From: Chao Yu <yuchao0@huawei.com>
Date: Mon, 4 Jun 2018 15:20:35 +0000 (+0800)
Subject: f2fs: don't change wbc->sync_mode
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6cf9490912e1;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

f2fs: don't change wbc->sync_mode

We should never falsify wbc->sync_mode passed from mm, otherwise
mm can trigger writeback with wrong IO priority.

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

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 6148175da92f..f18b4ce95c21 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1741,7 +1741,6 @@ static int f2fs_write_node_pages(struct address_space *mapping,
 	trace_f2fs_writepages(mapping->host, wbc, NODE);
 
 	diff = nr_pages_to_write(sbi, NODE, wbc);
-	wbc->sync_mode = WB_SYNC_NONE;
 	blk_start_plug(&plug);
 	f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO);
 	blk_finish_plug(&plug);