cifs: handle lease F_UNLCK requests properly

Currently any F_UNLCK request for a lease just gets back -EAGAIN. Allow
them to go immediately to generic_setlease instead.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Steve French <smfrench@gmail.com>

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 8883980..0a4a4d7 100644 (file)
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -812,8 +812,9 @@ static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
        if (!(S_ISREG(inode->i_mode)))
                return -EINVAL;
 
-       /* check if file is oplocked */
-       if (((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) ||
+       /* Check if file is oplocked if this is request for new lease */
+       if (arg == F_UNLCK ||
+           ((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) ||
            ((arg == F_WRLCK) && CIFS_CACHE_WRITE(CIFS_I(inode))))
                return generic_setlease(file, arg, lease);
        else if (tlink_tcon(cfile->tlink)->local_lease &&