From: Tejun Heo <tj@kernel.org>
To: Jan Kara <jack@suse.cz>
Cc: axboe@kernel.dk, linux-kernel@vger.kernel.org, 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,
Jaegeuk Kim <jaegeuk@kernel.org>,
Steven Whitehouse <swhiteho@redhat.com>
Subject: Re: [PATCH 13/49] writeback: move bandwidth related fields from backing_dev_info into bdi_writeback
Date: Mon, 20 Apr 2015 14:01:20 -0400 [thread overview]
Message-ID: <20150420180120.GC4206@htj.duckdns.org> (raw)
In-Reply-To: <20150420150950.GB17020@quack.suse.cz>
On Mon, Apr 20, 2015 at 05:09:50PM +0200, Jan Kara wrote:
> On Mon 06-04-15 15:58:02, Tejun Heo wrote:
> > Currently, a bdi (backing_dev_info) embeds single wb (bdi_writeback)
> > and the role of the separation is unclear. For cgroup support for
> > writeback IOs, a bdi will be updated to host multiple wb's where each
> > wb serves writeback IOs of a different cgroup on the bdi. To achieve
> > that, a wb should carry all states necessary for servicing writeback
> > IOs for a cgroup independently.
> >
> > This patch moves bandwidth related fields from backing_dev_info into
> > bdi_writeback.
> >
> > * The moved fields are: bw_time_stamp, dirtied_stamp, written_stamp,
> > write_bandwidth, avg_write_bandwidth, dirty_ratelimit,
> > balanced_dirty_ratelimit, completions and dirty_exceeded.
> >
> > * writeback_chunk_size() and over_bgroup_thresh() now take @wb instead
> > of @bdi.
> ^^^ over_bground_thresh()
>
> Otherwise the patch looks good to me. You can add:
Updated accordingly.
> Reviewed-by: Jan Kara <jack@suse.cz>
Thanks.
--
tejun
WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Jan Kara <jack@suse.cz>
Cc: axboe@kernel.dk, linux-kernel@vger.kernel.org, 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,
Jaegeuk Kim <jaegeuk@kernel.org>,
Steven Whitehouse <swhiteho@redhat.com>
Subject: Re: [PATCH 13/49] writeback: move bandwidth related fields from backing_dev_info into bdi_writeback
Date: Mon, 20 Apr 2015 14:01:20 -0400 [thread overview]
Message-ID: <20150420180120.GC4206@htj.duckdns.org> (raw)
In-Reply-To: <20150420150950.GB17020@quack.suse.cz>
On Mon, Apr 20, 2015 at 05:09:50PM +0200, Jan Kara wrote:
> On Mon 06-04-15 15:58:02, Tejun Heo wrote:
> > Currently, a bdi (backing_dev_info) embeds single wb (bdi_writeback)
> > and the role of the separation is unclear. For cgroup support for
> > writeback IOs, a bdi will be updated to host multiple wb's where each
> > wb serves writeback IOs of a different cgroup on the bdi. To achieve
> > that, a wb should carry all states necessary for servicing writeback
> > IOs for a cgroup independently.
> >
> > This patch moves bandwidth related fields from backing_dev_info into
> > bdi_writeback.
> >
> > * The moved fields are: bw_time_stamp, dirtied_stamp, written_stamp,
> > write_bandwidth, avg_write_bandwidth, dirty_ratelimit,
> > balanced_dirty_ratelimit, completions and dirty_exceeded.
> >
> > * writeback_chunk_size() and over_bgroup_thresh() now take @wb instead
> > of @bdi.
> ^^^ over_bground_thresh()
>
> Otherwise the patch looks good to me. You can add:
Updated accordingly.
> Reviewed-by: Jan Kara <jack@suse.cz>
Thanks.
