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Diffstat (limited to 'fs/nilfs2/segbuf.c')
-rw-r--r--fs/nilfs2/segbuf.c108
1 files changed, 32 insertions, 76 deletions
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index 20c479b5e41b..a8bdf3d318ea 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * segbuf.c - NILFS segment buffer
+ * NILFS segment buffer
*
* Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
*
@@ -101,6 +101,12 @@ int nilfs_segbuf_extend_segsum(struct nilfs_segment_buffer *segbuf)
if (unlikely(!bh))
return -ENOMEM;
+ lock_buffer(bh);
+ if (!buffer_uptodate(bh)) {
+ memset(bh->b_data, 0, bh->b_size);
+ set_buffer_uptodate(bh);
+ }
+ unlock_buffer(bh);
nilfs_segbuf_add_segsum_buffer(segbuf, bh);
return 0;
}
@@ -199,7 +205,6 @@ static void nilfs_segbuf_fill_in_data_crc(struct nilfs_segment_buffer *segbuf,
{
struct buffer_head *bh;
struct nilfs_segment_summary *raw_sum;
- void *kaddr;
u32 crc;
bh = list_entry(segbuf->sb_segsum_buffers.next, struct buffer_head,
@@ -214,9 +219,13 @@ static void nilfs_segbuf_fill_in_data_crc(struct nilfs_segment_buffer *segbuf,
crc = crc32_le(crc, bh->b_data, bh->b_size);
}
list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) {
- kaddr = kmap_atomic(bh->b_page);
- crc = crc32_le(crc, kaddr + bh_offset(bh), bh->b_size);
- kunmap_atomic(kaddr);
+ size_t offset = offset_in_folio(bh->b_folio, bh->b_data);
+ unsigned char *from;
+
+ /* Do not support block sizes larger than PAGE_SIZE */
+ from = kmap_local_folio(bh->b_folio, offset);
+ crc = crc32_le(crc, from, bh->b_size);
+ kunmap_local(from);
}
raw_sum->ss_datasum = cpu_to_le32(crc);
}
@@ -337,26 +346,12 @@ static void nilfs_end_bio_write(struct bio *bio)
}
static int nilfs_segbuf_submit_bio(struct nilfs_segment_buffer *segbuf,
- struct nilfs_write_info *wi, int mode,
- int mode_flags)
+ struct nilfs_write_info *wi)
{
struct bio *bio = wi->bio;
- int err;
-
- if (segbuf->sb_nbio > 0 &&
- bdi_write_congested(segbuf->sb_super->s_bdi)) {
- wait_for_completion(&segbuf->sb_bio_event);
- segbuf->sb_nbio--;
- if (unlikely(atomic_read(&segbuf->sb_err))) {
- bio_put(bio);
- err = -EIO;
- goto failed;
- }
- }
bio->bi_end_io = nilfs_end_bio_write;
bio->bi_private = segbuf;
- bio_set_op_attrs(bio, mode, mode_flags);
submit_bio(bio);
segbuf->sb_nbio++;
@@ -365,37 +360,6 @@ static int nilfs_segbuf_submit_bio(struct nilfs_segment_buffer *segbuf,
wi->nr_vecs = min(wi->max_pages, wi->rest_blocks);
wi->start = wi->end;
return 0;
-
- failed:
- wi->bio = NULL;
- return err;
-}
-
-/**
- * nilfs_alloc_seg_bio - allocate a new bio for writing log
- * @nilfs: nilfs object
- * @start: start block number of the bio
- * @nr_vecs: request size of page vector.
- *
- * Return Value: On success, pointer to the struct bio is returned.
- * On error, NULL is returned.
