diff options
Diffstat (limited to 'drivers/md/dm-snap.c')
-rw-r--r-- | drivers/md/dm-snap.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index 5974d3094d97..eed210152b75 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c | |||
@@ -1587,7 +1587,7 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio, | |||
1587 | chunk_t chunk; | 1587 | chunk_t chunk; |
1588 | struct dm_snap_pending_exception *pe = NULL; | 1588 | struct dm_snap_pending_exception *pe = NULL; |
1589 | 1589 | ||
1590 | if (unlikely(bio_empty_barrier(bio))) { | 1590 | if (bio->bi_rw & REQ_FLUSH) { |
1591 | bio->bi_bdev = s->cow->bdev; | 1591 | bio->bi_bdev = s->cow->bdev; |
1592 | return DM_MAPIO_REMAPPED; | 1592 | return DM_MAPIO_REMAPPED; |
1593 | } | 1593 | } |
@@ -1691,7 +1691,7 @@ static int snapshot_merge_map(struct dm_target *ti, struct bio *bio, | |||
1691 | int r = DM_MAPIO_REMAPPED; | 1691 | int r = DM_MAPIO_REMAPPED; |
1692 | chunk_t chunk; | 1692 | chunk_t chunk; |
1693 | 1693 | ||
1694 | if (unlikely(bio_empty_barrier(bio))) { | 1694 | if (bio->bi_rw & REQ_FLUSH) { |
1695 | if (!map_context->target_request_nr) | 1695 | if (!map_context->target_request_nr) |
1696 | bio->bi_bdev = s->origin->bdev; | 1696 | bio->bi_bdev = s->origin->bdev; |
1697 | else | 1697 | else |
@@ -2135,7 +2135,7 @@ static int origin_map(struct dm_target *ti, struct bio *bio, | |||
2135 | struct dm_dev *dev = ti->private; | 2135 | struct dm_dev *dev = ti->private; |
2136 | bio->bi_bdev = dev->bdev; | 2136 | bio->bi_bdev = dev->bdev; |
2137 | 2137 | ||
2138 | if (unlikely(bio_empty_barrier(bio))) | 2138 | if (bio->bi_rw & REQ_FLUSH) |
2139 | return DM_MAPIO_REMAPPED; | 2139 | return DM_MAPIO_REMAPPED; |
2140 | 2140 | ||
2141 | /* Only tell snapshots if this is a write */ | 2141 | /* Only tell snapshots if this is a write */ |