From 77d1072875afa69aeb981d0b16ba09384e8de6ea Mon Sep 17 00:00:00 2001 From: Jeffle Xu Date: Mon, 9 Nov 2020 17:11:46 +0800 Subject: [PATCH 2280/2944] dm: add support for DM_TARGET_NOWAIT for various targets to #29533985 commit 373ce365b756bf6fec237461a0bbe65f33f201f6 linux-dm. commit 021a24460dc2 ("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 6abc49468eea ("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: Jeffle Xu Signed-off-by: Mike Snitzer Reviewed-by: Joseph Qi --- drivers/md/dm-stripe.c | 2 +- drivers/md/dm-switch.c | 1 + drivers/md/dm-unstripe.c | 1 + drivers/md/dm-zero.c | 1 + 4 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index 8547d75..efc2ff4 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -487,7 +487,7 @@ 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, diff --git a/drivers/md/dm-switch.c b/drivers/md/dm-switch.c index fae35ca..78e2246 100644 --- a/drivers/md/dm-switch.c +++ b/drivers/md/dm-switch.c @@ -551,6 +551,7 @@ 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, diff --git a/drivers/md/dm-unstripe.c b/drivers/md/dm-unstripe.c index e673dac..7357c1b 100644 --- a/drivers/md/dm-unstripe.c +++ b/drivers/md/dm-unstripe.c @@ -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, diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c index b65ca8d..faa1dbf 100644 --- a/drivers/md/dm-zero.c +++ b/drivers/md/dm-zero.c @@ -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, -- 1.8.3.1