summaryrefslogtreecommitdiffstats
path: root/fs/xfs
diff options
context:
space:
mode:
authorDave Chinner <david@fromorbit.com>2010-03-04 01:46:23 +0000
committerAlex Elder <aelder@sgi.com>2010-03-05 11:01:45 -0600
commit20f6b2c785cf187445f126321638ab8ba7aa7494 (patch)
treebf8ba702047ae78cffeac6fd97852bde3741621b /fs/xfs
parent694189328a7e566cb84bd3205503a42b60e87882 (diff)
downloadblackbird-op-linux-20f6b2c785cf187445f126321638ab8ba7aa7494.tar.gz
blackbird-op-linux-20f6b2c785cf187445f126321638ab8ba7aa7494.zip
xfs: check for more work before sleeping in xfssyncd
xfssyncd processes a queue of work by detaching the queue and then iterating over all the work items. It then sleeps for a time period or until new work comes in. If new work is queued while xfssyncd is actively processing the detached work queue, it will not process that new work until after a sleep timeout or the next work event queued wakes it. Fix this by checking the work queue again before going to sleep. Signed-off-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/linux-2.6/xfs_sync.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index f9fc154d9f72..05cd85317f6f 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -607,7 +607,8 @@ xfssyncd(
set_freezable();
timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10);
for (;;) {
- timeleft = schedule_timeout_interruptible(timeleft);
+ if (list_empty(&mp->m_sync_list))
+ timeleft = schedule_timeout_interruptible(timeleft);
/* swsusp */
try_to_freeze();
if (kthread_should_stop() && list_empty(&mp->m_sync_list))
@@ -627,8 +628,7 @@ xfssyncd(
list_add_tail(&mp->m_sync_work.w_list,
&mp->m_sync_list);
}
- list_for_each_entry_safe(work, n, &mp->m_sync_list, w_list)
- list_move(&work->w_list, &tmp);
+ list_splice_init(&mp->m_sync_list, &tmp);
spin_unlock(&mp->m_sync_lock);
list_for_each_entry_safe(work, n, &tmp, w_list) {
OpenPOWER on IntegriCloud