- */
-static struct bio *nilfs_alloc_seg_bio(struct the_nilfs *nilfs, sector_t start,
- int nr_vecs)
-{
- struct bio *bio;
-
- bio = bio_alloc(GFP_NOIO, nr_vecs);
- if (bio == NULL) {
- while (!bio && (nr_vecs >>= 1))
- bio = bio_alloc(GFP_NOIO, nr_vecs);
- }
- if (likely(bio)) {
- bio_set_dev(bio, nilfs->ns_bdev);
- bio->bi_iter.bi_sector =
- start << (nilfs->ns_blocksize_bits - 9);
- }
- return bio;
}
static void nilfs_segbuf_prepare_write(struct nilfs_segment_buffer *segbuf,
@@ -403,7 +367,7 @@ static void nilfs_segbuf_prepare_write(struct nilfs_segment_buffer *segbuf,
{
wi->bio = NULL;
wi->rest_blocks = segbuf->sb_sum.nblocks;
- wi->max_pages = BIO_MAX_PAGES;
+ wi->max_pages = BIO_MAX_VECS;
wi->nr_vecs = min(wi->max_pages, wi->rest_blocks);
wi->start = wi->end = 0;
wi->blocknr = segbuf->sb_pseg_start;
@@ -411,26 +375,26 @@ static void nilfs_segbuf_prepare_write(struct nilfs_segment_buffer *segbuf,
static int nilfs_segbuf_submit_bh(struct nilfs_segment_buffer *segbuf,
struct nilfs_write_info *wi,
- struct buffer_head *bh, int mode)
+ struct buffer_head *bh)
{
- int len, err;
+ int err;
BUG_ON(wi->nr_vecs <= 0);
repeat:
if (!wi->bio) {
- wi->bio = nilfs_alloc_seg_bio(wi->nilfs, wi->blocknr + wi->end,
- wi->nr_vecs);
- if (unlikely(!wi->bio))
- return -ENOMEM;
+ wi->bio = bio_alloc(wi->nilfs->ns_bdev, wi->nr_vecs,
+ REQ_OP_WRITE, GFP_NOIO);
+ wi->bio->bi_iter.bi_sector = (wi->blocknr + wi->end) <<
+ (wi->nilfs->ns_blocksize_bits - 9);
}
- len = bio_add_page(wi->bio, bh->b_page, bh->b_size, bh_offset(bh));
- if (len == bh->b_size) {
+ if (bio_add_folio(wi->bio, bh->b_folio, bh->b_size,
+ offset_in_folio(bh->b_folio, bh->b_data))) {
wi->end++;
return 0;
}
/* bio is FULL */
- err = nilfs_segbuf_submit_bio(segbuf, wi, mode, 0);
+ err = nilfs_segbuf_submit_bio(segbuf, wi);
/* never submit current bh */
if (likely(!err))
goto repeat;
@@ -442,12 +406,7 @@ static int nilfs_segbuf_submit_bh(struct nilfs_segment_buffer *segbuf,
* @segbuf: buffer storing a log to be written
* @nilfs: nilfs object
*
- * Return Value: On Success, 0 is returned. On Error, one of the following
- * negative error code is returned.
- *
- * %-EIO - I/O error
- *
- * %-ENOMEM - Insufficient memory available.
+ * Return: Always 0.
*/
static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
struct the_nilfs *nilfs)
@@ -460,13 +419,13 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
nilfs_segbuf_prepare_write(segbuf, &wi);
list_for_each_entry(bh, &segbuf->sb_segsum_buffers, b_assoc_buffers) {
- res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, REQ_OP_WRITE);
+ res = nilfs_segbuf_submit_bh(segbuf, &wi, bh);
if (unlikely(res))
goto failed_bio;
}
list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) {
- res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, REQ_OP_WRITE);
+ res = nilfs_segbuf_submit_bh(segbuf, &wi, bh);
if (unlikely(res))
goto failed_bio;
}
@@ -476,8 +435,8 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
* Last BIO is always sent through the following
* submission.
*/
- res = nilfs_segbuf_submit_bio(segbuf, &wi, REQ_OP_WRITE,
- REQ_SYNC);
+ wi.bio->bi_opf |= REQ_SYNC;
+ res = nilfs_segbuf_submit_bio(segbuf, &wi);
}
failed_bio:
@@ -488,10 +447,7 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
* nilfs_segbuf_wait - wait for completion of requested BIOs
* @segbuf: segment buffer
*
- * Return Value: On Success, 0 is returned. On Error, one of the following
- * negative error code is returned.
- *
- * %-EIO - I/O error
+ * Return: 0 on success, or %-EIO if I/O error is detected.
*/
static int nilfs_segbuf_wait(struct nilfs_segment_buffer *segbuf)
{
@@ -505,7 +461,7 @@ static int nilfs_segbuf_wait(struct nilfs_segment_buffer *segbuf)
} while (--segbuf->sb_nbio > 0);
if (unlikely(atomic_read(&segbuf->sb_err) > 0)) {
- nilfs_msg(segbuf->sb_super, KERN_ERR,
+ nilfs_err(segbuf->sb_super,
"I/O error writing log (start-blocknr=%llu, block-count=%lu) in segment %llu",
(unsigned long long)segbuf->sb_pseg_start,
segbuf->sb_sum.nblocks,
generated by cgit (git 2.34.1) at 2025-12-25 16:44:41 +0000