From 692684e19e317a374c18e70a44d6413e51f71c11 Mon Sep 17 00:00:00 2001 From: Sunil Mushran Date: Fri, 19 Jun 2009 16:53:17 -0700 Subject: ocfs2: Stop orphan scan as early as possible during umount Currently if the orphan scan fires a tick before the user issues the umount, the umount will wait for the queued orphan scan tasks to complete. This patch makes the umount stop the orphan scan as early as possible so as to reduce the probability of the queued tasks slowing down the umount. Signed-off-by: Sunil Mushran Signed-off-by: Joel Becker --- fs/ocfs2/journal.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'fs/ocfs2/journal.c') diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index 4a3b9e6b31a..70215a21fb2 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -1880,6 +1880,9 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) os = &osb->osb_orphan_scan; + if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) + goto out; + status = ocfs2_orphan_scan_lock(osb, &seqno, DLM_LOCK_EX); if (status < 0) { if (status != -EAGAIN) @@ -1887,6 +1890,10 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) goto out; } + /* Do no queue the tasks if the volume is being umounted */ + if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) + goto unlock; + if (os->os_seqno != seqno) { os->os_seqno = seqno; goto unlock; @@ -1920,8 +1927,9 @@ void ocfs2_orphan_scan_work(struct work_struct *work) mutex_lock(&os->os_lock); ocfs2_queue_orphan_scan(osb); - schedule_delayed_work(&os->os_orphan_scan_work, - ocfs2_orphan_scan_timeout()); + if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) + schedule_delayed_work(&os->os_orphan_scan_work, + ocfs2_orphan_scan_timeout()); mutex_unlock(&os->os_lock); } @@ -1930,6 +1938,7 @@ void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) struct ocfs2_orphan_scan *os; os = &osb->osb_orphan_scan; + atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); mutex_lock(&os->os_lock); cancel_delayed_work(&os->os_orphan_scan_work); mutex_unlock(&os->os_lock); @@ -1940,6 +1949,7 @@ int ocfs2_orphan_scan_init(struct ocfs2_super *osb) struct ocfs2_orphan_scan *os; os = &osb->osb_orphan_scan; + atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE); os->os_osb = osb; os->os_count = 0; os->os_scantime = CURRENT_TIME; -- cgit v1.2.3