From: Sachin Prabhu <spra...@redhat.com>
gfs2_lock() will skip locks on file which have 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. Such a lock will be skipped and will result in a
BUG in locks_remove_flock().
gfs2_lock() should skip the check for mandatory locks when unlocking a file.
Signed-off-by: Sachin Prabhu <spra...@redhat.com>
Signed-off-by: Steven Whitehouse <swhit...@redhat.com>
---
fs/gfs2/file.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index a6abbae..e6dd2ae 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -640,7 +640,7 @@ static int gfs2_lock(struct file *file, int cmd, struct
file_lock *fl)
if (!(fl->fl_flags & FL_POSIX))
return -ENOLCK;
- if (__mandatory_lock(&ip->i_inode))
+ if (__mandatory_lock(&ip->i_inode) && fl->fl_type != F_UNLCK)
return -ENOLCK;
if (cmd == F_CANCELLK) {
--
1.6.2.5
