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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-kcopyd.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-kcopyd.c')
-rw-r--r--drivers/md/dm-kcopyd.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index 63d67169c7f4..924f5f0084c2 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -672,7 +672,8 @@ int dm_kcopyd_client_create(unsigned int nr_pages,
goto bad_slab;
INIT_WORK(&kc->kcopyd_work, do_work);
- kc->kcopyd_wq = alloc_ordered_workqueue("kcopyd", WQ_MEM_RECLAIM);
+ kc->kcopyd_wq = alloc_workqueue("kcopyd",
+ WQ_NON_REENTRANT | WQ_MEM_RECLAIM, 0);
if (!kc->kcopyd_wq)
goto bad_workqueue;