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 513f03d823b69f7ed6411991843ec8229e2a3ed8..64ad5466887ff5f415eba85bbc0e7647ff0210bc 100644 (file)
--- 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);