writeback: add wbc_to_write_flags()

Add wbc_to_write_flags(), which returns the write modifier flags to use,
based on a struct writeback_control. No functional changes in this
patch, but it prepares us for factoring other wbc fields for write type.

Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/mpage.c b/fs/mpage.c
index f35e2819d0c6..98fc11aa7e0b 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -489,7 +489,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
         struct buffer_head map_bh;
         loff_t i_size = i_size_read(inode);
         int ret = 0;
-        int op_flags = (wbc->sync_mode == WB_SYNC_ALL ? REQ_SYNC : 0);
+        int op_flags = wbc_to_write_flags(wbc);
 
         if (page_has_buffers(page)) {
                 struct buffer_head *head = page_buffers(page);