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afs: add afs_wq and use it instead of the system workqueue

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flush_scheduled_work() is going away.  afs needs to make sure all the
works it has queued have finished before being unloaded and there can
be arbitrary number of pending works.  Add afs_wq and use it as the
flush domain instead of the system workqueue.

Also, convert cancel_delayed_work() + flush_scheduled_work() to
cancel_delayed_work_sync() in afs_mntpt_kill_timer().

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: linux-afs@lists.infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Tejun Heo
2011-01-14 15:56:37 +00:00
committed by Linus Torvalds
parent e1fcc7e2a7
commit 0ad53eeefc
7 changed files with 38 additions and 28 deletions
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13
fs/afs/server.c
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@@ -238,8 +238,8 @@ void afs_put_server(struct afs_server *server)
if (atomic_read(&server->usage) == 0) {
list_move_tail(&server->grave, &afs_server_graveyard);
server->time_of_death = get_seconds();
schedule_delayed_work(&afs_server_reaper,
afs_server_timeout * HZ);
queue_delayed_work(afs_wq, &afs_server_reaper,
afs_server_timeout * HZ);
}
spin_unlock(&afs_server_graveyard_lock);
_leave(" [dead]");
@@ -285,10 +285,11 @@ static void afs_reap_server(struct work_struct *work)
expiry = server->time_of_death + afs_server_timeout;
if (expiry > now) {
delay = (expiry - now) * HZ;
if (!schedule_delayed_work(&afs_server_reaper, delay)) {
if (!queue_delayed_work(afs_wq, &afs_server_reaper,
delay)) {
cancel_delayed_work(&afs_server_reaper);
schedule_delayed_work(&afs_server_reaper,
delay);
queue_delayed_work(afs_wq, &afs_server_reaper,
delay);
}
break;
}
@@ -323,5 +324,5 @@ void __exit afs_purge_servers(void)
{
afs_server_timeout = 0;
cancel_delayed_work(&afs_server_reaper);
schedule_delayed_work(&afs_server_reaper, 0);
queue_delayed_work(afs_wq, &afs_server_reaper, 0);
}