tree 6d4b0c2c1ef1274a369dedca2e4ac417fef12236
parent 4f77c55c3ac232c4dfa308ce147d943b594a17ca
author Trond Myklebust <trond.myklebust@primarydata.com> 1486827458 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1489543366 +0800

nlm: Ensure callback code also checks that the files match

commit 251af29c320d86071664f02c76f0d063a19fefdf upstream.

It is not sufficient to just check that the lock pids match when
granting a callback, we also need to ensure that we're granting
the callback on the right file.

Reported-by: Pankaj Singh <psingh.ait@gmail.com>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>