CIFS: Fix the VFS brlock cache usage in posix locking case

Request to the cache in FL_POSIX case only.

Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <smfrench@gmail.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 91e05f2f0acf..c1f063cd1b0c 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -793,6 +793,9 @@ cifs_posix_lock_test(struct file *file, struct file_lock *flock)
         struct cifsInodeInfo *cinode = CIFS_I(file->f_path.dentry->d_inode);
         unsigned char saved_type = flock->fl_type;
 
+        if ((flock->fl_flags & FL_POSIX) == 0)
+                return 1;
+
         mutex_lock(&cinode->lock_mutex);
         posix_test_lock(file, flock);
 
@@ -809,12 +812,15 @@ static int
 cifs_posix_lock_set(struct file *file, struct file_lock *flock)
 {
         struct cifsInodeInfo *cinode = CIFS_I(file->f_path.dentry->d_inode);
-        int rc;
+        int rc = 1;
+
+        if ((flock->fl_flags & FL_POSIX) == 0)
+                return rc;
 
         mutex_lock(&cinode->lock_mutex);
         if (!cinode->can_cache_brlcks) {
                 mutex_unlock(&cinode->lock_mutex);
-                return 1;
+                return rc;
         }
         rc = posix_lock_file_wait(file, flock);
         mutex_unlock(&cinode->lock_mutex);