writeback: writeback_inodes_sb() should use bdi_start_writeback()
Pointless to iterate other devices looking for a super, when
we have a bdi mapping.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 52aa545..fb61178 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -1206,7 +1206,7 @@
nr_to_write = nr_dirty + nr_unstable +
(inodes_stat.nr_inodes - inodes_stat.nr_unused);
- bdi_writeback_all(sb, nr_to_write);
+ bdi_start_writeback(sb->s_bdi, nr_to_write);
}
EXPORT_SYMBOL(writeback_inodes_sb);