inode->i_ino, false); - page = f2fs_grab_cache_page(NODE_MAPPING(sbi), - inode->i_ino, false); - if (!page) - return -ENOMEM; + if (IS_ERR(folio)) + return PTR_ERR(folio); - err = f2fs_get_node_info(sbi, inode->i_ino, &ni); + err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); if (err) { - f2fs_put_page(page, 1); + f2fs_folio_put(folio, true); return err; } - phys = (__u64)blk_to_logical(inode, ni.blk_addr); + phys = F2FS_BLK_TO_BYTES(ni.blk_addr); offset = offsetof(struct f2fs_inode, i_addr) + sizeof(__le32) * (DEF_ADDRS_PER_INODE - get_inline_xattr_addrs(inode)); @@ -1805,7 +1851,7 @@ static int f2fs_xattr_fiemap(struct inode *inode, phys += offset; len = inline_xattr_size(inode); - f2fs_put_page(page, 1); + f2fs_folio_put(folio, true); flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; @@ -1813,65 +1859,53 @@ static int f2fs_xattr_fiemap(struct inode *inode, flags |= FIEMAP_EXTENT_LAST; err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); - if (err || err == 1) + trace_f2fs_fiemap(inode, 0, phys, len, flags, err); + if (err) return err; } if (xnid) { - page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); - if (!page) - return -ENOMEM; + struct folio *folio = f2fs_grab_cache_folio(NODE_MAPPING(sbi), + xnid, false); + + if (IS_ERR(folio)) + return PTR_ERR(folio); - err = f2fs_get_node_info(sbi, xnid, &ni); + err = f2fs_get_node_info(sbi, xnid, &ni, false); if (err) { - f2fs_put_page(page, 1); + f2fs_folio_put(folio, true); return err; } - phys = (__u64)blk_to_logical(inode, ni.blk_addr); + phys = F2FS_BLK_TO_BYTES(ni.blk_addr); len = inode->i_sb->s_blocksize; - f2fs_put_page(page, 1); + f2fs_folio_put(folio, true); flags = FIEMAP_EXTENT_LAST; } - if (phys) + if (phys) { err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); + trace_f2fs_fiemap(inode, 0, phys, len, flags, err); + } return (err < 0 ? err : 0); } -static loff_t max_inode_blocks(struct inode *inode) -{ - loff_t result = ADDRS_PER_INODE(inode); - loff_t leaf_count = ADDRS_PER_BLOCK(inode); - - /* two direct node blocks */ - result += (leaf_count * 2); - - /* two indirect node blocks */ - leaf_count *= NIDS_PER_BLOCK; - result += (leaf_count * 2); - - /* one double indirect node block */ - leaf_count *= NIDS_PER_BLOCK; - result += leaf_count; - - return result; -} - int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, u64 start, u64 len) { - struct buffer_head map_bh; - sector_t start_blk, last_blk; + struct f2fs_map_blocks map; + sector_t start_blk, last_blk, blk_len, max_len; pgoff_t next_pgofs; u64 logical = 0, phys = 0, size = 0; u32 flags = 0; int ret = 0; - bool compr_cluster = false; + bool compr_cluster = false, compr_appended; unsigned int cluster_size = F2FS_I(inode)->i_cluster_size; + unsigned int count_in_cluster = 0; + loff_t maxbytes; if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { ret = f2fs_precache_extents(inode); @@ -1883,7 +1917,16 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, if (ret) return ret; - inode_lock(inode); + inode_lock_shared(inode); + + maxbytes = F2FS_BLK_TO_BYTES(max_file_blocks(inode)); + if (start > maxbytes) { + ret = -EFBIG; + goto out; + } + + if (len > maxbytes || (maxbytes - len) < start) + len = maxbytes - start; if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { ret = f2fs_xattr_fiemap(inode, fieinfo); @@ -1896,41 +1939,64 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, goto out; } - if (logical_to_blk(inode, len) == 0) - len = blk_to_logical(inode, 1); - - start_blk = logical_to_blk(inode, start); - last_blk = logical_to_blk(inode, start + len - 1); + start_blk = F2FS_BYTES_TO_BLK(start); + last_blk = F2FS_BYTES_TO_BLK(start + len - 1); + blk_len = last_blk - start_blk + 1; + max_len = F2FS_BYTES_TO_BLK(maxbytes) - start_blk; next: - memset(&map_bh, 0, sizeof(struct buffer_head)); - map_bh.b_size = len; + memset(&map, 0, sizeof(map)); + map.m_lblk = start_blk; + map.m_len = blk_len; + map.m_next_pgofs = &next_pgofs; + map.m_seg_type = NO_CHECK_TYPE; - if (compr_cluster) - map_bh.b_size = blk_to_logical(inode, cluster_size - 1); + if (compr_cluster) { + map.m_lblk += 1; + map.m_len = cluster_size - count_in_cluster; + } - ret = get_data_block(inode, start_blk, &map_bh, 0, - F2FS_GET_BLOCK_FIEMAP, &next_pgofs); + ret = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_FIEMAP); if (ret) goto out; /* HOLE */ - if (!buffer_mapped(&map_bh)) { + if (!compr_cluster && !(map.m_flags & F2FS_MAP_FLAGS)) { start_blk = next_pgofs; - if (blk_to_logical(inode, start_blk) < blk_to_logical(inode, - max_inode_blocks(inode))) + if (F2FS_BLK_TO_BYTES(start_blk) < maxbytes) goto prep_next; flags |= FIEMAP_EXTENT_LAST; } + /* + * current extent may cross boundary of inquiry, increase len to + * requery. + */ + if (!compr_cluster && (map.m_flags & F2FS_MAP_MAPPED) && + map.m_lblk + map.m_len - 1 == last_blk && + blk_len != max_len) { + blk_len = max_len; + goto next; + } + + compr_appended = false; + /* In a case of compressed cluster, append this to the last extent */ + if (compr_cluster && ((map.m_flags & F2FS_MAP_DELALLOC) || + !(map.m_flags & F2FS_MAP_FLAGS))) { + compr_appended = true; + goto skip_fill; + } + if (size) { + flags |= FIEMAP_EXTENT_MERGED; if (IS_ENCRYPTED(inode)) flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; ret = fiemap_fill_next_extent(fieinfo, logical, phys, size, flags); + trace_f2fs_fiemap(inode, logical, phys, size, flags, ret); if (ret) goto out; size = 0; @@ -1939,39 +2005,37 @@ next: if (start_blk > last_blk) goto out; - if (compr_cluster) { +skip_fill: + if (map.m_pblk == COMPRESS_ADDR) { + compr_cluster = true; + count_in_cluster = 1; + } else if (compr_appended) { + unsigned int appended_blks = cluster_size - + count_in_cluster + 1; + size += F2FS_BLK_TO_BYTES(appended_blks); + start_blk += appended_blks; compr_cluster = false; + } else { + logical = F2FS_BLK_TO_BYTES(start_blk); + phys = __is_valid_data_blkaddr(map.m_pblk) ? + F2FS_BLK_TO_BYTES(map.m_pblk) : 0; + size = F2FS_BLK_TO_BYTES(map.m_len); + flags = 0; + + if (compr_cluster) { + flags = FIEMAP_EXTENT_ENCODED; + count_in_cluster += map.m_len; + if (count_in_cluster == cluster_size) { + compr_cluster = false; + size += F2FS_BLKSIZE; + } + } else if (map.m_flags & F2FS_MAP_DELALLOC) { + flags = FIEMAP_EXTENT_UNWRITTEN; + } - - logical = blk_to_logical(inode, start_blk - 1); - phys = blk_to_logical(inode, map_bh.b_blocknr); - size = blk_to_logical(inode, cluster_size); - - flags |= FIEMAP_EXTENT_ENCODED; - - start_blk += cluster_size - 1; - - if (start_blk > last_blk) - goto out; - - goto prep_next; + start_blk += F2FS_BYTES_TO_BLK(size); } - if (map_bh.b_blocknr == COMPRESS_ADDR) { - compr_cluster = true; - start_blk++; - goto prep_next; - } - - logical = blk_to_logical(inode, start_blk); - phys = blk_to_logical(inode, map_bh.b_blocknr); - size = map_bh.b_size; - flags = 0; - if (buffer_unwritten(&map_bh)) - flags = FIEMAP_EXTENT_UNWRITTEN; - - start_blk += logical_to_blk(inode, size); - prep_next: cond_resched(); if (fatal_signal_pending(current)) @@ -1982,39 +2046,43 @@ out: if (ret == 1) ret = 0; - inode_unlock(inode); + inode_unlock_shared(inode); return ret; } static inline loff_t f2fs_readpage_limit(struct inode *inode) { - if (IS_ENABLED(CONFIG_FS_VERITY) && - (IS_VERITY(inode) || f2fs_verity_in_progress(inode))) - return inode->i_sb->s_maxbytes; + if (IS_ENABLED(CONFIG_FS_VERITY) && IS_VERITY(inode)) + return F2FS_BLK_TO_BYTES(max_file_blocks(inode)); return i_size_read(inode); } -static int f2fs_read_single_page(struct inode *inode, struct page *page, +static inline blk_opf_t f2fs_ra_op_flags(struct readahead_control *rac) +{ + return rac ? REQ_RAHEAD : 0; +} + +static int f2fs_read_single_page(struct inode *inode, struct folio *folio, unsigned nr_pages, struct f2fs_map_blocks *map, struct bio **bio_ret, sector_t *last_block_in_bio, - bool is_readahead) + struct readahead_control *rac) { struct bio *bio = *bio_ret; - const unsigned blkbits = inode->i_blkbits; - const unsigned blocksize = 1 << blkbits; + const unsigned int blocksize = F2FS_BLKSIZE; sector_t block_in_file; sector_t last_block; sector_t last_block_in_file; sector_t block_nr; + pgoff_t index = folio->index; int ret = 0; - block_in_file = (sector_t)page_index(page); + block_in_file = (sector_t)index; last_block = block_in_file + nr_pages; - last_block_in_file = (f2fs_readpage_limit(inode) + blocksize - 1) >> - blkbits; + last_block_in_file = F2FS_BYTES_TO_BLK(f2fs_readpage_limit(inode) + + blocksize - 1); if (last_block > last_block_in_file) last_block = last_block_in_file; @@ -2036,19 +2104,13 @@ static int f2fs_read_single_page(struct inode *inode, struct page *page, map->m_lblk = block_in_file; map->m_len = last_block - block_in_file; - ret = f2fs_map_blocks(inode, map, 0, F2FS_GET_BLOCK_DEFAULT); + ret = f2fs_map_blocks(inode, map, F2FS_GET_BLOCK_DEFAULT); if (ret) goto out; got_it: if ((map->m_flags & F2FS_MAP_MAPPED)) { block_nr = map->m_pblk + block_in_file - map->m_lblk; - SetPageMappedToDisk(page); - - if (!PageUptodate(page) && (!PageSwapCache(page) && - !cleancache_get_page(page))) { - SetPageUptodate(page); - goto confused; - } + folio_set_mappedtodisk(folio); if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, DATA_GENERIC_ENHANCE_READ)) { @@ -2057,15 +2119,15 @@ got_it: } } else { zero_out: - zero_user_segment(page, 0, PAGE_SIZE); - if (f2fs_need_verity(inode, page->index) && - !fsverity_verify_page(page)) { + folio_zero_segment(folio, 0, folio_size(folio)); + if (f2fs_need_verity(inode, index) && + !fsverity_verify_folio(folio)) { ret = -EIO; goto out; } - if (!PageUptodate(page)) - SetPageUptodate(page); - unlock_page(page); + if (!folio_test_uptodate(folio)) + folio_mark_uptodate(folio); + folio_unlock(folio); goto out; } @@ -2073,22 +2135,17 @@ zero_out: * This page will go to BIO. Do we need to send this * BIO off first? */ - if (bio && !page_is_mergeable(F2FS_I_SB(inode), bio, - *last_block_in_bio, block_nr)) { + if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio, + *last_block_in_bio, block_nr) || + !f2fs_crypt_mergeable_bio(bio, inode, index, NULL))) { submit_and_realloc: - __submit_bio(F2FS_I_SB(inode), bio, DATA); + f2fs_submit_read_bio(F2FS_I_SB(inode), bio, DATA); bio = NULL; } - if (bio == NULL) { + if (bio == NULL) bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, - is_readahead ? REQ_RAHEAD : 0, page->index, + f2fs_ra_op_flags(rac), index, false); - if (IS_ERR(bio)) { - ret = PTR_ERR(bio); - bio = NULL; - goto out; - } - } /* * If the page is under writeback, we need to wait for @@ -2096,20 +2153,13 @@ submit_and_realloc: */ f2fs_wait_on_block_writeback(inode, block_nr); - if (bio_add_page(bio, page, blocksize, 0) < blocksize) + if (!bio_add_folio(bio, folio, blocksize, 0)) goto submit_and_realloc; inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); - f2fs_update_iostat(F2FS_I_SB(inode), FS_DATA_READ_IO, F2FS_BLKSIZE); - ClearPageError(page); + f2fs_update_iostat(F2FS_I_SB(inode), NULL, FS_DATA_READ_IO, + F2FS_BLKSIZE); *last_block_in_bio = block_nr; - goto out; -confused: - if (bio) { - __submit_bio(F2FS_I_SB(inode), bio, DATA); - bio = NULL; - } - unlock_page(page); out: *bio_ret = bio; return ret; @@ -2118,7 +2168,7 @@ out: #ifdef CONFIG_F2FS_FS_COMPRESSION int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, unsigned nr_pages, sector_t *last_block_in_bio, - bool is_readahead, bool for_write) + struct readahead_control *rac, bool for_write) { struct dnode_of_data dn; struct inode *inode = cc->inode; @@ -2126,31 +2176,43 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, struct bio *bio = *bio_ret; unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size; sector_t last_block_in_file; - const unsigned blkbits = inode->i_blkbits; - const unsigned blocksize = 1 << blkbits; + const unsigned int blocksize = F2FS_BLKSIZE; struct decompress_io_ctx *dic = NULL; + struct extent_info ei = {}; + bool from_dnode = true; int i; int ret = 0; + if (unlikely(f2fs_cp_error(sbi))) { + ret = -EIO; + from_dnode = false; + goto out_put_dnode; + } + f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc)); - last_block_in_file = (f2fs_readpage_limit(inode) + - blocksize - 1) >> blkbits; + last_block_in_file = F2FS_BYTES_TO_BLK(f2fs_readpage_limit(inode) + + blocksize - 1); /* get rid of pages beyond EOF */ for (i = 0; i < cc->cluster_size; i++) { struct page *page = cc->rpages[i]; + struct folio *folio; if (!page) continue; - if ((sector_t)page->index >= last_block_in_file) { - zero_user_segment(page, 0, PAGE_SIZE); - if (!PageUptodate(page)) - SetPageUptodate(page); - } else if (!PageUptodate(page)) { + + folio = page_folio(page); + if ((sector_t)folio->index >= last_block_in_file) { + folio_zero_segment(folio, 0, folio_size(folio)); + if (!folio_test_uptodate(folio)) + folio_mark_uptodate(folio); + } else if (!folio_test_uptodate(folio)) { continue; } - unlock_page(page); + folio_unlock(folio); + if (for_write) + folio_put(folio); cc->rpages[i] = NULL; cc->nr_rpages--; } @@ -2159,20 +2221,26 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, if (f2fs_cluster_is_empty(cc)) goto out; + if (f2fs_lookup_read_extent_cache(inode, start_idx, &ei)) + from_dnode = false; + + if (!from_dnode) + goto skip_reading_dnode; + set_new_dnode(&dn, inode, NULL, NULL, 0); ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); if (ret) goto out; - /* cluster was overwritten as normal cluster */ - if (dn.data_blkaddr != COMPRESS_ADDR) - goto out; + f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR); +skip_reading_dnode: for (i = 1; i < cc->cluster_size; i++) { block_t blkaddr; - blkaddr = data_blkaddr(dn.inode, dn.node_page, - dn.ofs_in_node + i); + blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_folio, + dn.ofs_in_node + i) : + ei.blk + i - 1; if (!__is_valid_data_blkaddr(blkaddr)) break; @@ -2182,6 +2250,9 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, goto out_put_dnode; } cc->nr_cpages++; + + if (!from_dnode && i >= ei.c_len) + break; } /* nothing to decompress */ @@ -2196,67 +2267,66 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, goto out_put_dnode; } - for (i = 0; i < dic->nr_cpages; i++) { - struct page *page = dic->cpages[i]; + for (i = 0; i < cc->nr_cpages; i++) { + struct folio *folio = page_folio(dic->cpages[i]); block_t blkaddr; struct bio_post_read_ctx *ctx; - blkaddr = data_blkaddr(dn.inode, dn.node_page, - dn.ofs_in_node + i + 1); + blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_folio, + dn.ofs_in_node + i + 1) : + ei.blk + i; - if (bio && !page_is_mergeable(sbi, bio, - *last_block_in_bio, blkaddr)) { -submit_and_realloc: - __submit_bio(sbi, bio, DATA); - bio = NULL; - } + f2fs_wait_on_block_writeback(inode, blkaddr); - if (!bio) { - bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages, - is_readahead ? REQ_RAHEAD : 0, - page->index, for_write); - if (IS_ERR(bio)) { - ret = PTR_ERR(bio); - dic->failed = true; - if (refcount_sub_and_test(dic->nr_cpages - i, - &dic->ref)) { - f2fs_decompress_end_io(dic->rpages, - cc->cluster_size, true, - false); - f2fs_free_dic(dic); - } - f2fs_put_dnode(&dn); - *bio_ret = NULL; - return ret; + if (f2fs_load_compressed_folio(sbi, folio, blkaddr)) { + if (atomic_dec_and_test(&dic->remaining_pages)) { + f2fs_decompress_cluster(dic, true); + break; } + continue; } - f2fs_wait_on_block_writeback(inode, blkaddr); + if (bio && (!page_is_mergeable(sbi, bio, + *last_block_in_bio, blkaddr) || + !f2fs_crypt_mergeable_bio(bio, inode, folio->index, NULL))) { +submit_and_realloc: + f2fs_submit_read_bio(sbi, bio, DATA); + bio = NULL; + } - if (bio_add_page(bio, page, blocksize, 0) < blocksize) + if (!bio) + bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages - i, + f2fs_ra_op_flags(rac), + folio->index, for_write); + + if (!bio_add_folio(bio, folio, blocksize, 0)) goto submit_and_realloc; - /* tag STEP_DECOMPRESS to handle IO in wq */ - ctx = bio->bi_private; - if (!(ctx->enabled_steps & (1 << STEP_DECOMPRESS))) - ctx->enabled_steps |= 1 << STEP_DECOMPRESS; + ctx = get_post_read_ctx(bio); + ctx->enabled_steps |= STEP_DECOMPRESS; + refcount_inc(&dic->refcnt); inc_page_count(sbi, F2FS_RD_DATA); - f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); - f2fs_update_iostat(sbi, FS_CDATA_READ_IO, F2FS_BLKSIZE); - ClearPageError(page); + f2fs_update_iostat(sbi, inode, FS_DATA_READ_IO, F2FS_BLKSIZE); *last_block_in_bio = blkaddr; } - f2fs_put_dnode(&dn); + if (from_dnode) + f2fs_put_dnode(&dn); *bio_ret = bio; return 0; out_put_dnode: - f2fs_put_dnode(&dn); + if (from_dnode) + f2fs_put_dnode(&dn); out: - f2fs_decompress_end_io(cc->rpages, cc->cluster_size, true, false); + for (i = 0; i < cc->cluster_size; i++) { + if (cc->rpages[i]) { + ClearPageUptodate(cc->rpages[i]); + unlock_page(cc->rpages[i]); + } + } *bio_ret = bio; return ret; } @@ -2265,14 +2335,9 @@ out: /* * This function was originally taken from fs/mpage.c, and customized for f2fs. * Major change was from block_size == page_size in f2fs by default. - * - * Note that the aops->readpages() function is ONLY used for read-ahead. If - * this function ever deviates from doing just read-ahead, it should either - * use ->readpage() or do the necessary surgery to decouple ->readpages() - * from read-ahead. */ static int f2fs_mpage_readpages(struct inode *inode, - struct readahead_control *rac, struct page *page) + struct readahead_control *rac, struct folio *folio) { struct bio *bio = NULL; sector_t last_block_in_bio = 0; @@ -2288,11 +2353,21 @@ static int f2fs_mpage_readpages(struct inode *inode, .nr_rpages = 0, .nr_cpages = 0, }; + pgoff_t nc_cluster_idx = NULL_CLUSTER; + pgoff_t index; #endif unsigned nr_pages = rac ? readahead_count(rac) : 1; unsigned max_nr_pages = nr_pages; int ret = 0; +#ifdef CONFIG_F2FS_FS_COMPRESSION + if (f2fs_compressed_file(inode)) { + index = rac ? readahead_index(rac) : folio->index; + max_nr_pages = round_up(index + nr_pages, cc.cluster_size) - + round_down(index, cc.cluster_size); + } +#endif + map.m_pblk = 0; map.m_lblk = 0; map.m_len = 0; @@ -2304,54 +2379,63 @@ static int f2fs_mpage_readpages(struct inode *inode, for (; nr_pages; nr_pages--) { if (rac) { - page = readahead_page(rac); - prefetchw(&page->flags); + folio = readahead_folio(rac); + prefetchw(&folio->flags); } #ifdef CONFIG_F2FS_FS_COMPRESSION - if (f2fs_compressed_file(inode)) { - /* there are remained comressed pages, submit them */ - if (!f2fs_cluster_can_merge_page(&cc, page->index)) { - ret = f2fs_read_multi_pages(&cc, &bio, - max_nr_pages, - &last_block_in_bio, - rac != NULL, false); - f2fs_destroy_compress_ctx(&cc); - if (ret) - goto set_error_page; - } - ret = f2fs_is_compressed_cluster(inode, page->index); - if (ret < 0) + index = folio->index; + + if (!f2fs_compressed_file(inode)) + goto read_single_page; + + /* there are remained compressed pages, submit them */ + if (!f2fs_cluster_can_merge_page(&cc, index)) { + ret = f2fs_read_multi_pages(&cc, &bio, + max_nr_pages, + &last_block_in_bio, + rac, false); + f2fs_destroy_compress_ctx(&cc, false); + if (ret) goto set_error_page; - else if (!ret) + } + if (cc.cluster_idx == NULL_CLUSTER) { + if (nc_cluster_idx == index >> cc.log_cluster_size) goto read_single_page; - ret = f2fs_init_compress_ctx(&cc); - if (ret) + ret = f2fs_is_compressed_cluster(inode, index); + if (ret < 0) goto set_error_page; + else if (!ret) { + nc_cluster_idx = + index >> cc.log_cluster_size; + goto read_single_page; + } - f2fs_compress_ctx_add_page(&cc, page); - - goto next_page; + nc_cluster_idx = NULL_CLUSTER; } + ret = f2fs_init_compress_ctx(&cc); + if (ret) + goto set_error_page; + + f2fs_compress_ctx_add_page(&cc, folio); + + goto next_page; read_single_page: #endif - ret = f2fs_read_single_page(inode, page, max_nr_pages, &map, + ret = f2fs_read_single_page(inode, folio, max_nr_pages, &map, &bio, &last_block_in_bio, rac); if (ret) { #ifdef CONFIG_F2FS_FS_COMPRESSION set_error_page: #endif - SetPageError(page); - zero_user_segment(page, 0, PAGE_SIZE); - unlock_page(page); + folio_zero_segment(folio, 0, folio_size(folio)); + folio_unlock(folio); } #ifdef CONFIG_F2FS_FS_COMPRESSION next_page: #endif - if (rac) - put_page(page); #ifdef CONFIG_F2FS_FS_COMPRESSION if (f2fs_compressed_file(inode)) { @@ -2360,34 +2444,34 @@ next_page: ret = f2fs_read_multi_pages(&cc, &bio, max_nr_pages, &last_block_in_bio, - rac != NULL, false); - f2fs_destroy_compress_ctx(&cc); + rac, false); + f2fs_destroy_compress_ctx(&cc, false); } } #endif } if (bio) - __submit_bio(F2FS_I_SB(inode), bio, DATA); + f2fs_submit_read_bio(F2FS_I_SB(inode), bio, DATA); return ret; } -static int f2fs_read_data_page(struct file *file, struct page *page) +static int f2fs_read_data_folio(struct file *file, struct folio *folio) { - struct inode *inode = page_file_mapping(page)->host; + struct inode *inode = folio->mapping->host; int ret = -EAGAIN; - trace_f2fs_readpage(page, DATA); + trace_f2fs_readpage(folio, DATA); if (!f2fs_is_compress_backend_ready(inode)) { - unlock_page(page); + folio_unlock(folio); return -EOPNOTSUPP; } /* If the file has inline data, try to read it directly */ if (f2fs_has_inline_data(inode)) - ret = f2fs_read_inline_data(inode, page); + ret = f2fs_read_inline_data(inode, folio); if (ret == -EAGAIN) - ret = f2fs_mpage_readpages(inode, NULL, page); + ret = f2fs_mpage_readpages(inode, NULL, folio); return ret; } @@ -2400,7 +2484,7 @@ static void f2fs_readahead(struct readahead_control *rac) if (!f2fs_is_compress_backend_ready(inode)) return; - /* If the file has inline data, skip readpages */ + /* If the file has inline data, skip readahead */ if (f2fs_has_inline_data(inode)) return; @@ -2409,8 +2493,9 @@ static void f2fs_readahead(struct readahead_control *rac) int f2fs_encrypt_one_page(struct f2fs_io_info *fio) { - struct inode *inode = fio->page->mapping->host; - struct page *mpage, *page; + struct inode *inode = fio_inode(fio); + struct folio *mfolio; + struct page *page; gfp_t gfp_flags = GFP_NOFS; if (!f2fs_encrypted_file(inode)) @@ -2418,29 +2503,29 @@ int f2fs_encrypt_one_page(struct f2fs_io_info *fio) page = fio->compressed_page ? fio->compressed_page : fio->page; - /* wait for GCed page writeback via META_MAPPING */ - f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); + if (fscrypt_inode_uses_inline_crypto(inode)) + return 0; retry_encrypt: - fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page, + fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page_folio(page), PAGE_SIZE, 0, gfp_flags); if (IS_ERR(fio->encrypted_page)) { /* flush pending IOs and wait for a while in the ENOMEM case */ if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { f2fs_flush_merged_writes(fio->sbi); - congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); + memalloc_retry_wait(GFP_NOFS); gfp_flags |= __GFP_NOFAIL; goto retry_encrypt; } return PTR_ERR(fio->encrypted_page); } - mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); - if (mpage) { - if (PageUptodate(mpage)) - memcpy(page_address(mpage), + mfolio = filemap_lock_folio(META_MAPPING(fio->sbi), fio->old_blkaddr); + if (!IS_ERR(mfolio)) { + if (folio_test_uptodate(mfolio)) + memcpy(folio_address(mfolio), page_address(fio->encrypted_page), PAGE_SIZE); - f2fs_put_page(mpage, 1); + f2fs_folio_put(mfolio, true); } return 0; } @@ -2449,31 +2534,29 @@ static inline bool check_inplace_update_policy(struct inode *inode, struct f2fs_io_info *fio) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - unsigned int policy = SM_I(sbi)->ipu_policy; - if (policy & (0x1 << F2FS_IPU_FORCE)) + if (IS_F2FS_IPU_HONOR_OPU_WRITE(sbi) && + is_inode_flag_set(inode, FI_OPU_WRITE)) + return false; + if (IS_F2FS_IPU_FORCE(sbi)) return true; - if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) + if (IS_F2FS_IPU_SSR(sbi) && f2fs_need_SSR(sbi)) return true; - if (policy & (0x1 << F2FS_IPU_UTIL) && - utilization(sbi) > SM_I(sbi)->min_ipu_util) + if (IS_F2FS_IPU_UTIL(sbi) && utilization(sbi) > SM_I(sbi)->min_ipu_util) return true; - if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && - utilization(sbi) > SM_I(sbi)->min_ipu_util) + if (IS_F2FS_IPU_SSR_UTIL(sbi) && f2fs_need_SSR(sbi) && + utilization(sbi) > SM_I(sbi)->min_ipu_util) return true; /* * IPU for rewrite async pages */ - if (policy & (0x1 << F2FS_IPU_ASYNC) && - fio && fio->op == REQ_OP_WRITE && - !(fio->op_flags & REQ_SYNC) && - !IS_ENCRYPTED(inode)) + if (IS_F2FS_IPU_ASYNC(sbi) && fio && fio->op == REQ_OP_WRITE && + !(fio->op_flags & REQ_SYNC) && !IS_ENCRYPTED(inode)) return true; /* this is only set during fdatasync */ - if (policy & (0x1 << F2FS_IPU_FSYNC) && - is_inode_flag_set(inode, FI_NEED_IPU)) + if (IS_F2FS_IPU_FSYNC(sbi) && is_inode_flag_set(inode, FI_NEED_IPU)) return true; if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && @@ -2485,11 +2568,15 @@ static inline bool check_inplace_update_policy(struct inode *inode, bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) { + /* swap file is migrating in aligned write mode */ + if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) + return false; + if (f2fs_is_pinned_file(inode)) return true; /* if this is cold file, we should overwrite to avoid fragmentation */ - if (file_is_cold(inode)) + if (file_is_cold(inode) && !is_inode_flag_set(inode, FI_OPU_WRITE)) return true; return check_inplace_update_policy(inode, fio); @@ -2499,18 +2586,34 @@ bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + /* The below cases were checked when setting it. */ + if (f2fs_is_pinned_file(inode)) + return false; + if (fio && is_sbi_flag_set(sbi, SBI_NEED_FSCK)) + return true; if (f2fs_lfs_mode(sbi)) return true; if (S_ISDIR(inode->i_mode)) return true; if (IS_NOQUOTA(inode)) return true; - if (f2fs_is_atomic_file(inode)) + if (f2fs_used_in_atomic_write(inode)) + return true; + /* rewrite low ratio compress data w/ OPU mode to avoid fragmentation */ + if (f2fs_compressed_file(inode) && + F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER && + is_inode_flag_set(inode, FI_ENABLE_COMPRESS)) + return true; + + /* swap file is migrating in aligned write mode */ + if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) + return true; + + if (is_inode_flag_set(inode, FI_OPU_WRITE)) return true; + if (fio) { - if (is_cold_data(fio->page)) - return true; - if (IS_ATOMIC_WRITTEN_PAGE(fio->page)) + if (page_private_gcing(fio->page)) return true; if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) @@ -2521,7 +2624,7 @@ bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) static inline bool need_inplace_update(struct f2fs_io_info *fio) { - struct inode *inode = fio->page->mapping->host; + struct inode *inode = fio_inode(fio); if (f2fs_should_update_outplace(inode, fio)) return false; @@ -2531,19 +2634,25 @@ static inline bool need_inplace_update(struct f2fs_io_info *fio) int f2fs_do_write_data_page(struct f2fs_io_info *fio) { - struct page *page = fio->page; - struct inode *inode = page->mapping->host; + struct folio *folio = fio->folio; + struct inode *inode = folio->mapping->host; struct dnode_of_data dn; - struct extent_info ei = {0,0,0}; struct node_info ni; bool ipu_force = false; + bool atomic_commit; int err = 0; - set_new_dnode(&dn, inode, NULL, NULL, 0); - if (need_inplace_update(fio) && - f2fs_lookup_extent_cache(inode, page->index, &ei)) { - fio->old_blkaddr = ei.blk + page->index - ei.fofs; + /* Use COW inode to make dnode_of_data for atomic write */ + atomic_commit = f2fs_is_atomic_file(inode) && + folio_test_f2fs_atomic(folio); + if (atomic_commit) + set_new_dnode(&dn, F2FS_I(inode)->cow_inode, NULL, NULL, 0); + else + set_new_dnode(&dn, inode, NULL, NULL, 0); + if (need_inplace_update(fio) && + f2fs_lookup_read_extent_cache_block(inode, folio->index, + &fio->old_blkaddr)) { if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, DATA_GENERIC_ENHANCE)) return -EFSCORRUPTED; @@ -2557,7 +2666,7 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio) if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) return -EAGAIN; - err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); + err = f2fs_get_dnode_of_data(&dn, folio->index, LOOKUP_NODE); if (err) goto out; @@ -2565,8 +2674,8 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio) /* This page is already truncated */ if (fio->old_blkaddr == NULL_ADDR) { - ClearPageUptodate(page); - clear_cold_data(page); + folio_clear_uptodate(folio); + folio_clear_f2fs_gcing(folio); goto out_writepage; } got_it: @@ -2576,6 +2685,11 @@ got_it: err = -EFSCORRUPTED; goto out_writepage; } + + /* wait for GCed page writeback via META_MAPPING */ + if (fio->meta_gc) + f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); + /* * If current allocation needs SSR, * it had better in-place writes for updated data. @@ -2587,21 +2701,19 @@ got_it: if (err) goto out_writepage; - set_page_writeback(page); - ClearPageError(page); + folio_start_writeback(folio); f2fs_put_dnode(&dn); if (fio->need_lock == LOCK_REQ) f2fs_unlock_op(fio->sbi); err = f2fs_inplace_write_data(fio); if (err) { - if (f2fs_encrypted_file(inode)) + if (fscrypt_inode_uses_fs_layer_crypto(inode)) fscrypt_finalize_bounce_page(&fio->encrypted_page); - if (PageWriteback(page)) - end_page_writeback(page); + folio_end_writeback(folio); } else { set_inode_flag(inode, FI_UPDATE_WRITE); } - trace_f2fs_do_write_data_page(fio->page, IPU); + trace_f2fs_do_write_data_page(folio, IPU); return err; } @@ -2613,7 +2725,7 @@ got_it: fio->need_lock = LOCK_REQ; } - err = f2fs_get_node_info(fio->sbi, dn.nid, &ni); + err = f2fs_get_node_info(fio->sbi, dn.nid, &ni, false); if (err) goto out_writepage; @@ -2623,18 +2735,17 @@ got_it: if (err) goto out_writepage; - set_page_writeback(page); - ClearPageError(page); + folio_start_writeback(folio); if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR) f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false); /* LFS mode write path */ f2fs_outplace_write_data(&dn, fio); - trace_f2fs_do_write_data_page(page, OPU); + trace_f2fs_do_write_data_page(folio, OPU); set_inode_flag(inode, FI_APPEND_WRITE); - if (page->index == 0) - set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); + if (atomic_commit) + folio_clear_f2fs_atomic(folio); out_writepage: f2fs_put_dnode(&dn); out: @@ -2643,21 +2754,23 @@ out: return err; } -int f2fs_write_single_data_page(struct page *page, int *submitted, +int f2fs_write_single_data_page(struct folio *folio, int *submitted, struct bio **bio, sector_t *last_block, struct writeback_control *wbc, enum iostat_type io_type, - int compr_blocks) + int compr_blocks, + bool allow_balance) { - struct inode *inode = page->mapping->host; + struct inode *inode = folio->mapping->host; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); loff_t i_size = i_size_read(inode); const pgoff_t end_index = ((unsigned long long)i_size) >> PAGE_SHIFT; - loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT; + loff_t psize = (loff_t)(folio->index + 1) << PAGE_SHIFT; unsigned offset = 0; bool need_balance_fs = false; + bool quota_inode = IS_NOQUOTA(inode); int err = 0; struct f2fs_io_info fio = { .sbi = sbi, @@ -2666,27 +2779,33 @@ int f2fs_write_single_data_page(struct page *page, int *submitted, .op = REQ_OP_WRITE, .op_flags = wbc_to_write_flags(wbc), .old_blkaddr = NULL_ADDR, - .page = page, + .folio = folio, .encrypted_page = NULL, - .submitted = false, + .submitted = 0, .compr_blocks = compr_blocks, - .need_lock = LOCK_RETRY, + .need_lock = compr_blocks ? LOCK_DONE : LOCK_RETRY, + .meta_gc = f2fs_meta_inode_gc_required(inode) ? 