[RFC PATCH 07/35] ovl: copy up file size as well

[Miklos Szeredi]

Copy i_size of the underlying inode to the overlay inode in ovl_copyattr().

This is in preparation for stacking I/O operations on overlay files.

This patch shouldn't have any observable effect.

Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
---
 fs/overlayfs/overlayfs.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index 265cb288417a..10f5f3bf9d96 100644
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -9,6 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/uuid.h>
+#include <linux/fs.h>
 #include "ovl_entry.h"
 
 enum ovl_path_type {
@@ -355,6 +356,7 @@ static inline void ovl_copyattr(struct inode *from, struct inode *to)
 	to->i_atime = from->i_atime;
 	to->i_mtime = from->i_mtime;
 	to->i_ctime = from->i_ctime;
+	i_size_write(to, i_size_read(from));
 }
 
 static inline void ovl_copyflags(struct inode *from, struct inode *to)
-- 
2.14.3