Commit c783946e authored Sep 19, 2018 by Jaegeuk Kim Committed by Greg Kroah-Hartman Nov 20, 2019

f2fs: avoid infinite loop in f2fs_alloc_nid



[ Upstream commit f84262b0862d43b71b3e80a036cdd9d82e620367 ]

If we have an error in f2fs_build_free_nids, we're able to fall into a loop
to find free nids.

Suggested-by: Chao Yu <chao@kernel.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent caab324d

fs/f2fs/node.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -2367,8 +2367,9 @@ bool f2fs_alloc_nid(struct f2fs_sb_info sbi, nid_t nid)
		spin_unlock(&nm_i->nid_list_lock);

		/* Let's scan nat pages and its caches to get free nids */
		f2fs_build_free_nids(sbi, true, false);
		if (!f2fs_build_free_nids(sbi, true, false))
		goto retry;
		return false;
		}

		/*