From a93a99838248bdab49db2eaac00236847670bc7f Mon Sep 17 00:00:00 2001
From: Junxiao Bi <junxiao.bi@oracle.com>
Date: Tue, 22 Dec 2015 08:06:08 -0600
Subject: [PATCH] gfs2: fix flock panic issue
Commit 4f6563677ae8 ("Move locks API users to locks_lock_inode_wait()")
moved flock/posix lock identify code to locks_lock_inode_wait(), but
missed to set fl_flags to FL_FLOCK which will cause kernel panic in
locks_lock_inode_wait().
Fixes: 4f6563677ae8 ("Move locks API users to locks_lock_inode_wait()")
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
---
fs/gfs2/file.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 860408053c95..7412863cda1e 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -1027,7 +1027,10 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
if (fl_gh->gh_state == state)
goto out;
locks_lock_file_wait(file,
- &(struct file_lock){.fl_type = F_UNLCK});
+ &(struct file_lock) {
+ .fl_type = F_UNLCK,
+ .fl_flags = FL_FLOCK
+ });
gfs2_glock_dq(fl_gh);
gfs2_holder_reinit(state, flags, fl_gh);
} else {