writeback: get rid of wbc->for_writepages

It's only set, it's never checked. Kill it.

Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index dd73d29c15a8..abc648f5de00 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1020,12 +1020,10 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc)
 
         if (wbc->nr_to_write <= 0)
                 return 0;
-        wbc->for_writepages = 1;
         if (mapping->a_ops->writepages)
                 ret = mapping->a_ops->writepages(mapping, wbc);
         else
                 ret = generic_writepages(mapping, wbc);
-        wbc->for_writepages = 0;
         return ret;
 }