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authorTejun Heo <tj@kernel.org>2010-07-20 22:09:02 +0200
committerTejun Heo <tj@kernel.org>2010-07-23 13:14:25 +0200
commit6ecd7c2dd9f5dd4f6e8f65c8027159f9c73b0e4c (patch)
treeba12b0b9ba00e21ff73eee82714be448c5a7c6e9 /fs/gfs2/main.c
parent991ea75cb1df7188d209274b3d51c105b4f18ffe (diff)
gfs2: use workqueue instead of slow-work
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>
Diffstat (limited to 'fs/gfs2/main.c')
-rw-r--r--fs/gfs2/main.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index fb2a5f93b7c3..b1e9630eb46a 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -15,7 +15,6 @@
#include <linux/init.h>
#include <linux/gfs2_ondisk.h>
#include <asm/atomic.h>
-#include <linux/slow-work.h>
#include "gfs2.h"
#include "incore.h"
@@ -24,6 +23,7 @@
#include "util.h"
#include "glock.h"
#include "quota.h"
+#include "recovery.h"
static struct shrinker qd_shrinker = {
.shrink = gfs2_shrink_qd_memory,
@@ -138,9 +138,11 @@ static int __init init_gfs2_fs(void)
if (error)
goto fail_unregister;
- error = slow_work_register_user(THIS_MODULE);
- if (error)
- goto fail_slow;
+ error = -ENOMEM;
+ gfs_recovery_wq = alloc_workqueue("gfs_recovery",
+ WQ_NON_REENTRANT | WQ_RESCUER, 0);
+ if (!gfs_recovery_wq)
+ goto fail_wq;
gfs2_register_debugfs();
@@ -148,7 +150,7 @@ static int __init init_gfs2_fs(void)
return 0;
-fail_slow:
+fail_wq:
unregister_filesystem(&gfs2meta_fs_type);
fail_unregister:
unregister_filesystem(&gfs2_fs_type);
@@ -190,7 +192,7 @@ static void __exit exit_gfs2_fs(void)
gfs2_unregister_debugfs();
unregister_filesystem(&gfs2_fs_type);
unregister_filesystem(&gfs2meta_fs_type);
- slow_work_unregister_user(THIS_MODULE);
+ destroy_workqueue(gfs_recovery_wq);
kmem_cache_destroy(gfs2_quotad_cachep);
kmem_cache_destroy(gfs2_rgrpd_cachep);