From e1f5790e0588bc5b11eb57f95bfde8702049dd0d Mon Sep 17 00:00:00 2001
From: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Date: Thu, 8 Nov 2012 04:47:33 +0000
Subject: [PATCH] Btrfs: set hole punching time properly

Even if the hole punching is executed, the modification time of the
file is not updated.
So, current time is set to inode.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---
 fs/btrfs/file.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index d2df98124d0f..883cf826cf25 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1964,6 +1964,9 @@ out_trans:
 	if (!trans)
 		goto out_free;
 
+	inode_inc_iversion(inode);
+	inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+
 	trans->block_rsv = &root->fs_info->trans_block_rsv;
 	ret = btrfs_update_inode(trans, root, inode);
 	nr = trans->blocks_used;