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authorSteven Whitehouse <swhiteho@redhat.com>2010-11-12 12:12:29 +0000
committerDavid Teigland <teigland@redhat.com>2010-11-12 11:08:03 -0600
commitdcce240ead802d42b1e45ad2fcb2ed4a399cb255 (patch)
treef9531f06ad6e0987d3c6782cfe0a7ed335d82e48 /fs/dlm
parentb36930dd508e00f0c5083bcd57d25de6d0375c76 (diff)
downloadop-kernel-dev-dcce240ead802d42b1e45ad2fcb2ed4a399cb255.zip
op-kernel-dev-dcce240ead802d42b1e45ad2fcb2ed4a399cb255.tar.gz
dlm: Use cmwq for send and receive workqueues
So far as I can tell, there is no reason to use a single-threaded send workqueue for dlm, since it may need to send to several sockets concurrently. Both workqueues are set to WQ_MEM_RECLAIM to avoid any possible deadlocks, WQ_HIGHPRI since locking traffic is highly latency sensitive (and to avoid a priority inversion wrt GFS2's glock_workqueue) and WQ_FREEZABLE just in case someone needs to do that (even though with current cluster infrastructure, it doesn't make sense as the node will most likely land up ejected from the cluster) in the future. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm')
-rw-r--r--fs/dlm/lowcomms.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 77720f8..1d4e644 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1451,14 +1451,16 @@ static void work_stop(void)
static int work_start(void)
{
int error;
- recv_workqueue = create_workqueue("dlm_recv");
+ recv_workqueue = alloc_workqueue("dlm_recv", WQ_MEM_RECLAIM |
+ WQ_HIGHPRI | WQ_FREEZEABLE, 0);
error = IS_ERR(recv_workqueue);
if (error) {
log_print("can't start dlm_recv %d", error);
return error;
}
- send_workqueue = create_singlethread_workqueue("dlm_send");
+ send_workqueue = alloc_workqueue("dlm_send", WQ_MEM_RECLAIM |
+ WQ_HIGHPRI | WQ_FREEZEABLE, 0);
error = IS_ERR(send_workqueue);
if (error) {
log_print("can't start dlm_send %d", error);
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