From: Christoph Hellwig <hch@lst.de>
Date: Thu, 20 Oct 2016 04:48:54 +0000 (+1100)
Subject: xfs: remove the same fs check from xfs_file_share_range
X-Git-Tag: v4.9-rc3~32^2~16
X-Git-Url: http://git.cascardo.eti.br/?a=commitdiff_plain;h=4fbc2c65255f77b315a4ee3ccac397d677a35737;p=cascardo%2Flinux.git

xfs: remove the same fs check from xfs_file_share_range

The VFS already does the check, and the placement of this duplicate
is in the way of the following locking rework.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 0dc9971d3c84..194f8f396e4d 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -965,9 +965,6 @@ xfs_file_share_range(
 	    IS_SWAPFILE(inode_out))
 		return -ETXTBSY;
 
-	/* Reflink only works within this filesystem. */
-	if (inode_in->i_sb != inode_out->i_sb)
-		return -EXDEV;
 	same_inode = (inode_in->i_ino == inode_out->i_ino);
 
 	/* Don't reflink dirs, pipes, sockets... */