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Subject[patch 114/123] dm ioctl: only issue uevent on resume if state changed
2.6.33-stable review patch.  If anyone has any objections, please let me know.

-----------------

From: Mike Snitzer <snitzer@redhat.com>

commit 0f3649a9e305ea22eb196a84a2d7520afcaa6060 upstream.

Only issue a uevent on a resume if the state of the device changed,
i.e. if it was suspended and/or its table was replaced.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/md/dm-ioctl.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -897,16 +897,17 @@ static int do_resume(struct dm_ioctl *pa
set_disk_ro(dm_disk(md), 1);
}

- if (dm_suspended_md(md))
+ if (dm_suspended_md(md)) {
r = dm_resume(md);
+ if (!r)
+ dm_kobject_uevent(md, KOBJ_CHANGE, param->event_nr);
+ }

if (old_map)
dm_table_destroy(old_map);

- if (!r) {
- dm_kobject_uevent(md, KOBJ_CHANGE, param->event_nr);
+ if (!r)
r = __dev_status(md, param);
- }

dm_put(md);
return r;



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