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: [email protected] # 3.17, needs backporting for 3.16 Signed-off-by: Ilya Dryomov <[email protected]> Tested-by: Micha Krause <[email protected]> --- drivers/block/rbd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) 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; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