--
tejun
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next prev parent reply other threads:[~2015-04-20 18:01 UTC|newest]
Thread overview: 144+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-06 19:57 [PATCHSET 1/3 v3 block/for-4.1/core] writeback: cgroup writeback support Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 01/49] memcg: add per cgroup dirty page accounting Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 02/49] blkcg: move block/blk-cgroup.h to include/linux/blk-cgroup.h Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 03/49] update !CONFIG_BLK_CGROUP dummies in include/linux/blk-cgroup.h Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 04/49] blkcg: always create the blkcg_gq for the root blkcg Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 05/49] memcg: add mem_cgroup_root_css Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 06/49] blkcg: add blkcg_root_css Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 07/49] cgroup, block: implement task_get_css() and use it in bio_associate_current() Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 08/49] blkcg: implement task_get_blkcg_css() Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 09/49] blkcg: implement bio_associate_blkcg() Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:57 ` [PATCH 10/49] memcg: implement mem_cgroup_css_from_page() Tejun Heo
2015-04-06 19:57 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 11/49] writeback: move backing_dev_info->state into bdi_writeback Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-20 15:32 ` Jan Kara
2015-04-20 15:32 ` Jan Kara
2015-04-06 19:58 ` [PATCH 12/49] writeback: move backing_dev_info->bdi_stat[] " Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-20 15:02 ` Jan Kara
2015-04-20 15:02 ` Jan Kara
2015-04-20 17:56 ` Tejun Heo
2015-04-20 17:56 ` Tejun Heo
2015-04-20 17:56 ` Tejun Heo
2015-04-21 8:51 ` Jan Kara
2015-04-21 8:51 ` Jan Kara
2015-04-21 8:51 ` Jan Kara
2015-04-21 15:02 ` Tejun Heo
2015-04-21 15:02 ` Tejun Heo
2015-04-21 15:05 ` Jan Kara
2015-04-21 15:05 ` Jan Kara
2015-04-21 15:05 ` Jan Kara
2015-04-06 19:58 ` [PATCH 13/49] writeback: move bandwidth related fields from backing_dev_info " Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-20 15:09 ` Jan Kara
2015-04-20 15:09 ` Jan Kara
2015-04-20 18:01 ` Tejun Heo [this message]
2015-04-20 18:01 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 14/49] writeback: s/bdi/wb/ in mm/page-writeback.c Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-20 15:18 ` Jan Kara
2015-04-20 15:18 ` Jan Kara
2015-04-06 19:58 ` [PATCH 15/49] writeback: move backing_dev_info->wb_lock and ->worklist into bdi_writeback Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-20 15:32 ` Jan Kara
2015-04-20 15:32 ` Jan Kara
2015-04-20 15:32 ` Jan Kara
2015-04-20 18:17 ` Tejun Heo
2015-04-20 18:17 ` Tejun Heo
2015-04-21 8:59 ` Jan Kara
2015-04-21 8:59 ` Jan Kara
2015-04-21 8:59 ` Jan Kara
2015-04-06 19:58 ` [PATCH 16/49] writeback: reorganize mm/backing-dev.c Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-20 15:34 ` Jan Kara
2015-04-20 15:34 ` Jan Kara
2015-04-20 15:34 ` Jan Kara
2015-04-06 19:58 ` [PATCH 17/49] writeback: separate out include/linux/backing-dev-defs.h Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-20 15:37 ` Jan Kara
2015-04-20 15:37 ` Jan Kara
2015-04-06 19:58 ` [PATCH 18/49] bdi: make inode_to_bdi() inline Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-20 15:40 ` Jan Kara
2015-04-20 15:40 ` Jan Kara
2015-04-20 15:40 ` Jan Kara
2015-04-20 18:21 ` Tejun Heo
2015-04-20 18:21 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 19/49] writeback: add @gfp to wb_init() Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-20 15:41 ` Jan Kara
2015-04-20 15:41 ` Jan Kara
2015-04-06 19:58 ` [PATCH 20/49] bdi: separate out congested state into a separate struct Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-21 14:36 ` Jan Kara
2015-04-21 14:36 ` Jan Kara
2015-04-06 19:58 ` [PATCH 21/49] writeback: add {CONFIG|BDI_CAP|FS}_CGROUP_WRITEBACK Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 22/49] writeback: make backing_dev_info host cgroup-specific bdi_writebacks Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 23/49] writeback, blkcg: associate each blkcg_gq with the corresponding bdi_writeback_congested Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 24/49] writeback: attribute stats to the matching per-cgroup bdi_writeback Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 25/49] writeback: let balance_dirty_pages() work on the matching cgroup bdi_writeback Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 26/49] writeback: make congestion functions per bdi_writeback Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 27/49] writeback, blkcg: restructure blk_{set|clear}_queue_congested() Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 28/49] writeback, blkcg: propagate non-root blkcg congestion state Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 29/49] writeback: implement and use inode_congested() Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 30/49] writeback: implement WB_has_dirty_io wb_state flag Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 31/49] writeback: implement backing_dev_info->tot_write_bandwidth Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 32/49] writeback: make bdi_has_dirty_io() take multiple bdi_writeback's into account Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 33/49] writeback: don't issue wb_writeback_work if clean Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 34/49] writeback: make bdi->min/max_ratio handling cgroup writeback aware Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 35/49] writeback: implement bdi_for_each_wb() Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 36/49] writeback: remove bdi_start_writeback() Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 37/49] writeback: make laptop_mode_timer_fn() handle multiple bdi_writeback's Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 38/49] writeback: make writeback_in_progress() take bdi_writeback instead of backing_dev_info Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 39/49] writeback: make bdi_start_background_writeback() " Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 40/49] writeback: make wakeup_flusher_threads() handle multiple bdi_writeback's Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 41/49] writeback: add wb_writeback_work->auto_free Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 42/49] writeback: implement bdi_wait_for_completion() Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 43/49] writeback: implement wb_wait_for_single_work() Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 44/49] writeback: restructure try_writeback_inodes_sb[_nr]() Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 45/49] writeback: make writeback initiation functions handle multiple bdi_writeback's Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 46/49] writeback: dirty inodes against their matching cgroup bdi_writeback's Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 47/49] buffer, writeback: make __block_write_full_page() honor cgroup writeback Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 48/49] mpage: make __mpage_writepage() " Tejun Heo
2015-04-06 19:58 ` Tejun Heo
2015-04-06 19:58 ` [PATCH 49/49] ext2: enable cgroup writeback support Tejun Heo
2015-04-06 19:58 ` Tejun Heo
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