From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: [PATCH 42/51] writeback: make wakeup_dirtytime_writeback() handle multiple bdi_writeback's Date: Fri, 22 May 2015 17:13:56 -0400 Message-ID: <1432329245-5844-43-git-send-email-tj@kernel.org> References: <1432329245-5844-1-git-send-email-tj@kernel.org> Cc: linux-kernel@vger.kernel.org, jack@suse.cz, hch@infradead.org, hannes@cmpxchg.org, linux-fsdevel@vger.kernel.org, vgoyal@redhat.com, lizefan@huawei.com, cgroups@vger.kernel.org, linux-mm@kvack.org, mhocko@suse.cz, clm@fb.com, fengguang.wu@intel.com, david@fromorbit.com, gthelen@google.com, khlebnikov@yandex-team.ru, Tejun Heo , Theodore Ts'o To: axboe@kernel.dk Return-path: In-Reply-To: <1432329245-5844-1-git-send-email-tj@kernel.org> Sender: owner-linux-mm@kvack.org List-Id: linux-fsdevel.vger.kernel.org wakeup_dirtytime_writeback() currently only starts writeback on the root wb (bdi_writeback). For cgroup writeback support, update the function to check all wbs. Signed-off-by: Tejun Heo Cc: Jens Axboe Cc: Jan Kara Cc: Theodore Ts'o --- fs/fs-writeback.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 508e10c..8ae212e 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -1260,9 +1260,12 @@ static void wakeup_dirtytime_writeback(struct work_struct *w) rcu_read_lock(); list_for_each_entry_rcu(bdi, &bdi_list, bdi_list) { - if (list_empty(&bdi->wb.b_dirty_time)) - continue; - wb_wakeup(&bdi->wb); + struct bdi_writeback *wb; + struct wb_iter iter; + + bdi_for_each_wb(wb, bdi, &iter, 0) + if (!list_empty(&bdi->wb.b_dirty_time)) + wb_wakeup(&bdi->wb); } rcu_read_unlock(); schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ); -- 2.4.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org