From: Ian Kent <raven@themaw.net>
Date: Sun, 1 May 2005 15:59:17 +0000 (-0700)
Subject: [PATCH] autofs4: tree race fix
X-Git-Tag: v2.6.12-rc4~136^2~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a9720ce73c9247e5262922d65e90444ea75eb50;p=pandora-kernel.git

[PATCH] autofs4: tree race fix

For tree mount maps, a call to chdir or chroot, to a directory above the
moint point directories at a certain time during the expire results in the
expire incorrectly thinking the tree is not busy.  This patch adds a check
to see if the filesystem above the tree mount points is busy and also locks
the filesystem during the tree mount expire to prevent the race.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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