From: NeilBrown <neilb@suse.de>
Date: Thu, 5 Apr 2007 02:08:18 +0000 (-0700)
Subject: [PATCH] md: avoid a deadlock when removing a device from an md array via sysfs
X-Git-Tag: v2.6.21-rc6~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5792a2856a63cdc568e08a7d6f9b2413d9217b3e;p=pandora-kernel.git

[PATCH] md: avoid a deadlock when removing a device from an md array via sysfs

A device can be removed from an md array via e.g.
  echo remove > /sys/block/md3/md/dev-sde/state

This will try to remove the 'dev-sde' subtree which will deadlock
since
  commit e7b0d26a86943370c04d6833c6edba2a72a6e240

With this patch we run the kobject_del via schedule_work so as to
avoid the deadlock.

Cc: Alan Stern <stern@rowland.harvard.edu>
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>
---

Reading git-diff-tree failed