I just staged this for 5.11, see: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git/commit/?h=dm-5.11&id=373ce365b756bf6fec237461a0bbe65f33f201f6 I tweaked your patch header just a bit. Thanks, Mike On Tue, Nov 17 2020 at 9:01pm -0500, JeffleXu <jefflexu@xxxxxxxxxxxxxxxxx> wrote: > Hi Mike, > > How about this patch? I just tweaks the commit message in this v2 > patch to make > > the purpose clearer, while keep the code unstained. > > > Thanks, > > Jeffle > > > On 11/13/20 10:05 AM, Jeffle Xu wrote: > >commit 021a24460dc2 ("block: add QUEUE_FLAG_NOWAIT") adds a new queue > >flag QUEUE_FLAG_NOWAIT to advertise if the bdev supports handling of > >REQ_NOWAIT or not. DM core supports this in commit 6abc49468eea ("dm: > >add support for REQ_NOWAIT and enable it for linear target"), in which > >only dm-linear is enabled. > > > >This patch also enables several dm-linear likely dm targets, the mapping > >algorithm of which is just simple remapping. > > > >Signed-off-by: Jeffle Xu <jefflexu@xxxxxxxxxxxxxxxxx> > >--- > > 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 151d022b032d..df359d33cda8 100644 > >--- a/drivers/md/dm-stripe.c > >+++ b/drivers/md/dm-stripe.c > >@@ -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, > >diff --git a/drivers/md/dm-switch.c b/drivers/md/dm-switch.c > >index bff4c7fa1cd2..262e2b0fd975 100644 > >--- a/drivers/md/dm-switch.c > >+++ b/drivers/md/dm-switch.c > >@@ -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, > >diff --git a/drivers/md/dm-unstripe.c b/drivers/md/dm-unstripe.c > >index e673dacf6418..7357c1bd5863 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 b65ca8dcfbdc..faa1dbffc8b4 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, > > -- > Thanks, > Jeffle > -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
