From 704956ecf5bcdc14d14650f39f2b545b34c96265 Mon Sep 17 00:00:00 2001
From: Chao Yu <yuchao0@huawei.com>
Date: Mon, 31 Jul 2017 20:19:09 +0800
Subject: f2fs: support inode checksum

This patch adds to support inode checksum in f2fs.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: fix verification flow]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/node.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'fs/f2fs/node.c')

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 14b79a396a3f..0176035d8ced 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1171,6 +1171,11 @@ repeat:
 		err = -EIO;
 		goto out_err;
 	}
+
+	if (!f2fs_inode_chksum_verify(sbi, page)) {
+		err = -EBADMSG;
+		goto out_err;
+	}
 page_hit:
 	if(unlikely(nid != nid_of_node(page))) {
 		f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, "
@@ -2275,6 +2280,8 @@ retry:
 			F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
 								i_projid))
 			dst->i_projid = src->i_projid;
+
+		f2fs_inode_chksum_set(sbi, ipage);
 	}
 
 	new_ni = old_ni;
-- 
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