f2fs: return -EIO when node id is not matched
During the cleaing of node segments, F2FS can get errored node blocks due to
data race between node page lock and its valid bitmap operations.
In that case, it needs to return an error to skip such the obsolete block copy.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index b2f28b3..0431f8e 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -958,7 +958,7 @@
goto got_it;
lock_page(page);
- if (unlikely(!PageUptodate(page))) {
+ if (unlikely(!PageUptodate(page) || nid != nid_of_node(page))) {
f2fs_put_page(page, 1);
return ERR_PTR(-EIO);
}
@@ -967,7 +967,6 @@
goto repeat;
}
got_it:
- f2fs_bug_on(nid != nid_of_node(page));
mark_page_accessed(page);
return page;
}