From: Latchesar Ionkov <lucho@ionkov.net>
Date: Mon, 23 Apr 2007 21:41:11 +0000 (-0700)
Subject: v9fs: don't use primary fid when removing file
X-Git-Tag: v2.6.21~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c959df9f01cfb2f43b4d1f58631ee1e9c50541b6;p=pandora-kernel.git

v9fs: don't use primary fid when removing file

v9fs_insert uses v9fs_fid_lookup (which also locks the fid) to get the
primary fid associated with the dentry and destroys the v9fs_fid struct
after removing the file.  If another process called v9fs_fid_lookup on the
same dentry, it may wait undefinitely for the fid's lock (as the struct is
freed).

This patch changes v9fs_remove to use a cloned fid, so the primary fid is
not locked and freed.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Cc: Eric Van Hensbergen <ericvh@hera.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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