diff options
Diffstat (limited to 'fs/f2fs/inline.c')
| -rw-r--r-- | fs/f2fs/inline.c | 834 |
1 files changed, 834 insertions, 0 deletions
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c new file mode 100644 index 000000000000..e5c6a08b7e4f --- /dev/null +++ b/fs/f2fs/inline.c @@ -0,0 +1,834 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * fs/f2fs/inline.c + * Copyright (c) 2013, Intel Corporation + * Authors: Huajun Li <huajun.li@intel.com> + * Haicheng Li <haicheng.li@intel.com> + */ + +#include <linux/fs.h> +#include <linux/f2fs_fs.h> +#include <linux/fiemap.h> + +#include "f2fs.h" +#include "node.h" +#include <trace/events/f2fs.h> + +static bool support_inline_data(struct inode *inode) +{ + if (f2fs_used_in_atomic_write(inode)) + return false; + if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode)) + return false; + if (i_size_read(inode) > MAX_INLINE_DATA(inode)) + return false; + return true; +} + +bool f2fs_may_inline_data(struct inode *inode) +{ + if (!support_inline_data(inode)) + return false; + + return !f2fs_post_read_required(inode); +} + +static bool inode_has_blocks(struct inode *inode, struct folio *ifolio) +{ + struct f2fs_inode *ri = F2FS_INODE(ifolio); + int i; + + if (F2FS_HAS_BLOCKS(inode)) + return true; + + for (i = 0; i < DEF_NIDS_PER_INODE; i++) { + if (ri->i_nid[i]) + return true; + } + return false; +} + +bool f2fs_sanity_check_inline_data(struct inode *inode, struct folio *ifolio) +{ + if (!f2fs_has_inline_data(inode)) + return false; + + if (inode_has_blocks(inode, ifolio)) + return false; + + if (!support_inline_data(inode)) + return true; + + /* + * used by sanity_check_inode(), when disk layout fields has not + * been synchronized to inmem fields. + */ + return (S_ISREG(inode->i_mode) && + (file_is_encrypt(inode) || file_is_verity(inode) || + (F2FS_I(inode)->i_flags & F2FS_COMPR_FL))); +} + +bool f2fs_may_inline_dentry(struct inode *inode) +{ + if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY)) + return false; + + if (!S_ISDIR(inode->i_mode)) + return false; + + return true; +} + +void f2fs_do_read_inline_data(struct folio *folio, struct folio *ifolio) +{ + struct inode *inode = folio->mapping->host; + + if (folio_test_uptodate(folio)) + return; + + f2fs_bug_on(F2FS_I_SB(inode), folio->index); + + folio_zero_segment(folio, MAX_INLINE_DATA(inode), folio_size(folio)); + + /* Copy the whole inline data block */ + memcpy_to_folio(folio, 0, inline_data_addr(inode, ifolio), + MAX_INLINE_DATA(inode)); + if (!folio_test_uptodate(folio)) + folio_mark_uptodate(folio); +} + +void f2fs_truncate_inline_inode(struct inode *inode, struct folio *ifolio, + u64 from) +{ + void *addr; + + if (from >= MAX_INLINE_DATA(inode)) + return; + + addr = inline_data_addr(inode, ifolio); + + f2fs_folio_wait_writeback(ifolio, NODE, true, true); + memset(addr + from, 0, MAX_INLINE_DATA(inode) - from); + folio_mark_dirty(ifolio); + + if (from == 0) + clear_inode_flag(inode, FI_DATA_EXIST); +} + +int f2fs_read_inline_data(struct inode *inode, struct folio *folio) +{ + struct folio *ifolio; + + ifolio = f2fs_get_inode_folio(F2FS_I_SB(inode), inode->i_ino); + if (IS_ERR(ifolio)) { + folio_unlock(folio); + return PTR_ERR(ifolio); + } + + if (!f2fs_has_inline_data(inode)) { + f2fs_folio_put(ifolio, true); + return -EAGAIN; + } + + if (folio->index) + folio_zero_segment(folio, 0, folio_size(folio)); + else + f2fs_do_read_inline_data(folio, ifolio); + + if (!folio_test_uptodate(folio)) + folio_mark_uptodate(folio); + f2fs_folio_put(ifolio, true); + folio_unlock(folio); + return 0; +} + +int f2fs_convert_inline_folio(struct dnode_of_data *dn, struct folio *folio) +{ + struct f2fs_io_info fio = { + .sbi = F2FS_I_SB(dn->inode), + .ino = dn->inode->i_ino, + .type = DATA, + .op = REQ_OP_WRITE, + .op_flags = REQ_SYNC | REQ_PRIO, + .folio = folio, + .encrypted_page = NULL, + .io_type = FS_DATA_IO, + }; + struct node_info ni; + int dirty, err; + + if (!f2fs_exist_data(dn->inode)) + goto clear_out; + + err = f2fs_reserve_block(dn, 0); + if (err) + return err; + + err = f2fs_get_node_info(fio.sbi, dn->nid, &ni, false); + if (err) { + f2fs_truncate_data_blocks_range(dn, 1); + f2fs_put_dnode(dn); + return err; + } + + fio.version = ni.version; + + if (unlikely(dn->data_blkaddr != NEW_ADDR)) { + f2fs_put_dnode(dn); + set_sbi_flag(fio.sbi, SBI_NEED_FSCK); + f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", + __func__, dn->inode->i_ino, dn->data_blkaddr); + f2fs_handle_error(fio.sbi, ERROR_INVALID_BLKADDR); + return -EFSCORRUPTED; + } + + f2fs_bug_on(F2FS_F_SB(folio), folio_test_writeback(folio)); + + f2fs_do_read_inline_data(folio, dn->inode_folio); + folio_mark_dirty(folio); + + /* clear dirty state */ + dirty = folio_clear_dirty_for_io(folio); + + /* write data page to try to make data consistent */ + folio_start_writeback(folio); + fio.old_blkaddr = dn->data_blkaddr; + set_inode_flag(dn->inode, FI_HOT_DATA); + f2fs_outplace_write_data(dn, &fio); + f2fs_folio_wait_writeback(folio, DATA, true, true); + if (dirty) { + inode_dec_dirty_pages(dn->inode); + f2fs_remove_dirty_inode(dn->inode); + } + + /* this converted inline_data should be recovered. */ + set_inode_flag(dn->inode, FI_APPEND_WRITE); + + /* clear inline data and flag after data writeback */ + f2fs_truncate_inline_inode(dn->inode, dn->inode_folio, 0); + folio_clear_f2fs_inline(dn->inode_folio); +clear_out: + stat_dec_inline_inode(dn->inode); + clear_inode_flag(dn->inode, FI_INLINE_DATA); + f2fs_put_dnode(dn); + return 0; +} + +int f2fs_convert_inline_inode(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct dnode_of_data dn; + struct folio *ifolio, *folio; + int err = 0; + + if (f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb)) + return -EROFS; + + if (!f2fs_has_inline_data(inode)) + return 0; + + err = f2fs_dquot_initialize(inode); + if (err) + return err; + + folio = f2fs_grab_cache_folio(inode->i_mapping, 0, false); + if (IS_ERR(folio)) + return PTR_ERR(folio); + + f2fs_lock_op(sbi); + + ifolio = f2fs_get_inode_folio(sbi, inode->i_ino); + if (IS_ERR(ifolio)) { + err = PTR_ERR(ifolio); + goto out; + } + + set_new_dnode(&dn, inode, ifolio, ifolio, 0); + + if (f2fs_has_inline_data(inode)) + err = f2fs_convert_inline_folio(&dn, folio); + + f2fs_put_dnode(&dn); +out: + f2fs_unlock_op(sbi); + + f2fs_folio_put(folio, true); + + if (!err) + f2fs_balance_fs(sbi, dn.node_changed); + + return err; +} + +int f2fs_write_inline_data(struct inode *inode, struct folio *folio) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct folio *ifolio; + + ifolio = f2fs_get_inode_folio(sbi, inode->i_ino); + if (IS_ERR(ifolio)) + return PTR_ERR(ifolio); + + if (!f2fs_has_inline_data(inode)) { + f2fs_folio_put(ifolio, true); + return -EAGAIN; + } + + f2fs_bug_on(F2FS_I_SB(inode), folio->index); + + f2fs_folio_wait_writeback(ifolio, NODE, true, true); + memcpy_from_folio(inline_data_addr(inode, ifolio), + folio, 