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authorLinus Torvalds <torvalds@linux-foundation.org>2020-05-29 13:58:13 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-05-29 13:58:13 -0700
commit835e36b1197a4f066d0254c897f2c8b455cbb581 (patch)
treecf5ee4a29933d905d3f30d35d82c10295dac83ac
parent4f23460cfa867aa560119e18a73616e784d3cd66 (diff)
parent20be493b787cd581c9fffad7fcd6bfbe6af1050c (diff)
downloadlinux-sh-835e36b1197a4f066d0254c897f2c8b455cbb581.tar.gz
Merge tag 'gfs2-v5.7-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 fix from Andreas Gruenbacher: "Fix the previous, flawed gfs2_find_jhead commit" * tag 'gfs2-v5.7-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: gfs2: Even more gfs2_find_jhead fixes
-rw-r--r--fs/gfs2/lops.c15
1 files changed, 5 insertions, 10 deletions
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 48b54ec1c793..cb2a11b458c6 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -509,12 +509,12 @@ int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head,
unsigned int bsize = sdp->sd_sb.sb_bsize, off;
unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift;
unsigned int shift = PAGE_SHIFT - bsize_shift;
- unsigned int max_bio_size = 2 * 1024 * 1024;
+ unsigned int max_blocks = 2 * 1024 * 1024 >> bsize_shift;
struct gfs2_journal_extent *je;
int sz, ret = 0;
struct bio *bio = NULL;
struct page *page = NULL;
- bool bio_chained = false, done = false;
+ bool done = false;
errseq_t since;
memset(head, 0, sizeof(*head));
@@ -537,10 +537,7 @@ int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head,
off = 0;
}
- if (!bio || (bio_chained && !off) ||
- bio->bi_iter.bi_size >= max_bio_size) {
- /* start new bio */
- } else {
+ if (bio && (off || block < blocks_submitted + max_blocks)) {
sector_t sector = dblock << sdp->sd_fsb2bb_shift;
if (bio_end_sector(bio) == sector) {
@@ -553,19 +550,17 @@ int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head,
(PAGE_SIZE - off) >> bsize_shift;
bio = gfs2_chain_bio(bio, blocks);
- bio_chained = true;
goto add_block_to_new_bio;
}
}
if (bio) {
- blocks_submitted = block + 1;
+ blocks_submitted = block;
submit_bio(bio);
}
bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read);
bio->bi_opf = REQ_OP_READ;
- bio_chained = false;
add_block_to_new_bio:
sz = bio_add_page(bio, page, bsize, off);
BUG_ON(sz != bsize);
@@ -573,7 +568,7 @@ block_added:
off += bsize;
if (off == PAGE_SIZE)
page = NULL;
- if (blocks_submitted < 2 * max_bio_size >> bsize_shift) {
+ if (blocks_submitted <= blocks_read + max_blocks) {
/* Keep at least one bio in flight */
continue;
}