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
--
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