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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/incore.h
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@@ -12,7 +12,6 @@
#include <linux/fs.h>
#include <linux/workqueue.h>
#include <linux/slow-work.h>
#include <linux/dlm.h>
#include <linux/buffer_head.h>
@@ -383,7 +382,7 @@ struct gfs2_journal_extent {
struct gfs2_jdesc {
struct list_head jd_list;
struct list_head extent_list;
struct slow_work jd_work;
struct work_struct jd_work;
struct inode *jd_inode;
unsigned long jd_flags;
#define JDF_RECOVERY 1