[PATCH 1/2] f2fs: don't change wbc->sync_mode

From: Chao Yu
Date: Mon Jun 04 2018 - 11:22:48 EST


From: Chao Yu <yuchao0@xxxxxxxxxx>

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@xxxxxxxxxx>
---
fs/f2fs/node.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 513f03d823b6..64ad5466887f 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);
--
2.16.2.17.g38e79b1fd