[PATCH] VFS: Fix memory leak with file leases
The patch
http://linux.bkbits.net:8080/linux-2.6/diffs/fs/locks.c@1.70??nav=index.html
introduced a pretty nasty memory leak in the lease code. When freeing
the lease, the code in locks_delete_lock() will correctly clean up
the fasync queue, but when we return to fcntl_setlease(), the freed
fasync entry will be reinstated.
This patch ensures that we skip the call to fasync_helper() when we're
freeing up the lease.
Signed-off-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/locks.c b/fs/locks.c
index a1e8b22..600d1fb 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1430,7 +1430,7 @@
lock_kernel();
error = __setlease(filp, arg, &flp);
- if (error)
+ if (error || arg == F_UNLCK)
goto out_unlock;
error = fasync_helper(fd, filp, 1, &flp->fl_fasync);