Commit 4aa69d56 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: return early when trying to read null nid 



If get_node_page() gets zero nid, we can return early without getting a wrong
page. For example, get_dnode_of_data() can try to do that.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 2aadac08

fs/f2fs/node.c

+4 −0
Original line number Diff line number Diff line
@@ -1059,6 +1059,10 @@ struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) 
{

	struct page *page;

	int err;



	if (!nid)

		return ERR_PTR(-ENOENT);

	f2fs_bug_on(sbi, check_nid_range(sbi, nid));

repeat:

	page = grab_cache_page(NODE_MAPPING(sbi), nid);

	if (!page)