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| author | Kiyoshi Ueda <k-ueda@ct.jp.nec.com> | 2009-12-10 23:52:19 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-12-10 23:52:19 +0000 |
| commit | 6df400ab64c68fc4072a13019fc20fd7e3d51303 (patch) | |
| tree | 69a9e9060b6c8ad87acc3514d4c8981767efb3b5 /drivers/md | |
| parent | 7c6664114b7342a36f14a6836564e865669b3cea (diff) | |
| download | linux-6df400ab64c68fc4072a13019fc20fd7e3d51303.tar.gz linux-6df400ab64c68fc4072a13019fc20fd7e3d51303.tar.bz2 linux-6df400ab64c68fc4072a13019fc20fd7e3d51303.zip | |
dm mpath: flush workqueues before suspend completes
This patch stops the remaining dm-mpath activity during the suspend
sequence by flushing workqueues in postsuspend function.
The current dm-mpath target may not be quiet even after suspend completes
because some workqueues (e.g. device_handler's work, event handling)
are not flushed during the suspend sequence, even though suspended
devices/targets are supposed to be quiet in this state.
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-mpath.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index dce971dbdfa3..5b23f2df9bde 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -885,13 +885,18 @@ static int multipath_ctr(struct dm_target *ti, unsigned int argc, return r; } -static void multipath_dtr(struct dm_target *ti) +static void flush_multipath_work(void) { - struct multipath *m = (struct multipath *) ti->private; - flush_workqueue(kmpath_handlerd); flush_workqueue(kmultipathd); flush_scheduled_work(); +} + +static void multipath_dtr(struct dm_target *ti) +{ + struct multipath *m = ti->private; + + flush_multipath_work(); free_multipath(m); } @@ -1261,6 +1266,11 @@ static void multipath_presuspend(struct dm_target *ti) queue_if_no_path(m, 0, 1); } +static void multipath_postsuspend(struct dm_target *ti) +{ + flush_multipath_work(); +} + /* * Restore the queue_if_no_path setting. */ @@ -1567,13 +1577,14 @@ out: *---------------------------------------------------------------*/ static struct target_type multipath_target = { .name = "multipath", - .version = {1, 1, 0}, + .version = {1, 1, 1}, .module = THIS_MODULE, .ctr = multipath_ctr, .dtr = multipath_dtr, .map_rq = multipath_map, .rq_end_io = multipath_end_io, .presuspend = multipath_presuspend, + .postsuspend = multipath_postsuspend, .resume = multipath_resume, .status = multipath_status, .message = multipath_message, |