[PATCH 2/2] f2fs: don't check inode's checksum if it was dirtied or writebacked

[Jaegeuk Kim]

If another thread already made the page dirtied or writebacked, we must avoid
to verify checksum. If we got an error, we need to remove its uptodate as well.

Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
 fs/f2fs/inode.c | 3 ++-
 fs/f2fs/node.c  | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index b4c401d456e7..c33b05aec1a1 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -153,7 +153,8 @@ bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, 
struct page *page)
        struct f2fs_inode *ri;
        __u32 provided, calculated;
 
-       if (!f2fs_enable_inode_chksum(sbi, page))
+       if (!f2fs_enable_inode_chksum(sbi, page) ||
+                       PageDirty(page) || PageWriteback(page))
                return true;
 
        ri = &F2FS_NODE(page)->i;
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 388a00262a5f..fca87835a1da 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1187,9 +1187,9 @@ static struct page *__get_node_page(struct f2fs_sb_info 
*sbi, pgoff_t nid,
                        nid, nid_of_node(page), ino_of_node(page),
                        ofs_of_node(page), cpver_of_node(page),
                        next_blkaddr_of_node(page));
-               ClearPageUptodate(page);
                err = -EINVAL;
 out_err:
+               ClearPageUptodate(page);
                f2fs_put_page(page, 1);
                return ERR_PTR(err);
        }
-- 
2.14.0.rc1.383.gd1ce394fe2-goog