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| author | Tejun Heo <tj@kernel.org> | 2015-05-22 17:13:56 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-06-02 08:33:36 -0600 |
| commit | 001fe6f617b1a352ad29cc3643384b3d8141dc07 (patch) | |
| tree | 42dadb5be0402a3a3b2e6f49aff9a22ec3373e45 /fs/fs-writeback.c | |
| parent | f2b65121607631df0753eedd624262818707af32 (diff) | |
| download | lwn-001fe6f617b1a352ad29cc3643384b3d8141dc07.tar.gz lwn-001fe6f617b1a352ad29cc3643384b3d8141dc07.zip | |
writeback: make wakeup_dirtytime_writeback() handle multiple bdi_writeback's
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 <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/fs-writeback.c')
| -rw-r--r-- | fs/fs-writeback.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 508e10cc3fcd..8ae212e90ec3 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); |