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libceph: ceph-msgr workqueue needs a resque worker 

Commit f363e45fd1 ("net/ceph: make ceph_msgr_wq non-reentrant")
effectively removed WQ_MEM_RECLAIM flag from ceph_msgr_wq.  This is
wrong - libceph is very much a memory reclaim path, so restore it.

Cc: stable@vger.kernel.org # needs backporting for < 3.12
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Tested-by: Micha Krause <micha@krausam.de>
Reviewed-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Ilya Dryomov 2014-10-10 16:39:05 +04:00 committed by Sage Weil
parent ab6c2c3ebe
commit f9865f06f7
1 changed files with 5 additions and 1 deletions
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6
net/ceph/messenger.c
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@ -292,7 +292,11 @@ int ceph_msgr_init(void)
if (ceph_msgr_slab_init())
return -ENOMEM;
ceph_msgr_wq = alloc_workqueue("ceph-msgr", 0, 0);
/*
* The number of active work items is limited by the number of
* connections, so leave @max_active at default.
*/
ceph_msgr_wq = alloc_workqueue("ceph-msgr", WQ_MEM_RECLAIM, 0);
if (ceph_msgr_wq)
return 0;