0, MAX_INLINE_DATA(inode)); + folio_mark_dirty(ifolio); + + f2fs_clear_page_cache_dirty_tag(folio); + + set_inode_flag(inode, FI_APPEND_WRITE); + set_inode_flag(inode, FI_DATA_EXIST); + + folio_clear_f2fs_inline(ifolio); + f2fs_folio_put(ifolio, true); + return 0; +} + +int f2fs_recover_inline_data(struct inode *inode, struct folio *nfolio) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct f2fs_inode *ri = NULL; + void *src_addr, *dst_addr; + + /* + * The inline_data recovery policy is as follows. + * [prev.] [next] of inline_data flag + * o o -> recover inline_data + * o x -> remove inline_data, and then recover data blocks + * x o -> remove data blocks, and then recover inline_data + * x x -> recover data blocks + */ + if (IS_INODE(nfolio)) + ri = F2FS_INODE(nfolio); + + if (f2fs_has_inline_data(inode) && + ri && (ri->i_inline & F2FS_INLINE_DATA)) { + struct folio *ifolio; +process_inline: + ifolio = f2fs_get_inode_folio(sbi, inode->i_ino); + if (IS_ERR(ifolio)) + return PTR_ERR(ifolio); + + f2fs_folio_wait_writeback(ifolio, NODE, true, true); + + src_addr = inline_data_addr(inode, nfolio); + dst_addr = inline_data_addr(inode, ifolio); + memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); + + set_inode_flag(inode, FI_INLINE_DATA); + set_inode_flag(inode, FI_DATA_EXIST); + + folio_mark_dirty(ifolio); + f2fs_folio_put(ifolio, true); + return 1; + } + + if (f2fs_has_inline_data(inode)) { + struct folio *ifolio = f2fs_get_inode_folio(sbi, inode->i_ino); + if (IS_ERR(ifolio)) + return PTR_ERR(ifolio); + f2fs_truncate_inline_inode(inode, ifolio, 0); + stat_dec_inline_inode(inode); + clear_inode_flag(inode, FI_INLINE_DATA); + f2fs_folio_put(ifolio, true); + } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { + int ret; + + ret = f2fs_truncate_blocks(inode, 0, false); + if (ret) + return ret; + stat_inc_inline_inode(inode); + goto process_inline; + } + return 0; +} + +struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir, + const struct f2fs_filename *fname, + struct folio **res_folio, + bool use_hash) +{ + struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_dir_entry *de; + struct f2fs_dentry_ptr d; + struct folio *ifolio; + void *inline_dentry; + + ifolio = f2fs_get_inode_folio(sbi, dir->i_ino); + if (IS_ERR(ifolio)) { + *res_folio = ifolio; + return NULL; + } + + inline_dentry = inline_data_addr(dir, ifolio); + + make_dentry_ptr_inline(dir, &d, inline_dentry); + de = f2fs_find_target_dentry(&d, fname, NULL, use_hash); + folio_unlock(ifolio); + if (IS_ERR(de)) { + *res_folio = ERR_CAST(de); + de = NULL; + } + if (de) + *res_folio = ifolio; + else + f2fs_folio_put(ifolio, false); + + return de; +} + +int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent, + struct folio *ifolio) +{ + struct f2fs_dentry_ptr d; + void *inline_dentry; + + inline_dentry = inline_data_addr(inode, ifolio); + + make_dentry_ptr_inline(inode, &d, inline_dentry); + f2fs_do_make_empty_dir(inode, parent, &d); + + folio_mark_dirty(ifolio); + + /* update i_size to MAX_INLINE_DATA */ + if (i_size_read(inode) < MAX_INLINE_DATA(inode)) + f2fs_i_size_write(inode, MAX_INLINE_DATA(inode)); + return 0; +} + +/* + * NOTE: ipage is grabbed by caller, but if any error occurs, we should + * release ipage in this function. + */ +static int f2fs_move_inline_dirents(struct inode *dir, struct folio *ifolio, + void *inline_dentry) +{ + struct folio *folio; + struct dnode_of_data dn; + struct f2fs_dentry_block *dentry_blk; + struct f2fs_dentry_ptr src, dst; + int err; + + folio = f2fs_grab_cache_folio(dir->i_mapping, 0, true); + if (IS_ERR(folio)) { + f2fs_folio_put(ifolio, true); + return PTR_ERR(folio); + } + + set_new_dnode(&dn, dir, ifolio, NULL, 0); + err = f2fs_reserve_block(&dn, 0); + if (err) + goto out; + + if (unlikely(dn.data_blkaddr != NEW_ADDR)) { + f2fs_put_dnode(&dn); + set_sbi_flag(F2FS_F_SB(folio), SBI_NEED_FSCK); + f2fs_warn(F2FS_F_SB(folio), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", + __func__, dir->i_ino, dn.data_blkaddr); + f2fs_handle_error(F2FS_F_SB(folio), ERROR_INVALID_BLKADDR); + err = -EFSCORRUPTED; + goto out; + } + + f2fs_folio_wait_writeback(folio, DATA, true, true); + + dentry_blk = folio_address(folio); + + /* + * Start by zeroing the full block, to ensure that all unused space is + * zeroed and no uninitialized memory is leaked to disk. + */ + memset(dentry_blk, 0, F2FS_BLKSIZE); + + make_dentry_ptr_inline(dir, &src, inline_dentry); + make_dentry_ptr_block(dir, &dst, dentry_blk); + + /* copy data from inline dentry block to new dentry block */ + memcpy(dst.bitmap, src.bitmap, src.nr_bitmap); + memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max); + memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN); + + if (!folio_test_uptodate(folio)) + folio_mark_uptodate(folio); + folio_mark_dirty(folio); + + /* clear inline dir and flag after data writeback */ + f2fs_truncate_inline_inode(dir, ifolio, 0); + + stat_dec_inline_dir(dir); + clear_inode_flag(dir, FI_INLINE_DENTRY); + + /* + * should retrieve reserved space which was used to keep + * inline_dentry's structure for backward compatibility. + */ + if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && + !f2fs_has_inline_xattr(dir)) + F2FS_I(dir)->i_inline_xattr_size = 0; + + f2fs_i_depth_write(dir, 1); + if (i_size_read(dir) < PAGE_SIZE) + f2fs_i_size_write(dir, PAGE_SIZE); +out: + f2fs_folio_put(folio, true); + return err; +} + +static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry) +{ + struct f2fs_dentry_ptr d; + unsigned long bit_pos = 0; + int err = 0; + + make_dentry_ptr_inline(dir, &d, inline_dentry); + + while (bit_pos < d.max) { + struct f2fs_dir_entry *de; + struct f2fs_filename fname; + nid_t ino; + umode_t fake_mode; + + if (!test_bit_le(bit_pos, d.bitmap)) { + bit_pos++; + continue; + } + + de = &d.dentry[bit_pos]; + + if (unlikely(!de->name_len)) { + bit_pos++; + continue; + } + + /* + * We only need the disk_name and hash to move the dentry. + * We don't need the original or casefolded filenames. + */ + memset(&fname, 0, sizeof(fname)); + fname.disk_name.name = d.filename[bit_pos]; + fname.disk_name.len = le16_to_cpu(de->name_len); + fname.hash = de->hash_code; + + ino = le32_to_cpu(de->ino); + fake_mode = fs_ftype_to_dtype(de->file_type) << S_DT_SHIFT; + + err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode); + if (err) + goto punch_dentry_pages; + + bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); + } + return 0; +punch_dentry_pages: + truncate_inode_pages(&dir->i_data, 0); + f2fs_truncate_blocks(dir, 0, false); + f2fs_remove_dirty_inode(dir); + return err; +} + +static int f2fs_move_rehashed_dirents(struct inode *dir, struct folio *ifolio, + void *inline_dentry) +{ + void *backup_dentry; + int err; + + backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir), + MAX_INLINE_DATA(dir), GFP_F2FS_ZERO); + if (!backup_dentry) { + f2fs_folio_put(ifolio, true); + return -ENOMEM; + } + + memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir)); + f2fs_truncate_inline_inode(dir, ifolio, 0); + + folio_unlock(ifolio); + + err = f2fs_add_inline_entries(dir, backup_dentry); + if (err) + goto recover; + + folio_lock(ifolio); + + stat_dec_inline_dir(dir); + clear_inode_flag(dir, FI_INLINE_DENTRY); + + /* + * should retrieve reserved space which was used to keep + * inline_dentry's structure for backward compatibility. + */ + if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && + !f2fs_has_inline_xattr(dir)) + F2FS_I(dir)->i_inline_xattr_size = 0; + + kfree(backup_dentry); + return 0; +recover: + folio_lock(ifolio); + f2fs_folio_wait_writeback(ifolio, NODE, true, true); + memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir)); + f2fs_i_depth_write(dir, 0); + f2fs_i_size_write(dir, MAX_INLINE_DATA(dir)); + folio_mark_dirty(ifolio); + f2fs_folio_put(ifolio, true); + + kfree(backup_dentry); + return err; +} + +static int do_convert_inline_dir(struct inode *dir, struct folio *ifolio, + void *inline_dentry) +{ + if (!F2FS_I(dir)->i_dir_level) + return f2fs_move_inline_dirents(dir, ifolio, inline_dentry); + else + return f2fs_move_rehashed_dirents(dir, ifolio, inline_dentry); +} + +int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); + struct folio *ifolio; + struct f2fs_filename fname; + void *inline_dentry = NULL; + int err = 0; + + if (!f2fs_has_inline_dentry(dir)) + return 0; + + f2fs_lock_op(sbi); + + err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname); + if (err) + goto out; + + ifolio = f2fs_get_inode_folio(sbi, dir->i_ino); + if (IS_ERR(ifolio)) { + err = PTR_ERR(ifolio); + goto out_fname; + } + + if (f2fs_has_enough_room(dir, ifolio, &fname)) { + f2fs_folio_put(ifolio, true); + goto out_fname; + } + + inline_dentry = inline_data_addr(dir, ifolio); + + err = do_convert_inline_dir(dir, ifolio, inline_dentry); + if (!err) + f2fs_folio_put(ifolio, true); +out_fname: + f2fs_free_filename(&fname); +out: + f2fs_unlock_op(sbi); + return err; +} + +int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, + struct inode *inode, nid_t ino, umode_t mode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); + struct folio *ifolio; + unsigned int bit_pos; + void *inline_dentry = NULL; + struct f2fs_dentry_ptr d; + int slots = GET_DENTRY_SLOTS(fname->disk_name.len); + struct folio *folio = NULL; + int err = 0; + + ifolio = f2fs_get_inode_folio(sbi, dir->i_ino); + if (IS_ERR(ifolio)) + return PTR_ERR(ifolio); + + inline_dentry = inline_data_addr(dir, ifolio); + make_dentry_ptr_inline(dir, &d, inline_dentry); + + bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max); + if (bit_pos >= d.max) { + err = do_convert_inline_dir(dir, ifolio, inline_dentry); + if (err) + return err; + err = -EAGAIN; + goto out; + } + + if (inode) { + f2fs_down_write_nested(&F2FS_I(inode)->i_sem, + SINGLE_DEPTH_NESTING); + folio = f2fs_init_inode_metadata(inode, dir, fname, ifolio); + if (IS_ERR(folio)) { + err = PTR_ERR(folio); + goto fail; + } + } + + f2fs_folio_wait_writeback(ifolio, NODE, true, true); + + f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash, + bit_pos); + + folio_mark_dirty(ifolio); + + /* we don't need to mark_inode_dirty now */ + if (inode) { + f2fs_i_pino_write(inode, dir->i_ino); + + /* synchronize inode page's data from inode cache */ + if (is_inode_flag_set(inode, FI_NEW_INODE)) + f2fs_update_inode(inode, folio); + + f2fs_folio_put(folio, true); + } + + f2fs_update_parent_metadata(dir, inode, 