1 : 0, .io_type = io_type, .io_wbc = wbc, .bio = bio, .last_block = last_block, }; - trace_f2fs_writepage(page, DATA); + trace_f2fs_writepage(folio, DATA); - /* we should bypass data pages to proceed the kworkder jobs */ + /* we should bypass data pages to proceed the kworker jobs */ if (unlikely(f2fs_cp_error(sbi))) { - mapping_set_error(page->mapping, -EIO); + mapping_set_error(folio->mapping, -EIO); /* * don't drop any dirty dentry pages for keeping lastest * directory structure. */ - if (S_ISDIR(inode->i_mode)) + if (S_ISDIR(inode->i_mode) && + !is_sbi_flag_set(sbi, SBI_IS_CLOSE)) + goto redirty_out; + + /* keep data pages in remount-ro mode */ + if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_READONLY) goto redirty_out; goto out; } @@ -2694,7 +2813,7 @@ int f2fs_write_single_data_page(struct page *page, int *submitted, if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) goto redirty_out; - if (page->index < end_index || + if (folio->index < end_index || f2fs_verity_in_progress(inode) || compr_blocks) goto write; @@ -2704,36 +2823,34 @@ int f2fs_write_single_data_page(struct page *page, int *submitted, * this page does not have to be written to disk. */ offset = i_size & (PAGE_SIZE - 1); - if ((page->index >= end_index + 1) || !offset) + if ((folio->index >= end_index + 1) || !offset) goto out; - zero_user_segment(page, offset, PAGE_SIZE); + folio_zero_segment(folio, offset, folio_size(folio)); write: - if (f2fs_is_drop_cache(inode)) - goto out; - /* we should not write 0'th page having journal header */ - if (f2fs_is_volatile_file(inode) && (!page->index || - (!wbc->for_reclaim && - f2fs_available_free_memory(sbi, BASE_CHECK)))) - goto redirty_out; - /* Dentry/quota blocks are controlled by checkpoint */ - if (S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) { + if (S_ISDIR(inode->i_mode) || quota_inode) { + /* + * We need to wait for node_write to avoid block allocation during + * checkpoint. This can only happen to quota writes which can cause + * the below discard race condition. + */ + if (quota_inode) + f2fs_down_read(&sbi->node_write); + fio.need_lock = LOCK_DONE; err = f2fs_do_write_data_page(&fio); + + if (quota_inode) + f2fs_up_read(&sbi->node_write); + goto done; } - if (!wbc->for_reclaim) - need_balance_fs = true; - else if (has_not_enough_free_secs(sbi, 0, 0)) - goto redirty_out; - else - set_inode_flag(inode, FI_HOT_DATA); - + need_balance_fs = true; err = -EAGAIN; if (f2fs_has_inline_data(inode)) { - err = f2fs_write_inline_data(inode, page); + err = f2fs_write_inline_data(inode, folio); if (!err) goto out; } @@ -2741,6 +2858,7 @@ write: if (err == -EAGAIN) { err = f2fs_do_write_data_page(&fio); if (err == -EAGAIN) { + f2fs_bug_on(sbi, compr_blocks); fio.need_lock = LOCK_REQ; err = f2fs_do_write_data_page(&fio); } @@ -2762,70 +2880,42 @@ done: out: inode_dec_dirty_pages(inode); if (err) { - ClearPageUptodate(page); - clear_cold_data(page); - } - - if (wbc->for_reclaim) { - f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); - clear_inode_flag(inode, FI_HOT_DATA); - f2fs_remove_dirty_inode(inode); - submitted = NULL; + folio_clear_uptodate(folio); + folio_clear_f2fs_gcing(folio); } - unlock_page(page); + folio_unlock(folio); if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) && - !F2FS_I(inode)->cp_task) + !F2FS_I(inode)->wb_task && allow_balance) f2fs_balance_fs(sbi, need_balance_fs); if (unlikely(f2fs_cp_error(sbi))) { f2fs_submit_merged_write(sbi, DATA); - f2fs_submit_merged_ipu_write(sbi, bio, NULL); + if (bio && *bio) + f2fs_submit_merged_ipu_write(sbi, bio, NULL); submitted = NULL; } if (submitted) - *submitted = fio.submitted ? 1 : 0; + *submitted = fio.submitted; return 0; redirty_out: - redirty_page_for_writepage(wbc, page); + folio_redirty_for_writepage(wbc, folio); /* - * pageout() in MM traslates EAGAIN, so calls handle_write_error() + * pageout() in MM translates EAGAIN, so calls handle_write_error() * -> mapping_set_error() -> set_bit(AS_EIO, ...). * file_write_and_wait_range() will see EIO error, which is critical * to return value of fsync() followed by atomic_write failure to user. */ - if (!err || wbc->for_reclaim) - return AOP_WRITEPAGE_ACTIVATE; - unlock_page(page); + folio_unlock(folio); + if (!err) + return 1; return err; } -static int f2fs_write_data_page(struct page *page, - struct writeback_control *wbc) -{ -#ifdef CONFIG_F2FS_FS_COMPRESSION - struct inode *inode = page->mapping->host; - - if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) - goto out; - - if (f2fs_compressed_file(inode)) { - if (f2fs_is_compressed_cluster(inode, page->index)) { - redirty_page_for_writepage(wbc, page); - return AOP_WRITEPAGE_ACTIVATE; - } - } -out: -#endif - - return f2fs_write_single_data_page(page, NULL, NULL, NULL, - wbc, FS_DATA_IO, 0); -} - /* - * This function was copied from write_cche_pages from mm/page-writeback.c. + * This function was copied from write_cache_pages from mm/page-writeback.c. * The major change is making write step of cold data page separately from * warm/hot data page. */ @@ -2835,7 +2925,9 @@ static int f2fs_write_cache_pages(struct address_space *mapping, { int ret = 0; int done = 0, retry = 0; - struct pagevec pvec; + struct page *pages_local[F2FS_ONSTACK_PAGES]; + struct page **pages = pages_local; + struct folio_batch fbatch; struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); struct bio *bio = NULL; sector_t last_block; @@ -2849,14 +2941,16 @@ static int f2fs_write_cache_pages(struct address_space *mapping, .rpages = NULL, .nr_rpages = 0, .cpages = NULL, + .valid_nr_cpages = 0, .rbuf = NULL, .cbuf = NULL, .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size, .private = NULL, }; #endif + int nr_folios, p, idx; int nr_pages; - pgoff_t uninitialized_var(writeback_index); + unsigned int max_pages = F2FS_ONSTACK_PAGES; pgoff_t index; pgoff_t end; /* Inclusive */ pgoff_t done_index; @@ -2866,7 +2960,16 @@ static int f2fs_write_cache_pages(struct address_space *mapping, int submitted = 0; int i; - pagevec_init(&pvec); +#ifdef CONFIG_F2FS_FS_COMPRESSION + if (f2fs_compressed_file(inode) && + 1 << cc.log_cluster_size > F2FS_ONSTACK_PAGES) { + pages = f2fs_kzalloc(sbi, sizeof(struct page *) << + cc.log_cluster_size, GFP_NOFS | __GFP_NOFAIL); + max_pages = 1 << cc.log_cluster_size; + } +#endif + + folio_batch_init(&fbatch); if (get_dirty_pages(mapping->host) <= SM_I(F2FS_M_SB(mapping))->min_hot_blocks) @@ -2875,8 +2978,7 @@ static int f2fs_write_cache_pages(struct address_space *mapping, clear_inode_flag(mapping->host, FI_HOT_DATA); if (wbc->range_cyclic) { - writeback_index = mapping->writeback_index; /* prev offset */ - index = writeback_index; + index = mapping->writeback_index; /* prev offset */ end = -1; } else { index = wbc->range_start >> PAGE_SHIFT; @@ -2884,28 +2986,54 @@ static int f2fs_write_cache_pages(struct address_space *mapping, if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) range_whole = 1; } - if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) - tag = PAGECACHE_TAG_TOWRITE; - else - tag = PAGECACHE_TAG_DIRTY; + tag = wbc_to_tag(wbc); retry: retry = 0; if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) tag_pages_for_writeback(mapping, index, end); done_index = index; while (!done && !retry && (index <= end)) { - nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end, - tag); - if (nr_pages == 0) + nr_pages = 0; +again: + nr_folios = filemap_get_folios_tag(mapping, &index, end, + tag, &fbatch); + if (nr_folios == 0) { + if (nr_pages) + goto write; break; + } + for (i = 0; i < nr_folios; i++) { + struct folio *folio = fbatch.folios[i]; + + idx = 0; + p = folio_nr_pages(folio); +add_more: + pages[nr_pages] = folio_page(folio, idx); + folio_get(folio); + if (++nr_pages == max_pages) { + index = folio->index + idx + 1; + folio_batch_release(&fbatch); + goto write; + } + if (++idx < p) + goto add_more; + } + folio_batch_release(&fbatch); + goto again; +write: for (i = 0; i < nr_pages; i++) { - struct page *page = pvec.pages[i]; + struct page *page = pages[i]; + struct folio *folio = page_folio(page); bool need_readd; readd: need_readd = false; #ifdef CONFIG_F2FS_FS_COMPRESSION if (f2fs_compressed_file(inode)) { + void *fsdata = NULL; + struct page *pagep; + int ret2; + ret = f2fs_init_compress_ctx(&cc); if (ret) { done = 1; @@ -2913,7 +3041,7 @@ readd: } if (!f2fs_cluster_can_merge_page(&cc, - page->index)) { + folio->index)) { ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type); if (!ret) @@ -2922,29 +3050,30 @@ readd: } if (unlikely(f2fs_cp_error(sbi))) - goto lock_page; + goto lock_folio; - if (f2fs_cluster_is_empty(&cc)) { - void *fsdata = NULL; - struct page *pagep; - int ret2; + if (!f2fs_cluster_is_empty(&cc)) + goto lock_folio; - ret2 = f2fs_prepare_compress_overwrite( + if (f2fs_all_cluster_page_ready(&cc, + pages, i, nr_pages, true)) + goto lock_folio; + + ret2 = f2fs_prepare_compress_overwrite( inode, &pagep, - page->index, &fsdata); - if (ret2 < 0) { - ret = ret2; - done = 1; - break; - } else if (ret2 && - !f2fs_compress_write_end(inode, - fsdata, page->index, - 1)) { - retry = 1; - break; - } - } else { - goto lock_page; + folio->index, &fsdata); + if (ret2 < 0) { + ret = ret2; + done = 1; + break; + } else if (ret2 && + (!f2fs_compress_write_end(inode, + fsdata, folio->index, 1) || + !f2fs_all_cluster_page_ready(&cc, + pages, i, nr_pages, + false))) { + retry = 1; + break; } } #endif @@ -2955,45 +3084,43 @@ readd: break; } #ifdef CONFIG_F2FS_FS_COMPRESSION -lock_page: +lock_folio: #endif - done_index = page->index; + done_index = folio->index; retry_write: - lock_page(page); + folio_lock(folio); - if (unlikely(page->mapping != mapping)) { + if (unlikely(folio->mapping != mapping)) { continue_unlock: - unlock_page(page); + folio_unlock(folio); continue; } - if (!PageDirty(page)) { + if (!folio_test_dirty(folio)) { /* someone wrote it for us */ goto continue_unlock; } - if (PageWriteback(page)) { - if (wbc->sync_mode != WB_SYNC_NONE) - f2fs_wait_on_page_writeback(page, - DATA, true, true); - else + if (folio_test_writeback(folio)) { + if (wbc->sync_mode == WB_SYNC_NONE) goto continue_unlock; + f2fs_folio_wait_writeback(folio, DATA, true, true); } - if (!clear_page_dirty_for_io(page)) + if (!folio_clear_dirty_for_io(folio)) goto continue_unlock; #ifdef CONFIG_F2FS_FS_COMPRESSION if (f2fs_compressed_file(inode)) { - get_page(page); - f2fs_compress_ctx_add_page(&cc, page); + folio_get(folio); + f2fs_compress_ctx_add_page(&cc, folio); continue; } #endif - ret = f2fs_write_single_data_page(page, &submitted, - &bio, &last_block, wbc, io_type, 0); - if (ret == AOP_WRITEPAGE_ACTIVATE) - unlock_page(page); + submitted = 0; + ret = f2fs_write_single_data_page(folio, + &submitted, &bio, &last_block, + wbc, io_type, 0, true); #ifdef CONFIG_F2FS_FS_COMPRESSION result: #endif @@ -3005,20 +3132,19 @@ result: * keep nr_to_write, since vfs uses this to * get # of written pages. */ - if (ret == AOP_WRITEPAGE_ACTIVATE) { + if (ret == 1) { ret = 0; goto next; } else if (ret == -EAGAIN) { ret = 0; if (wbc->sync_mode == WB_SYNC_ALL) { - cond_resched(); - congestion_wait(BLK_RW_ASYNC, - DEFAULT_IO_TIMEOUT); + f2fs_schedule_timeout( + DEFAULT_SCHEDULE_TIMEOUT); goto retry_write; } goto next; } - done_index = page->index + 1; + done_index = folio_next_index(folio); done = 1; break; } @@ -3032,7 +3158,7 @@ next: if (need_readd) goto readd; } - pagevec_release(&pvec); + release_pages(pages, nr_pages); cond_resched(); } #ifdef CONFIG_F2FS_FS_COMPRESSION @@ -3046,6 +3172,8 @@ next: retry = 0; } } + if (f2fs_compressed_file(inode)) + f2fs_destroy_compress_ctx(&cc, false); #endif if (retry) { index = 0; @@ -3064,6 +3192,11 @@ next: if (bio) f2fs_submit_merged_ipu_write(sbi, &bio, NULL); +#ifdef CONFIG_F2FS_FS_COMPRESSION + if (pages != pages_local) + kfree(pages); +#endif + return ret; } @@ -3071,7 +3204,7 @@ static inline bool __should_serialize_io(struct inode *inode, struct writeback_control *wbc) { /* to avoid deadlock in path of data flush */ - if (F2FS_I(inode)->cp_task) + if (F2FS_I(inode)->wb_task) return false; if (!S_ISREG(inode->i_mode)) @@ -3079,7 +3212,7 @@ static inline bool __should_serialize_io(struct inode *inode, if (IS_NOQUOTA(inode)) return false; - if (f2fs_compressed_file(inode)) + if (f2fs_need_compress_data(inode)) return true; if (wbc->sync_mode != WB_SYNC_ALL) return true; @@ -3088,6 +3221,19 @@ static inline bool __should_serialize_io(struct inode *inode, return false; } +static inline void account_writeback(struct inode *inode, bool inc) +{ + if (!f2fs_sb_has_compression(F2FS_I_SB(inode))) + return; + + f2fs_down_read(&F2FS_I(inode)->i_sem); + if (inc) + atomic_inc(&F2FS_I(inode)->writeback); + else + atomic_dec(&F2FS_I(inode)->writeback); + f2fs_up_read(&F2FS_I(inode)->i_sem); +} + static int __f2fs_write_data_pages(struct address_space *mapping, struct writeback_control *wbc, enum iostat_type io_type) @@ -3098,10 +3244,6 @@ static int __f2fs_write_data_pages(struct address_space *mapping, int ret; bool locked = false; - /* deal with chardevs and other special file */ - if (!mapping->a_ops->writepage) - return 0; - /* skip writing if there is no dirty page in this inode */ if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) return 0; @@ -3116,8 +3258,8 @@ static int __f2fs_write_data_pages(struct address_space *mapping, f2fs_available_free_memory(sbi, DIRTY_DENTS)) goto skip_write; - /* skip writing during file defragment */ - if (is_inode_flag_set(inode, FI_DO_DEFRAG)) + /* skip writing in file defragment preparing stage */ + if (is_inode_flag_set(inode, FI_SKIP_WRITES)) goto skip_write; trace_f2fs_writepages(mapping->host, wbc, DATA); @@ -3125,18 +3267,26 @@ static int __f2fs_write_data_pages(struct address_space *mapping, /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ if (wbc->sync_mode == WB_SYNC_ALL) atomic_inc(&sbi->wb_sync_req[DATA]); - else if (atomic_read(&sbi->wb_sync_req[DATA])) + else if (atomic_read(&sbi->wb_sync_req[DATA])) { + /* to avoid potential deadlock */ + if (current->plug) + blk_finish_plug(current->plug); goto skip_write; + } if (__should_serialize_io(inode, wbc)) { mutex_lock(&sbi->writepages); locked = true; } + account_writeback(inode, true); + blk_start_plug(&plug); ret = f2fs_write_cache_pages(mapping, wbc, io_type); blk_finish_plug(&plug); + account_writeback(inode, false); + if (locked) mutex_unlock(&sbi->writepages); @@ -3166,9 +3316,8 @@ static int f2fs_write_data_pages(struct address_space *mapping, FS_CP_DATA_IO : FS_DATA_IO); } -static void f2fs_write_failed(struct address_space *mapping, loff_t to) +void f2fs_write_failed(struct inode *inode, loff_t to) { - struct inode *inode = mapping->host; loff_t i_size = i_size_read(inode); if (IS_NOQUOTA(inode)) @@ -3176,135 +3325,230 @@ static void f2fs_write_failed(struct address_space *mapping, loff_t to) /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */ if (to > i_size && !f2fs_verity_in_progress(inode)) { - down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); - down_write(&F2FS_I(inode)->i_mmap_sem); + f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); + filemap_invalidate_lock(inode->i_mapping); truncate_pagecache(inode, i_size); f2fs_truncate_blocks(inode, i_size, true); - up_write(&F2FS_I(inode)->i_mmap_sem); - up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); + filemap_invalidate_unlock(inode->i_mapping); + f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); } } static int prepare_write_begin(struct f2fs_sb_info *sbi, - struct page *page, loff_t pos, unsigned len, + struct folio *folio, loff_t pos, unsigned int len, block_t *blk_addr, bool *node_changed) { - struct inode *inode = page->mapping->host; - pgoff_t index = page->index; + struct inode *inode = folio->mapping->host; + pgoff_t index = folio->index; struct dnode_of_data dn; - struct page *ipage; + struct folio *ifolio; bool locked = false; - struct extent_info ei = {0,0,0}; + int flag = F2FS_GET_BLOCK_PRE_AIO; int err = 0; - int flag; /* - * we already allocated all the blocks, so we don't need to get - * the block addresses when there is no need to fill the page. + * If a whole page is being written and we already preallocated all the + * blocks, then there is no need to get a block address now. */ - if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE && - !is_inode_flag_set(inode, FI_NO_PREALLOC) && - !f2fs_verity_in_progress(inode)) + if (len == PAGE_SIZE && is_inode_flag_set(inode, FI_PREALLOCATED_ALL)) return 0; /* f2fs_lock_op avoids race between write CP and convert_inline_page */ - if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) - flag = F2FS_GET_BLOCK_DEFAULT; - else - flag = F2FS_GET_BLOCK_PRE_AIO; - - if (f2fs_has_inline_data(inode) || - (pos & PAGE_MASK) >= i_size_read(inode)) { - __do_map_lock(sbi, flag, true); + if (f2fs_has_inline_data(inode)) { + if (pos + len > MAX_INLINE_DATA(inode)) + flag = F2FS_GET_BLOCK_DEFAULT; + f2fs_map_lock(sbi, flag); + locked = true; + } else if ((pos & PAGE_MASK) >= i_size_read(inode)) { + f2fs_map_lock(sbi, flag); locked = true; } restart: /* check inline_data */ - ipage = f2fs_get_node_page(sbi, inode->i_ino); - if (IS_ERR(ipage)) { - err = PTR_ERR(ipage); + ifolio = f2fs_get_inode_folio(sbi, inode->i_ino); + if (IS_ERR(ifolio)) { + err = PTR_ERR(ifolio); goto unlock_out; } - set_new_dnode(&dn, inode, ipage, ipage, 0); + set_new_dnode(&dn, inode, ifolio, ifolio, 0); if (f2fs_has_inline_data(inode)) { if (pos + len <= MAX_INLINE_DATA(inode)) { - f2fs_do_read_inline_data(page, ipage); + f2fs_do_read_inline_data(folio, ifolio); set_inode_flag(inode, FI_DATA_EXIST); if (inode->i_nlink) - set_inline_node(ipage); - } else { - err = f2fs_convert_inline_page(&dn, page); - if (err) - goto out; - if (dn.data_blkaddr == NULL_ADDR) - err = f2fs_get_block(&dn, index); + folio_set_f2fs_inline(ifolio); + goto out; } - } else if (locked) { - err = f2fs_get_block(&dn, index); - } else { - if (f2fs_lookup_extent_cache(inode, index, &ei)) { - dn.data_blkaddr = ei.blk + index - ei.fofs; - } else { - /* hole case */ - err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); - if (err || dn.data_blkaddr == NULL_ADDR) { - f2fs_put_dnode(&dn); - __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, - true); - WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); - locked = true; - goto restart; - } + err = f2fs_convert_inline_folio(&dn, folio); + if (err || dn.data_blkaddr != NULL_ADDR) + goto out; + } + + if (!f2fs_lookup_read_extent_cache_block(inode, index, + &dn.data_blkaddr)) { + if (IS_DEVICE_ALIASING(inode)) { + err = -ENODATA; + goto out; + } + + if (locked) { + err = f2fs_reserve_block(&dn, index); + goto out; + } + + /* hole case */ + err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); + if (!err && dn.data_blkaddr != NULL_ADDR) + goto