Commit 410fe220 authored by Jeffle Xu's avatar Jeffle Xu Committed by Mike Snitzer
Browse files

dm: add support for REQ_NOWAIT to various targets 



commit 021a2446 ("block: add QUEUE_FLAG_NOWAIT") added a new queue
flag QUEUE_FLAG_NOWAIT to advertise if the bdev supports handling of
REQ_NOWAIT or not. DM core supports stacking QUEUE_FLAG_NOWAIT since
commit 6abc4946 ("dm: add support for REQ_NOWAIT and enable it for
linear target"), in which only dm-linear enabled it.

Update others DM targets, which just do simple remapping, to enable
support for REQ_NOWAIT.

Signed-off-by: default avatarJeffle Xu <jefflexu@linux.alibaba.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent 298fb372

drivers/md/dm-stripe.c

+1 −1
Original line number Diff line number Diff line
@@ -496,7 +496,7 @@ static void stripe_io_hints(struct dm_target *ti, 
static struct target_type stripe_target = {

	.name   = "striped",

	.version = {1, 6, 0},

	.features = DM_TARGET_PASSES_INTEGRITY,

	.features = DM_TARGET_PASSES_INTEGRITY | DM_TARGET_NOWAIT,

	.module = THIS_MODULE,

	.ctr    = stripe_ctr,

	.dtr    = stripe_dtr,

drivers/md/dm-switch.c

+1 −0
Original line number Diff line number Diff line
@@ -550,6 +550,7 @@ static int switch_iterate_devices(struct dm_target *ti, 
static struct target_type switch_target = {

	.name = "switch",

	.version = {1, 1, 0},

	.features = DM_TARGET_NOWAIT,

	.module = THIS_MODULE,

	.ctr = switch_ctr,

	.dtr = switch_dtr,

drivers/md/dm-unstripe.c

+1 −0
Original line number Diff line number Diff line
@@ -178,6 +178,7 @@ static void unstripe_io_hints(struct dm_target *ti, 
static struct target_type unstripe_target = {

	.name = "unstriped",

	.version = {1, 1, 0},

	.features = DM_TARGET_NOWAIT,

	.module = THIS_MODULE,

	.ctr = unstripe_ctr,

	.dtr = unstripe_dtr,

drivers/md/dm-zero.c

+1 −0
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ static int zero_map(struct dm_target *ti, struct bio *bio) 
static struct target_type zero_target = {

	.name   = "zero",

	.version = {1, 1, 0},

	.features = DM_TARGET_NOWAIT,

	.module = THIS_MODULE,

	.ctr    = zero_ctr,

	.map    = zero_map,

CRA Git | Maintained and supported by SUSTech CRA and CCSE