From: Jeff Mahoney <jeffm@suse.com>
Date: Mon, 26 Jun 2006 07:27:24 +0000 (-0700)
Subject: [PATCH] dm: fix mapped device ref counting
X-Git-Tag: v2.6.18-rc1~664
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7ec75f254742766eb729f1d1024a5b4e6692fc5f;p=pandora-kernel.git

[PATCH] dm: fix mapped device ref counting

To avoid races, _minor_lock must be held while changing mapped device
reference counts.

There are a few paths where a mapped_device pointer is returned before a
reference is taken.  This patch fixes them.

[akpm: too late for 2.6.17 - suitable for 2.6.17.x after it has settled]

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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