0); +fail: + if (inode) + f2fs_up_write(&F2FS_I(inode)->i_sem); +out: + f2fs_folio_put(ifolio, true); + return err; +} + +void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, + struct folio *folio, struct inode *dir, struct inode *inode) +{ + struct f2fs_dentry_ptr d; + void *inline_dentry; + int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); + unsigned int bit_pos; + int i; + + folio_lock(folio); + f2fs_folio_wait_writeback(folio, NODE, true, true); + + inline_dentry = inline_data_addr(dir, folio); + make_dentry_ptr_inline(dir, &d, inline_dentry); + + bit_pos = dentry - d.dentry; + for (i = 0; i < slots; i++) + __clear_bit_le(bit_pos + i, d.bitmap); + + folio_mark_dirty(folio); + f2fs_folio_put(folio, true); + + inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir)); + f2fs_mark_inode_dirty_sync(dir, false); + + if (inode) + f2fs_drop_nlink(dir, inode); +} + +bool f2fs_empty_inline_dir(struct inode *dir) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); + struct folio *ifolio; + unsigned int bit_pos = 2; + void *inline_dentry; + struct f2fs_dentry_ptr d; + + ifolio = f2fs_get_inode_folio(sbi, dir->i_ino); + if (IS_ERR(ifolio)) + return false; + + inline_dentry = inline_data_addr(dir, ifolio); + make_dentry_ptr_inline(dir, &d, inline_dentry); + + bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos); + + f2fs_folio_put(ifolio, true); + + if (bit_pos < d.max) + return false; + + return true; +} + +int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, + struct fscrypt_str *fstr) +{ + struct inode *inode = file_inode(file); + struct folio *ifolio = NULL; + struct f2fs_dentry_ptr d; + void *inline_dentry = NULL; + int err; + + make_dentry_ptr_inline(inode, &d, inline_dentry); + + if (ctx->pos == d.max) + return 0; + + ifolio = f2fs_get_inode_folio(F2FS_I_SB(inode), inode->i_ino); + if (IS_ERR(ifolio)) + return PTR_ERR(ifolio); + + /* + * f2fs_readdir was protected by inode.i_rwsem, it is safe to access + * ipage without page's lock held. + */ + folio_unlock(ifolio); + + inline_dentry = inline_data_addr(inode, ifolio); + + make_dentry_ptr_inline(inode, &d, inline_dentry); + + err = f2fs_fill_dentries(ctx, &d, 0, fstr); + if (!err) + ctx->pos = d.max; + + f2fs_folio_put(ifolio, false); + return err < 0 ? err : 0; +} + +int f2fs_inline_data_fiemap(struct inode *inode, + struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) +{ + __u64 byteaddr, ilen; + __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | + FIEMAP_EXTENT_LAST; + struct node_info ni; + 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); + + if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) && + !f2fs_has_inline_data(inode)) { + err = -EAGAIN; + goto out; + } + + if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) { + err = -EAGAIN; + goto out; + } + + ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode)); + if (start >= ilen) + goto out; + if (start + len < ilen) + ilen = start + len; + ilen -= start; + + err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni, false); + if (err) + goto out; + + byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; + byteaddr += (char *)inline_data_addr(inode, ifolio) - + (char *)F2FS_INODE(ifolio); + err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); + trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err); +out: + f2fs_folio_put(ifolio, true); + return err; +} |