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authorTejun Heo <tj@kernel.org>2011-01-13 22:59:58 +0300
committerAlasdair G Kergon <agk@redhat.com>2011-01-13 22:59:58 +0300
commit9c4376de98719d2768dd919553843de34bb094a6 (patch)
treec20b10e9018bb51803c535a38a04ee8b12b6d98a /drivers/md/dm-raid1.c
parent4d4d66ab5322fa9b0f51842a76139387a40e1ce9 (diff)
downloadlinux-9c4376de98719d2768dd919553843de34bb094a6.tar.xz
dm: use non reentrant workqueues if equivalent
kmirrord_wq, kcopyd_work and md->wq are created per dm instance and serve only a single work item from the dm instance, so non-reentrant workqueues would provide the same ordering guarantees as ordered ones while allowing CPU affinity and use of the workqueues for other purposes. Switch them to non-reentrant workqueues. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-raid1.c')
-rw-r--r--drivers/md/dm-raid1.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 39917430f9f8..dee326775c60 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -1085,7 +1085,8 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv)
ti->num_flush_requests = 1;
ti->num_discard_requests = 1;
- ms->kmirrord_wq = alloc_ordered_workqueue("kmirrord", WQ_MEM_RECLAIM);
+ ms->kmirrord_wq = alloc_workqueue("kmirrord",
+ WQ_NON_REENTRANT | WQ_MEM_RECLAIM, 0);
if (!ms->kmirrord_wq) {
DMERR("couldn't start kmirrord");
r = -ENOMEM;
@@ -1414,7 +1415,7 @@ static int mirror_iterate_devices(struct dm_target *ti,
static struct target_type mirror_target = {
.name = "mirror",
- .version = {1, 12, 0},
+ .version = {1, 12, 1},
.module = THIS_MODULE,
.ctr = mirror_ctr,
.dtr = mirror_dtr,