tree 79d8d52914ed1f8a96f124f267ebe44c1630e3b4
parent f51a5a9de86a948b9a30daab90fb003f51446dcd
author Latchesar Ionkov <lucho@ionkov.net> 1177364471 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1177428188 -0700

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>