From: Li Zefan <lizf@cn.fujitsu.com>
Date: Sun, 18 Sep 2011 14:20:46 +0000 (-0400)
Subject: Btrfs: don't change inode flag of the dest clone file
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=dde820fbf7176b64daddc1856597d9c61dac19e2;p=linux-beck.git

Btrfs: don't change inode flag of the dest clone file

The dst file will have the same inode flags with dst file after
file clone, and I think it's unexpected.

For example, the dst file will suddenly become immutable after
getting some share of data with src file, if the src is immutable.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 1e766e86f334..9947a0ac7bd5 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2455,7 +2455,6 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
 			if (endoff > inode->i_size)
 				btrfs_i_size_write(inode, endoff);
 
-			BTRFS_I(inode)->flags = BTRFS_I(src)->flags;
 			ret = btrfs_update_inode(trans, root, inode);
 			BUG_ON(ret);
 			btrfs_end_transaction(trans, root);