out; + f2fs_put_dnode(&dn); + f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO); + WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); + locked = true; + goto restart; + } +out: + if (!err) { + /* convert_inline_page can make node_changed */ + *blk_addr = dn.data_blkaddr; + *node_changed = dn.node_changed; + } + f2fs_put_dnode(&dn); +unlock_out: + if (locked) + f2fs_map_unlock(sbi, flag); + return err; +} + +static int __find_data_block(struct inode *inode, pgoff_t index, + block_t *blk_addr) +{ + struct dnode_of_data dn; + struct folio *ifolio; + int err = 0; + + ifolio = f2fs_get_inode_folio(F2FS_I_SB(inode), inode->i_ino); + if (IS_ERR(ifolio)) + return PTR_ERR(ifolio); + + set_new_dnode(&dn, inode, ifolio, ifolio, 0); + + if (!f2fs_lookup_read_extent_cache_block(inode, index, + &dn.data_blkaddr)) { + /* hole case */ + err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); + if (err) { + dn.data_blkaddr = NULL_ADDR; + err = 0; } } + *blk_addr = dn.data_blkaddr; + f2fs_put_dnode(&dn); + return err; +} + +static int __reserve_data_block(struct inode *inode, pgoff_t index, + block_t *blk_addr, bool *node_changed) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct dnode_of_data dn; + struct folio *ifolio; + int err = 0; + + f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO); + + ifolio = f2fs_get_inode_folio(sbi, inode->i_ino); + if (IS_ERR(ifolio)) { + err = PTR_ERR(ifolio); + goto unlock_out; + } + set_new_dnode(&dn, inode, ifolio, ifolio, 0); + + if (!f2fs_lookup_read_extent_cache_block(dn.inode, index, + &dn.data_blkaddr)) + err = f2fs_reserve_block(&dn, index); - /* convert_inline_page can make node_changed */ *blk_addr = dn.data_blkaddr; *node_changed = dn.node_changed; -out: f2fs_put_dnode(&dn); + unlock_out: - if (locked) - __do_map_lock(sbi, flag, false); + f2fs_map_unlock(sbi, F2FS_GET_BLOCK_PRE_AIO); return err; } -static int f2fs_write_begin(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, - struct page **pagep, void **fsdata) +static int prepare_atomic_write_begin(struct f2fs_sb_info *sbi, + struct folio *folio, loff_t pos, unsigned int len, + block_t *blk_addr, bool *node_changed, bool *use_cow) +{ + struct inode *inode = folio->mapping->host; + struct inode *cow_inode = F2FS_I(inode)->cow_inode; + pgoff_t index = folio->index; + int err = 0; + block_t ori_blk_addr = NULL_ADDR; + + /* If pos is beyond the end of file, reserve a new block in COW inode */ + if ((pos & PAGE_MASK) >= i_size_read(inode)) + goto reserve_block; + + /* Look for the block in COW inode first */ + err = __find_data_block(cow_inode, index, blk_addr); + if (err) { + return err; + } else if (*blk_addr != NULL_ADDR) { + *use_cow = true; + return 0; + } + + if (is_inode_flag_set(inode, FI_ATOMIC_REPLACE)) + goto reserve_block; + + /* Look for the block in the original inode */ + err = __find_data_block(inode, index, &ori_blk_addr); + if (err) + return err; + +reserve_block: + /* Finally, we should reserve a new block in COW inode for the update */ + err = __reserve_data_block(cow_inode, index, blk_addr, node_changed); + if (err) + return err; + inc_atomic_write_cnt(inode); + + if (ori_blk_addr != NULL_ADDR) + *blk_addr = ori_blk_addr; + return 0; +} + +static int f2fs_write_begin(const struct kiocb *iocb, + struct address_space *mapping, + loff_t pos, unsigned len, struct folio **foliop, + void **fsdata) { struct inode *inode = mapping->host; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - struct page *page = NULL; - pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; - bool need_balance = false, drop_atomic = false; + struct folio *folio; + pgoff_t index = pos >> PAGE_SHIFT; + bool need_balance = false; + bool use_cow = false; block_t blkaddr = NULL_ADDR; int err = 0; - trace_f2fs_write_begin(inode, pos, len, flags); + trace_f2fs_write_begin(inode, pos, len); if (!f2fs_is_checkpoint_ready(sbi)) { err = -ENOSPC; goto fail; } - if ((f2fs_is_atomic_file(inode) && - !f2fs_available_free_memory(sbi, INMEM_PAGES)) || - is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { - err = -ENOMEM; - drop_atomic = true; - goto fail; - } - /* * We should check this at this moment to avoid deadlock on inode page * and #0 page. The locking rule for inline_data conversion should be: - * lock_page(page #0) -> lock_page(inode_page) + * folio_lock(folio #0) -> folio_lock(inode_page) */ if (index != 0) { err = f2fs_convert_inline_inode(inode); @@ -3315,15 +3559,20 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping, #ifdef CONFIG_F2FS_FS_COMPRESSION if (f2fs_compressed_file(inode)) { int ret; + struct page *page; *fsdata = NULL; - ret = f2fs_prepare_compress_overwrite(inode, pagep, + if (len == PAGE_SIZE && !(f2fs_is_atomic_file(inode))) + goto repeat; + + ret = f2fs_prepare_compress_overwrite(inode, &page, index, fsdata); if (ret < 0) { err = ret; goto fail; } else if (ret) { + *foliop = page_folio(page); return 0; } } @@ -3331,87 +3580,93 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping, repeat: /* - * Do not use grab_cache_page_write_begin() to avoid deadlock due to - * wait_for_stable_page. Will wait that below with our IO control. + * Do not use FGP_STABLE to avoid deadlock. + * Will wait that below with our IO control. */ - page = f2fs_pagecache_get_page(mapping, index, - FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); - if (!page) { - err = -ENOMEM; + folio = f2fs_filemap_get_folio(mapping, index, + FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_NOFS, + mapping_gfp_mask(mapping)); + if (IS_ERR(folio)) { + err = PTR_ERR(folio); goto fail; } /* TODO: cluster can be compressed due to race with .writepage */ - *pagep = page; + *foliop = folio; - err = prepare_write_begin(sbi, page, pos, len, + if (f2fs_is_atomic_file(inode)) + err = prepare_atomic_write_begin(sbi, folio, pos, len, + &blkaddr, &need_balance, &use_cow); + else + err = prepare_write_begin(sbi, folio, pos, len, &blkaddr, &need_balance); if (err) - goto fail; + goto put_folio; if (need_balance && !IS_NOQUOTA(inode) && has_not_enough_free_secs(sbi, 0, 0)) { - unlock_page(page); + folio_unlock(folio); f2fs_balance_fs(sbi, true); - lock_page(page); - if (page->mapping != mapping) { - /* The page got truncated from under us */ - f2fs_put_page(page, 1); + folio_lock(folio); + if (folio->mapping != mapping) { + /* The folio got truncated from under us */ + folio_unlock(folio); + folio_put(folio); goto repeat; } } - f2fs_wait_on_page_writeback(page, DATA, false, true); + f2fs_folio_wait_writeback(folio, DATA, false, true); - if (len == PAGE_SIZE || PageUptodate(page)) + if (len == folio_size(folio) || folio_test_uptodate(folio)) return 0; if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) && !f2fs_verity_in_progress(inode)) { - zero_user_segment(page, len, PAGE_SIZE); + folio_zero_segment(folio, len, folio_size(folio)); return 0; } if (blkaddr == NEW_ADDR) { - zero_user_segment(page, 0, PAGE_SIZE); - SetPageUptodate(page); + folio_zero_segment(folio, 0, folio_size(folio)); + folio_mark_uptodate(folio); } else { if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE_READ)) { err = -EFSCORRUPTED; - goto fail; + goto put_folio; } - err = f2fs_submit_page_read(inode, page, blkaddr, true); - if (err) - goto fail; - - lock_page(page); - if (unlikely(page->mapping != mapping)) { - f2fs_put_page(page, 1); + f2fs_submit_page_read(use_cow ? + F2FS_I(inode)->cow_inode : inode, + folio, blkaddr, 0, true); + + folio_lock(folio); + if (unlikely(folio->mapping != mapping)) { + folio_unlock(folio); + folio_put(folio); goto repeat; } - if (unlikely(!PageUptodate(page))) { + if (unlikely(!folio_test_uptodate(folio))) { err = -EIO; - goto fail; + goto put_folio; } } return 0; +put_folio: + f2fs_folio_put(folio, true); fail: - f2fs_put_page(page, 1); - f2fs_write_failed(mapping, pos + len); - if (drop_atomic) - f2fs_drop_inmem_pages_all(sbi, false); + f2fs_write_failed(inode, pos + len); return err; } -static int f2fs_write_end(struct file *file, +static int f2fs_write_end(const struct kiocb *iocb, struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, - struct page *page, void *fsdata) + struct folio *folio, void *fsdata) { - struct inode *inode = page->mapping->host; + struct inode *inode = folio->mapping->host; trace_f2fs_write_end(inode, pos, len, copied); @@ -3420,18 +3675,22 @@ static int f2fs_write_end(struct file *file, * should be PAGE_SIZE. Otherwise, we treat it with zero copied and * let generic_perform_write() try to copy data again through copied=0. */ - if (!PageUptodate(page)) { + if (!folio_test_uptodate(folio)) { if (unlikely(copied != len)) copied = 0; else - SetPageUptodate(page); + folio_mark_uptodate(folio); } #ifdef CONFIG_F2FS_FS_COMPRESSION /* overwrite compressed file */ if (f2fs_compressed_file(inode) && fsdata) { - f2fs_compress_write_end(inode, fsdata, page->index, copied); + f2fs_compress_write_end(inode, fsdata, folio->index, copied); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); + + if (pos + copied > i_size_read(inode) && + !f2fs_verity_in_progress(inode)) + f2fs_i_size_write(inode, pos + copied); return copied; } #endif @@ -3439,171 +3698,34 @@ static int f2fs_write_end(struct file *file, if (!copied) goto unlock_out; - set_page_dirty(page); + folio_mark_dirty(folio); + + if (f2fs_is_atomic_file(inode)) + folio_set_f2fs_atomic(folio); if (pos + copied > i_size_read(inode) && - !f2fs_verity_in_progress(inode)) + !f2fs_verity_in_progress(inode)) { f2fs_i_size_write(inode, pos + copied); + if (f2fs_is_atomic_file(inode)) + f2fs_i_size_write(F2FS_I(inode)->cow_inode, + pos + copied); + } unlock_out: - f2fs_put_page(page, 1); + f2fs_folio_put(folio, true); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); return copied; } -static int check_direct_IO(struct inode *inode, struct iov_iter *iter, - loff_t offset) -{ - unsigned i_blkbits = READ_ONCE(inode->i_blkbits); - unsigned blkbits = i_blkbits; - unsigned blocksize_mask = (1 << blkbits) - 1; - unsigned long align = offset | iov_iter_alignment(iter); - struct block_device *bdev = inode->i_sb->s_bdev; - - if (align & blocksize_mask) { - if (bdev) - blkbits = blksize_bits(bdev_logical_block_size(bdev)); - blocksize_mask = (1 << blkbits) - 1; - if (align & blocksize_mask) - return -EINVAL; - return 1; - } - return 0; -} - -static void f2fs_dio_end_io(struct bio *bio) +void f2fs_invalidate_folio(struct folio *folio, size_t offset, size_t length) { - struct f2fs_private_dio *dio = bio->bi_private; - - dec_page_count(F2FS_I_SB(dio->inode), - dio->write ? F2FS_DIO_WRITE : F2FS_DIO_READ); - - bio->bi_private = dio->orig_private; - bio->bi_end_io = dio->orig_end_io; - - kvfree(dio); - - bio_endio(bio); -} - -static void f2fs_dio_submit_bio(struct bio *bio, struct inode *inode, - loff_t file_offset) -{ - struct f2fs_private_dio *dio; - bool write = (bio_op(bio) == REQ_OP_WRITE); - - dio = f2fs_kzalloc(F2FS_I_SB(inode), - sizeof(struct f2fs_private_dio), GFP_NOFS); - if (!dio) - goto out; - - dio->inode = inode; - dio->orig_end_io = bio->bi_end_io; - dio->orig_private = bio->bi_private; - dio->write = write; - - bio->bi_end_io = f2fs_dio_end_io; - bio->bi_private = dio; - - inc_page_count(F2FS_I_SB(inode), - write ? F2FS_DIO_WRITE : F2FS_DIO_READ); - - submit_bio(bio); - return; -out: - bio->bi_status = BLK_STS_IOERR; - bio_endio(bio); -} - -static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) -{ - struct address_space *mapping = iocb->ki_filp->f_mapping; - struct inode *inode = mapping->host; - struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - struct f2fs_inode_info *fi = F2FS_I(inode); - size_t count = iov_iter_count(iter); - loff_t offset = iocb->ki_pos; - int rw = iov_iter_rw(iter); - int err; - enum rw_hint hint = iocb->ki_hint; - int whint_mode = F2FS_OPTION(sbi).whint_mode; - bool do_opu; - - err = check_direct_IO(inode, iter, offset); - if (err) - return err < 0 ? err : 0; - - if (f2fs_force_buffered_io(inode, iocb, iter)) - return 0; - - do_opu = allow_outplace_dio(inode, iocb, iter); - - trace_f2fs_direct_IO_enter(inode, offset, count, rw); - - if (rw == WRITE && whint_mode == WHINT_MODE_OFF) - iocb->ki_hint = WRITE_LIFE_NOT_SET; - - if (iocb->ki_flags & IOCB_NOWAIT) { - if (!down_read_trylock(&fi->i_gc_rwsem[rw])) { - iocb->ki_hint = hint; - err = -EAGAIN; - goto out; - } - if (do_opu && !down_read_trylock(&fi->i_gc_rwsem[READ])) { - up_read(&fi->i_gc_rwsem[rw]); - iocb->ki_hint = hint; - err = -EAGAIN; - goto out; - } - } else { - down_read(&fi->i_gc_rwsem[rw]); - if (do_opu) - down_read(&fi->i_gc_rwsem[READ]); - } - - err = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, - iter, rw == WRITE ? get_data_block_dio_write : - get_data_block_dio, NULL, f2fs_dio_submit_bio, - rw == WRITE ? DIO_LOCKING | DIO_SKIP_HOLES : - DIO_SKIP_HOLES); - - if (do_opu) - up_read(&fi->i_gc_rwsem[READ]); - - up_read(&fi->i_gc_rwsem[rw]); - - if (rw == WRITE) { - if (whint_mode == WHINT_MODE_OFF) - iocb->ki_hint = hint; - if (err > 0) { - f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO, - err); - if (!do_opu) - set_inode_flag(inode, FI_UPDATE_WRITE); - } else if (err < 0) { - f2fs_write_failed(mapping, offset + count); - } - } else { - if (err > 0) - f2fs_update_iostat(sbi, APP_DIRECT_READ_IO, err); - } - -out: - trace_f2fs_direct_IO_exit(inode, offset, count, rw, err); - - return err; -} - -void f2fs_invalidate_page(struct page *page, unsigned int offset, - unsigned int length) -{ - struct inode *inode = page->mapping->host; + struct inode *inode = folio->mapping->host; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); if (inode->i_ino >= F2FS_ROOT_INO(sbi) && - (offset % PAGE_SIZE || length != PAGE_SIZE)) + (offset || length != folio_size(folio))) return; - if (PageDirty(page)) { + if (folio_test_dirty(folio)) { if (inode->i_ino == F2FS_META_INO(sbi)) { dec_page_count(sbi, F2FS_DIRTY_META); } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { @@ -3613,59 +3735,35 @@ void f2fs_invalidate_page(struct page *page, unsigned int offset, f2fs_remove_dirty_inode(inode); } } - - clear_cold_data(page); - - if (IS_ATOMIC_WRITTEN_PAGE(page)) - return f2fs_drop_inmem_page(inode, page); - - f2fs_clear_page_private(page); + folio_detach_private(folio); } -int f2fs_release_page(struct page *page, gfp_t wait) +bool f2fs_release_folio(struct folio *folio, gfp_t wait) { - /* If this is dirty page, keep PagePrivate */ - if (PageDirty(page)) - return 0; - - /* This is atomic written page, keep Private */ - if (IS_ATOMIC_WRITTEN_PAGE(page)) - return 0; + /* If this is dirty folio, keep private data */ + if (folio_test_dirty(folio)) + return false; - clear_cold_data(page); - f2fs_clear_page_private(page); - return 1; + folio_detach_private(folio); + return true; } -static int f2fs_set_data_page_dirty(struct page *page) +static bool f2fs_dirty_data_folio(struct address_space *mapping, + struct folio *folio) { - struct inode *inode = page_file_mapping(page)->host; - - trace_f2fs_set_page_dirty(page, DATA); + struct inode *inode = mapping->host; - if (!PageUptodate(page)) - SetPageUptodate(page); - if (PageSwapCache(page)) - return __set_page_dirty_nobuffers(page); + trace_f2fs_set_page_dirty(folio, DATA); - if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) { - if (!IS_ATOMIC_WRITTEN_PAGE(page)) { - f2fs_register_inmem_page(inode, page); - return 1; - } - /* - * Previously, this page has been registered, we just - * return here. - */ - return 0; - } + if (!folio_test_uptodate(folio)) + folio_mark_uptodate(folio); + BUG_ON(folio_test_swapcache(folio)); - if (!PageDirty(page)) { - __set_page_dirty_nobuffers(page); - f2fs_update_dirty_page(inode, page); - return 1; + if (filemap_dirty_folio(mapping, folio)) { + f2fs_update_dirty_folio(inode, folio); + return true; } - return 0; + return false; } @@ -3691,10 +3789,9 @@ static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block) } f2fs_put_dnode(&dn); - return blknr; #else - return -EOPNOTSUPP; + return 0; #endif } @@ -3702,202 +3799,260 @@ static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block) static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) { struct inode *inode = mapping->host; + sector_t blknr = 0; if (f2fs_has_inline_data(inode)) - return 0; + goto out; /* make sure allocating whole blocks */ if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) filemap_write_and_wait(mapping); - if (f2fs_compressed_file(inode)) - return f2fs_bmap_compress(inode, block); + /* Block number less than F2FS MAX BLOCKS */ + if (unlikely(block >= max_file_blocks(inode))) + goto out; - return generic_block_bmap(mapping, block, get_data_block_bmap); -} + if (f2fs_compressed_file(inode)) { + blknr = f2fs_bmap_compress(inode, block); + } else { + struct f2fs_map_blocks map; + + memset(&map, 0, sizeof(map)); + map.m_lblk = block; + map.m_len = 1; + map.m_next_pgofs = NULL; + map.m_seg_type = NO_CHECK_TYPE; -#ifdef CONFIG_MIGRATION -#include <linux/migrate.h> + if (!f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_BMAP)) + blknr = map.m_pblk; + } +out: + trace_f2fs_bmap(inode, block, blknr); + return blknr; +} -int f2fs_migrate_page(struct address_space *mapping, - struct page *newpage, struct page *page, enum migrate_mode mode) +#ifdef CONFIG_SWAP +static int f2fs_migrate_blocks(struct inode *inode, block_t start_blk, + unsigned int blkcnt) { - int rc, extra_count; - struct f2fs_inode_info *fi = F2FS_I(mapping->host); - bool atomic_written = IS_ATOMIC_WRITTEN_PAGE(page); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + unsigned int blkofs; + unsigned int blk_per_sec = BLKS_PER_SEC(sbi); + unsigned int end_blk = start_blk + blkcnt - 1; + unsigned int secidx = start_blk / blk_per_sec; + unsigned int end_sec; + int ret = 0; - BUG_ON(PageWriteback(page)); + if (!blkcnt) + return 0; + end_sec = end_blk / blk_per_sec; - /* migrating an atomic written page is safe with the inmem_lock hold */ - if (atomic_written) { - if (mode != MIGRATE_SYNC) - return -EBUSY; - if (!mutex_trylock(&fi->inmem_lock)) - return -EAGAIN; - } + f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); + filemap_invalidate_lock(inode->i_mapping); - /* one extra reference was held for atomic_write page */ - extra_count = atomic_written ? 1 : 0; - rc = migrate_page_move_mapping(mapping, newpage, - page, extra_count); - if (rc != MIGRATEPAGE_SUCCESS) { - if (atomic_written) - mutex_unlock(&fi->inmem_lock); - return rc; - } + set_inode_flag(inode, FI_ALIGNED_WRITE); + set_inode_flag(inode, FI_OPU_WRITE); - if (atomic_written) { - struct inmem_pages *cur; - list_for_each_entry(cur, &fi->inmem_pages, list) - if (cur->page == page) { - cur->page = newpage; - break; + for (; secidx <= end_sec; secidx++) { + unsigned int blkofs_end = secidx == end_sec ? + end_blk % blk_per_sec : blk_per_sec - 1; + + f2fs_down_write(&sbi->pin_sem); + + ret = f2fs_allocate_pinning_section(sbi); + if (ret) { + f2fs_up_write(&sbi->pin_sem); + break; + } + + set_inode_flag(inode, FI_SKIP_WRITES); + + for (blkofs = 0; blkofs <= blkofs_end; blkofs++) { + struct folio *folio; + unsigned int blkidx = secidx * blk_per_sec + blkofs; + + folio = f2fs_get_lock_data_folio(inode, blkidx, true); + if (IS_ERR(folio)) { + f2fs_up_write(&sbi->pin_sem); + ret = PTR_ERR(folio); + goto done; } - mutex_unlock(&fi->inmem_lock); - put_page(page); - get_page(newpage); - } - if (PagePrivate(page)) { - f2fs_set_page_private(newpage, page_private(page)); - f2fs_clear_page_private(page); + folio_mark_dirty(folio); + f2fs_folio_put(folio, true); + } + + clear_inode_flag(inode, FI_SKIP_WRITES); + + ret = filemap_fdatawrite(inode->i_mapping); + + f2fs_up_write(&sbi->pin_sem); + + if (ret) + break; } - if (mode != MIGRATE_SYNC_NO_COPY) - migrate_page_copy(newpage, page); - else - migrate_page_states(newpage, page); +done: + clear_inode_flag(inode, FI_SKIP_WRITES); + clear_inode_flag(inode, FI_OPU_WRITE); + clear_inode_flag(inode, FI_ALIGNED_WRITE); + + filemap_invalidate_unlock(inode->i_mapping); + f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); - return MIGRATEPAGE_SUCCESS; + return ret; } -#endif -#ifdef CONFIG_SWAP -/* Copied from generic_swapfile_activate() to check any holes */ static int check_swap_activate(struct