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>
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@ -292,7 +292,11 @@ int ceph_msgr_init(void)
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if (ceph_msgr_slab_init())
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if (ceph_msgr_slab_init())
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return -ENOMEM;
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return -ENOMEM;
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ceph_msgr_wq = alloc_workqueue("ceph-msgr", 0, 0);
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/*
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* The number of active work items is limited by the number of
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* connections, so leave @max_active at default.
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*/
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ceph_msgr_wq = alloc_workqueue("ceph-msgr", WQ_MEM_RECLAIM, 0);
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if (ceph_msgr_wq)
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if (ceph_msgr_wq)
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return 0;
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return 0;
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