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>

1 files changed, 3 insertions, 0 deletions

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;