CIFS: Turn lock mutex into rw semaphore

and allow several processes to walk through the lock list and read
can_cache_brlcks value if they are not going to modify them.

Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index e958d9438505..4cd68c77ce39 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -937,7 +937,7 @@ cifs_init_once(void *inode)
         struct cifsInodeInfo *cifsi = inode;
 
         inode_init_once(&cifsi->vfs_inode);
-        mutex_init(&cifsi->lock_mutex);
+        init_rwsem(&cifsi->lock_sem);
 }
 
 static int