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authorNeilBrown <neilb@suse.com>2017-08-30 08:10:18 +1000
committerMike Snitzer <snitzer@redhat.com>2017-12-13 12:15:56 -0500
commitc110a4b6e603ece6134fe436e84957f7a4cd099e (patch)
tree5b3998ca35e9975081b2ad0c9f03b40d0b6893b0
parent80cd17578310dbaf880ae0db9240ad2218c5811a (diff)
dm io: remove BIOSET_NEED_RESCUER flag from bios bioset
The BIOSET_NEED_RESCUER flag is only needed when a make_request_fn might do two allocations from the one bioset, and the second one could block until the first bio completes. dm_io() is called from make_request_fn() context. The closest it comes to multiple allocations is in chunk_io() in dm-snap-persistent. But there the code uses a separate thread to avoid problems. So BIOSET_NEED_RESCUER is not needed. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
-rw-r--r--drivers/md/dm-io.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index b4357ed4d541..a8d914d5abbe 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -58,8 +58,7 @@ struct dm_io_client *dm_io_client_create(void)
if (!client->pool)
goto bad;
- client->bios = bioset_create(min_ios, 0, (BIOSET_NEED_BVECS |
- BIOSET_NEED_RESCUER));
+ client->bios = bioset_create(min_ios, 0, BIOSET_NEED_BVECS);
if (!client->bios)
goto bad;