diff options
| -rw-r--r-- | drivers/md/dm-thin.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index bc9d08c0218..98c50f9626d 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -707,6 +707,12 @@ static void remap_to_origin(struct thin_c *tc, struct bio *bio) bio->bi_bdev = tc->origin_dev->bdev; } +static int bio_triggers_commit(struct thin_c *tc, struct bio *bio) +{ + return (bio->bi_rw & (REQ_FLUSH | REQ_FUA)) && + dm_thin_changed_this_transaction(tc->td); +} + static void issue(struct thin_c *tc, struct bio *bio) { struct pool *pool = tc->pool; @@ -716,7 +722,7 @@ static void issue(struct thin_c *tc, struct bio *bio) * Batch together any FUA/FLUSH bios we find and then issue * a single commit for them in process_deferred_bios(). */ - if (bio->bi_rw & (REQ_FLUSH | REQ_FUA)) { + if (bio_triggers_commit(tc, bio)) { spin_lock_irqsave(&pool->lock, flags); bio_list_add(&pool->deferred_flush_bios, bio); spin_unlock_irqrestore(&pool->lock, flags); |