[PATCH] Skip check for mandatory locks when unlocking

ocfs2_lock() will skip locks on file which has mode set to 02666. This
is a problem in cases where the mode of the file is changed after a
process has obtained a lock on the file.

ocfs2_lock() should skip the check for mandatory locks when unlocking a
file.

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>

diff --git a/fs/ocfs2/locks.c b/fs/ocfs2/locks.c
index 544ac62..b5cb3ed 100644 (file)
--- a/fs/ocfs2/locks.c
+++ b/fs/ocfs2/locks.c
@@ -133,7 +133,7 @@ int ocfs2_lock(struct file *file, int cmd, struct file_lock *fl)
 
        if (!(fl->fl_flags & FL_POSIX))
                return -ENOLCK;
-       if (__mandatory_lock(inode))
+       if (__mandatory_lock(inode) && fl->fl_type != F_UNLCK)
                return -ENOLCK;
 
        return ocfs2_plock(osb->cconn, OCFS2_I(inode)->ip_blkno, file, cmd, fl);