[PATCH] Revert bd_mount_mutex back to a semaphore

Revert bd_mount_mutex back to a semaphore so that xfs_freeze -f /mnt/newtest;
xfs_freeze -u /mnt/newtest works safely and doesn't produce lockdep warnings.

(XFS unlocks the semaphore from a different task, by design.  The mutex
code warns about this)

Signed-off-by: Dave Chinner <dgc@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 14a337cc3464..1410e5330c8d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -459,7 +459,7 @@ struct block_device {
         struct inode *          bd_inode;       /* will die */
         int                     bd_openers;
         struct mutex            bd_mutex;       /* open/close mutex */
-        struct mutex            bd_mount_mutex; /* mount mutex */
+        struct semaphore        bd_mount_sem;
         struct list_head        bd_inodes;
         void *                  bd_holder;
         int                     bd_holders;