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authorMike Snitzer <snitzer@redhat.com>2019-01-16 18:53:26 -0500
committerMike Snitzer <snitzer@redhat.com>2019-01-21 11:29:18 -0500
commit57c36519e4b949f89381053f7283f5d605595b42 (patch)
treee2422cb8eae102acf99b4a0460e716bb6bcf002e /drivers/md/dm.c
parentd445bd9cec1a850c2100fcf53684c13b3fd934f2 (diff)
downloadlinux-57c36519e4b949f89381053f7283f5d605595b42.tar.bz2
dm: fix clone_bio() to trigger blk_recount_segments()
DM's clone_bio() now benefits from using bio_trim() by fixing the fact that clone_bio() wasn't clearing BIO_SEG_VALID like bio_trim() does; which triggers blk_recount_segments() via bio_phys_segments(). Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm.c')
-rw-r--r--drivers/md/dm.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index d67c95ef8d7e..fcb97b0a5743 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1320,7 +1320,7 @@ static int clone_bio(struct dm_target_io *tio, struct bio *bio,
__bio_clone_fast(clone, bio);
- if (unlikely(bio_integrity(bio) != NULL)) {
+ if (bio_integrity(bio)) {
int r;
if (unlikely(!dm_target_has_integrity(tio->ti->type) &&
@@ -1336,11 +1336,7 @@ static int clone_bio(struct dm_target_io *tio, struct bio *bio,
return r;
}
- bio_advance(clone, to_bytes(sector - clone->bi_iter.bi_sector));
- clone->bi_iter.bi_size = to_bytes(len);
-
- if (unlikely(bio_integrity(bio) != NULL))
- bio_integrity_trim(clone);
+ bio_trim(clone, sector - clone->bi_iter.bi_sector, len);
return 0;
}