Commit 4f54b0e9 authored May 23, 2008 by Dan Williams Committed by Linus Torvalds May 24, 2008

md: notify userspace on 'stop' events



This additional notification to 'array_state' is needed to allow the
monitor application to learn about stop events via sysfs.  The
sysfs_notify("sync_action") call that comes at the end of do_md_stop()
(via md_new_event) is insufficient since the 'sync_action' attribute has
been removed by this point.

(Seems like a sysfs-notify-on-removal patch is a better fix.  Currently
removal updates the event count but does not wake up waiters)

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 09a44cc1

drivers/md/md.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -3691,6 +3691,8 @@ static int do_md_stop(mddev_t * mddev, int mode)

		module_put(mddev->pers->owner);
		mddev->pers = NULL;
		/* tell userspace to handle 'inactive' */
		sysfs_notify(&mddev->kobj, NULL, "array_state");

		set_capacity(disk, 0);
		mddev->changed = 1;

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