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| author | Ilya Dryomov <idryomov@redhat.com> | 2014-10-10 16:36:07 +0200 |
|---|---|---|
| committer | Sage Weil <sage@redhat.com> | 2014-10-14 21:57:05 +0200 |
| commit | 792c3a914910bd34302c5345578f85cfcb5e2c01 (patch) | |
| tree | 468b46ac85092eb3b0e728c7614a753855b68722 /drivers/block/rbd.c | |
| parent | libceph: ceph-msgr workqueue needs a resque worker (diff) | |
| download | linux-792c3a914910bd34302c5345578f85cfcb5e2c01.tar.xz linux-792c3a914910bd34302c5345578f85cfcb5e2c01.zip | |
rbd: rbd workqueues need a resque worker
Need to use WQ_MEM_RECLAIM for our workqueues to prevent I/O lockups
under memory pressure - we sit on the memory reclaim path.
Cc: stable@vger.kernel.org # 3.17, needs backporting for 3.16
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Tested-by: Micha Krause <micha@krausam.de>
Reviewed-by: Sage Weil <sage@redhat.com>
Diffstat (limited to 'drivers/block/rbd.c')
| -rw-r--r-- | drivers/block/rbd.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 7712ae65753c..0a54c588e433 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -5242,7 +5242,8 @@ static int rbd_dev_device_setup(struct rbd_device *rbd_dev) set_capacity(rbd_dev->disk, rbd_dev->mapping.size / SECTOR_SIZE); set_disk_ro(rbd_dev->disk, rbd_dev->mapping.read_only); - rbd_dev->rq_wq = alloc_workqueue("%s", 0, 0, rbd_dev->disk->disk_name); + rbd_dev->rq_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, + rbd_dev->disk->disk_name); if (!rbd_dev->rq_wq) { ret = -ENOMEM; goto err_out_mapping; |