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>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index fbe5f3559..1fda3b286 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1181,6 +1181,11 @@ repeat:
 		err = -EIO;
 		goto out_err;
 	}
+
+	if (!f2fs_inode_chksum_verify(sbi, page)) {
+		err = -EBADMSG;
+		goto out_err;
+	}
 page_hit:
 	mark_page_accessed(page);
 
@@ -2295,6 +2300,8 @@ 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;