swap_info_struct *sis, struct file *swap_file, sector_t *span) { struct address_space *mapping = swap_file->f_mapping; struct inode *inode = mapping->host; - unsigned blocks_per_page; - unsigned long page_no; - unsigned blkbits; - sector_t probe_block; - sector_t last_block; - sector_t lowest_block = -1; - sector_t highest_block = 0; + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + block_t cur_lblock; + block_t last_lblock; + block_t pblock; + block_t lowest_pblock = -1; + block_t highest_pblock = 0; int nr_extents = 0; - int ret; - - blkbits = inode->i_blkbits; - blocks_per_page = PAGE_SIZE >> blkbits; + unsigned int nr_pblocks; + unsigned int blks_per_sec = BLKS_PER_SEC(sbi); + unsigned int not_aligned = 0; + int ret = 0; /* * Map all the blocks into the extent list. This code doesn't try * to be very smart. */ - probe_block = 0; - page_no = 0; - last_block = i_size_read(inode) >> blkbits; - while ((probe_block + blocks_per_page) <= last_block && - page_no < sis->max) { - unsigned block_in_page; - sector_t first_block; - sector_t block = 0; - int err = 0; + cur_lblock = 0; + last_lblock = F2FS_BYTES_TO_BLK(i_size_read(inode)); + while (cur_lblock < last_lblock && cur_lblock < sis->max) { + struct f2fs_map_blocks map; +retry: cond_resched(); - block = probe_block; - err = bmap(inode, &block); - if (err || !block) - goto bad_bmap; - first_block = block; + memset(&map, 0, sizeof(map)); + map.m_lblk = cur_lblock; + map.m_len = last_lblock - cur_lblock; + map.m_next_pgofs = NULL; + map.m_next_extent = NULL; + map.m_seg_type = NO_CHECK_TYPE; + map.m_may_create = false; - /* - * It must be PAGE_SIZE aligned on-disk - */ - if (first_block & (blocks_per_page - 1)) { - probe_block++; - goto reprobe; + ret = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_FIEMAP); + if (ret) + goto out; + + /* hole */ + if (!(map.m_flags & F2FS_MAP_FLAGS)) { + f2fs_err(sbi, "Swapfile has holes"); + ret = -EINVAL; + goto out; } - for (block_in_page = 1; block_in_page < blocks_per_page; - block_in_page++) { + pblock = map.m_pblk; + nr_pblocks = map.m_len; + + if ((pblock - SM_I(sbi)->main_blkaddr) % blks_per_sec || + nr_pblocks % blks_per_sec || + f2fs_is_sequential_zone_area(sbi, pblock)) { + bool last_extent = false; - block = probe_block + block_in_page; - err = bmap(inode, &block); + not_aligned++; - if (err || !block) - goto bad_bmap; + nr_pblocks = roundup(nr_pblocks, blks_per_sec); + if (cur_lblock + nr_pblocks > sis->max) + nr_pblocks -= blks_per_sec; - if (block != first_block + block_in_page) { - /* Discontiguity */ - probe_block++; - goto reprobe; + /* this extent is last one */ + if (!nr_pblocks) { + nr_pblocks = last_lblock - cur_lblock; + last_extent = true; } + + ret = f2fs_migrate_blocks(inode, cur_lblock, + nr_pblocks); + if (ret) { + if (ret == -ENOENT) + ret = -EINVAL; + goto out; + } + + if (!last_extent) + goto retry; } - first_block >>= (PAGE_SHIFT - blkbits); - if (page_no) { /* exclude the header page */ - if (first_block < lowest_block) - lowest_block = first_block; - if (first_block > highest_block) - highest_block = first_block; + if (cur_lblock + nr_pblocks >= sis->max) + nr_pblocks = sis->max - cur_lblock; + + if (cur_lblock) { /* exclude the header page */ + if (pblock < lowest_pblock) + lowest_pblock = pblock; + if (pblock + nr_pblocks - 1 > highest_pblock) + highest_pblock = pblock + nr_pblocks - 1; } /* * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks */ - ret = add_swap_extent(sis, page_no, 1, first_block); + ret = add_swap_extent(sis, cur_lblock, nr_pblocks, pblock); if (ret < 0) goto out; nr_extents += ret; - page_no++; - probe_block += blocks_per_page; -reprobe: - continue; + cur_lblock += nr_pblocks; } ret = nr_extents; - *span = 1 + highest_block - lowest_block; - if (page_no == 0) - page_no = 1; /* force Empty message */ - sis->max = page_no; - sis->pages = page_no - 1; - sis->highest_bit = page_no - 1; + *span = 1 + highest_pblock - lowest_pblock; + if (cur_lblock == 0) + cur_lblock = 1; /* force Empty message */ + sis->max = cur_lblock; + sis->pages = cur_lblock - 1; out: + if (not_aligned) + f2fs_warn(sbi, "Swapfile (%u) is not align to section: 1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate(%lu * N)", + not_aligned, blks_per_sec * F2FS_BLKSIZE); return ret; -bad_bmap: - pr_err("swapon: swapfile has holes\n"); - return -EINVAL; } static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, sector_t *span) { struct inode *inode = file_inode(file); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); int ret; if (!S_ISREG(inode->i_mode)) return -EINVAL; - if (f2fs_readonly(F2FS_I_SB(inode)->sb)) + if (f2fs_readonly(sbi->sb)) return -EROFS; + if (f2fs_lfs_mode(sbi) && !f2fs_sb_has_blkzoned(sbi)) { + f2fs_err(sbi, "Swapfile not supported in LFS mode"); + return -EINVAL; + } + ret = f2fs_convert_inline_inode(inode); if (ret) return ret; - if (f2fs_disable_compressed_file(inode)) + if (!f2fs_disable_compressed_file(inode)) return -EINVAL; + ret = filemap_fdatawrite(inode->i_mapping); + if (ret < 0) + return ret; + + f2fs_precache_extents(inode); + ret = check_swap_activate(sis, file, span); if (ret < 0) return ret; + stat_inc_swapfile_inode(inode); set_inode_flag(inode, FI_PIN_FILE); - f2fs_precache_extents(inode); - f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); + f2fs_update_time(sbi, REQ_TIME); return ret; } @@ -3905,6 +4060,7 @@ static void f2fs_swap_deactivate(struct file *file) { struct inode *inode = file_inode(file); + stat_dec_swapfile_inode(inode); clear_inode_flag(inode, FI_PIN_FILE); } #else @@ -3920,31 +4076,27 @@ static void f2fs_swap_deactivate(struct file *file) #endif const struct address_space_operations f2fs_dblock_aops = { - .readpage = f2fs_read_data_page, + .read_folio = f2fs_read_data_folio, .readahead = f2fs_readahead, - .writepage = f2fs_write_data_page, .writepages = f2fs_write_data_pages, .write_begin = f2fs_write_begin, .write_end = f2fs_write_end, - .set_page_dirty = f2fs_set_data_page_dirty, - .invalidatepage = f2fs_invalidate_page, - .releasepage = f2fs_release_page, - .direct_IO = f2fs_direct_IO, + .dirty_folio = f2fs_dirty_data_folio, + .migrate_folio = filemap_migrate_folio, + .invalidate_folio = f2fs_invalidate_folio, + .release_folio = f2fs_release_folio, .bmap = f2fs_bmap, .swap_activate = f2fs_swap_activate, .swap_deactivate = f2fs_swap_deactivate, -#ifdef CONFIG_MIGRATION - .migratepage = f2fs_migrate_page, -#endif }; -void f2fs_clear_page_cache_dirty_tag(struct page *page) +void f2fs_clear_page_cache_dirty_tag(struct folio *folio) { - struct address_space *mapping = page_mapping(page); + struct address_space *mapping = folio->mapping; unsigned long flags; xa_lock_irqsave(&mapping->i_pages, flags); - __xa_clear_mark(&mapping->i_pages, page_index(page), + __xa_clear_mark(&mapping->i_pages, folio->index, PAGECACHE_TAG_DIRTY); xa_unlock_irqrestore(&mapping->i_pages, flags); } @@ -3985,9 +4137,7 @@ int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi) sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq", WQ_UNBOUND | WQ_HIGHPRI, num_online_cpus()); - if (!sbi->post_read_wq) - return -ENOMEM; - return 0; + return sbi->post_read_wq ? 0 : -ENOMEM; } void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi) @@ -4000,12 +4150,98 @@ int __init f2fs_init_bio_entry_cache(void) { bio_entry_slab = f2fs_kmem_cache_create("f2fs_bio_entry_slab", sizeof(struct bio_entry)); - if (!bio_entry_slab) - return -ENOMEM; - return 0; + return bio_entry_slab ? 0 : -ENOMEM; } void f2fs_destroy_bio_entry_cache(void) { kmem_cache_destroy(bio_entry_slab); } + +static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, + unsigned int flags, struct iomap *iomap, + struct iomap *srcmap) +{ + struct f2fs_map_blocks map = { NULL, }; + pgoff_t next_pgofs = 0; + int err; + + map.m_lblk = F2FS_BYTES_TO_BLK(offset); + map.m_len = F2FS_BYTES_TO_BLK(offset + length - 1) - map.m_lblk + 1; + map.m_next_pgofs = &next_pgofs; + map.m_seg_type = f2fs_rw_hint_to_seg_type(F2FS_I_SB(inode), + inode->i_write_hint); + if (flags & IOMAP_WRITE && iomap->private) { + map.m_last_pblk = (unsigned long)iomap->private; + iomap->private = NULL; + } + + /* + * If the blocks being overwritten are already allocated, + * f2fs_map_lock and f2fs_balance_fs are not necessary. + */ + if ((flags & IOMAP_WRITE) && + !f2fs_overwrite_io(inode, offset, length)) + map.m_may_create = true; + + err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DIO); + if (err) + return err; + + iomap->offset = F2FS_BLK_TO_BYTES(map.m_lblk); + + /* + * When inline encryption is enabled, sometimes I/O to an encrypted file + * has to be broken up to guarantee DUN contiguity. Handle this by + * limiting the length of the mapping returned. + */ + map.m_len = fscrypt_limit_io_blocks(inode, map.m_lblk, map.m_len); + + /* + * We should never see delalloc or compressed extents here based on + * prior flushing and checks. + */ + if (WARN_ON_ONCE(map.m_pblk == COMPRESS_ADDR)) + return -EINVAL; + + if (map.m_flags & F2FS_MAP_MAPPED) { + if (WARN_ON_ONCE(map.m_pblk == NEW_ADDR)) + return -EINVAL; + + iomap->length = F2FS_BLK_TO_BYTES(map.m_len); + iomap->type = IOMAP_MAPPED; + iomap->flags |= IOMAP_F_MERGED; + iomap->bdev = map.m_bdev; + iomap->addr = F2FS_BLK_TO_BYTES(map.m_pblk); + + if (flags & IOMAP_WRITE && map.m_last_pblk) + iomap->private = (void *)map.m_last_pblk; + } else { + if (flags & IOMAP_WRITE) + return -ENOTBLK; + + if (map.m_pblk == NULL_ADDR) { + iomap->length = F2FS_BLK_TO_BYTES(next_pgofs) - + iomap->offset; + iomap->type = IOMAP_HOLE; + } else if (map.m_pblk == NEW_ADDR) { + iomap->length = F2FS_BLK_TO_BYTES(map.m_len); + iomap->type = IOMAP_UNWRITTEN; + } else { + f2fs_bug_on(F2FS_I_SB(inode), 1); + } + iomap->addr = IOMAP_NULL_ADDR; + } + + if (map.m_flags & F2FS_MAP_NEW) + iomap->flags |= IOMAP_F_NEW; + if ((inode_state_read_once(inode) & I_DIRTY_DATASYNC) || + offset + length > i_size_read(inode)) + iomap->flags |= IOMAP_F_DIRTY; + + return 0; +} + +const struct iomap_ops f2fs_iomap_ops = { + .iomap_begin = f2fs_iomap_begin, +}; |