cifs: handle lease F_UNLCK requests properly
authorJeff Layton <jlayton@primarydata.com>
Sat, 9 Aug 2014 14:16:44 +0000 (10:16 -0400)
committerSteve French <smfrench@gmail.com>
Sat, 16 Aug 2014 04:01:52 +0000 (23:01 -0500)
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>
fs/cifs/cifsfs.c

index 88839806742007ca8dfaf8d77754695d4924fef9..0a4a4d7d407efeb4299b73e1f366013b65c33523 100644 (file)
@@ -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 &&