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dm ioctl: only issue uevent on resume if state changed 

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>
Cc: stable@kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Mike Snitzer 2010-03-06 02:32:24 +00:00 committed by Alasdair G Kergon
parent ede5ea0b8b
commit 0f3649a9e3
1 changed files with 5 additions and 4 deletions
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9
drivers/md/dm-ioctl.c
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@ -897,16 +897,17 @@ static int do_resume(struct dm_ioctl *param)
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;