From: Yunlei He <heyunlei@huawei.com>
Date: Thu, 11 Jan 2018 06:19:32 +0000 (+0800)
Subject: f2fs: check node page again in write end io
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7dff55d27e07c571b6c532b714c22d7ce9fba1e0;p=openwrt%2Fstaging%2Fblogic.git

f2fs: check node page again in write end io

Check node page again in write end io in case of
data corruption during inflght IO.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 304b899a6892..31add841ec39 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -114,6 +114,10 @@ static void f2fs_write_end_io(struct bio *bio)
 			if (type == F2FS_WB_CP_DATA)
 				f2fs_stop_checkpoint(sbi, true);
 		}
+
+		f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) &&
+					page->index != nid_of_node(page));
+
 		dec_page_count(sbi, type);
 		clear_cold_data(page);
 		end_page_writeback(page);