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gfs2: use workqueue instead of slow-work

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Workqueue can now handle high concurrency.  Convert gfs to use
workqueue instead of slow-work.

* Steven pointed out that recovery path might be run from allocation
  path and thus requires forward progress guarantee without memory
  allocation.  Create and use gfs_recovery_wq with rescuer.  Please
  note that forward progress wasn't guaranteed with slow-work.

* Updated to use non-reentrant workqueue.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Tejun Heo
2010-07-20 22:09:02 +02:00
parent 991ea75cb1
commit 6ecd7c2dd9
7 changed files with 40 additions and 49 deletions
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3
fs/gfs2/sys.c
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@@ -25,6 +25,7 @@
#include "quota.h"
#include "util.h"
#include "glops.h"
#include "recovery.h"
struct gfs2_attr {
struct attribute attr;
@@ -352,7 +353,7 @@ static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
if (jd->jd_jid != jid)
continue;
rv = slow_work_enqueue(&jd->jd_work);
rv = gfs2_recover_journal(jd, false);
break;
}
out: