From: Jan Kara <jack@suse.cz>
To: Tejun Heo <tj@kernel.org>
Cc: axboe@kernel.dk, 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
Subject: Re: [PATCH 34/51] writeback: don't issue wb_writeback_work if clean
Date: Tue, 30 Jun 2015 18:18:03 +0200 [thread overview]
Message-ID: <20150630161803.GS7252@quack.suse.cz> (raw)
In-Reply-To: <1432329245-5844-35-git-send-email-tj@kernel.org>
On Fri 22-05-15 17:13:48, Tejun Heo wrote:
> There are several places in fs/fs-writeback.c which queues
> wb_writeback_work without checking whether the target wb
> (bdi_writeback) has dirty inodes or not. The only thing
> wb_writeback_work does is writing back the dirty inodes for the target
> wb and queueing a work item for a clean wb is essentially noop. There
> are some side effects such as bandwidth stats being updated and
> triggering tracepoints but these don't affect the operation in any
> meaningful way.
>
> This patch makes all writeback_inodes_sb_nr() and sync_inodes_sb()
> skip wb_queue_work() if the target bdi is clean. Also, it moves
> dirtiness check from wakeup_flusher_threads() to
> __wb_start_writeback() so that all its callers benefit from the check.
>
> While the overhead incurred by scheduling a noop work isn't currently
> significant, the overhead may be higher with cgroup writeback support
> as we may end up issuing noop work items to a lot of clean wb's.
>
> Signed-off-by: Tejun Heo <tj@kernel.org>
> Cc: Jens Axboe <axboe@kernel.dk>
> Cc: Jan Kara <jack@suse.cz>
Looks good. You can add:
Reviewed-by: Jan Kara <jack@suse.com>
Honza
> ---
> fs/fs-writeback.c | 18 ++++++++++--------
> 1 file changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index c98d392..921a9e4 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -189,6 +189,9 @@ static void __wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
> {
> struct wb_writeback_work *work;
>
> + if (!wb_has_dirty_io(wb))
> + return;
> +
> /*
> * This is WB_SYNC_NONE writeback, so if allocation fails just
> * wakeup the thread for old dirty data writeback
> @@ -1215,11 +1218,8 @@ void wakeup_flusher_threads(long nr_pages, enum wb_reason reason)
> nr_pages = get_nr_dirty_pages();
>
> rcu_read_lock();
> - list_for_each_entry_rcu(bdi, &bdi_list, bdi_list) {
> - if (!bdi_has_dirty_io(bdi))
> - continue;
> + list_for_each_entry_rcu(bdi, &bdi_list, bdi_list)
> __wb_start_writeback(&bdi->wb, nr_pages, false, reason);
> - }
> rcu_read_unlock();
> }
>
> @@ -1512,11 +1512,12 @@ void writeback_inodes_sb_nr(struct super_block *sb,
> .nr_pages = nr,
> .reason = reason,
> };
> + struct backing_dev_info *bdi = sb->s_bdi;
>
> - if (sb->s_bdi == &noop_backing_dev_info)
> + if (!bdi_has_dirty_io(bdi) || bdi == &noop_backing_dev_info)
> return;
> WARN_ON(!rwsem_is_locked(&sb->s_umount));
> - wb_queue_work(&sb->s_bdi->wb, &work);
> + wb_queue_work(&bdi->wb, &work);
> wait_for_completion(&done);
> }
> EXPORT_SYMBOL(writeback_inodes_sb_nr);
> @@ -1594,13 +1595,14 @@ void sync_inodes_sb(struct super_block *sb)
> .reason = WB_REASON_SYNC,
> .for_sync = 1,
> };
> + struct backing_dev_info *bdi = sb->s_bdi;
>
> /* Nothing to do? */
> - if (sb->s_bdi == &noop_backing_dev_info)
> + if (!bdi_has_dirty_io(bdi) || bdi == &noop_backing_dev_info)
> return;
> WARN_ON(!rwsem_is_locked(&sb->s_umount));
>
> - wb_queue_work(&sb->s_bdi->wb, &work);
> + wb_queue_work(&bdi->wb, &work);
> wait_for_completion(&done);
>
> wait_sb_inodes(sb);
> --
> 2.4.0
>
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
WARNING: multiple messages have this Message-ID (diff)
From: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
To: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
jack-AlSwsSmVLrQ@public.gmane.org,
hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
mhocko-AlSwsSmVLrQ@public.gmane.org,
clm-b10kYP2dOMg@public.gmane.org,
fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
david-FqsqvQoI3Ljby3iVrkZq2A@public.gmane.org,
gthelen-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
khlebnikov-XoJtRXgx1JseBXzfvpsJ4g@public.gmane.org
Subject: Re: [PATCH 34/51] writeback: don't issue wb_writeback_work if clean
Date: Tue, 30 Jun 2015 18:18:03 +0200 [thread overview]
Message-ID: <20150630161803.GS7252@quack.suse.cz> (raw)
In-Reply-To: <1432329245-5844-35-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
On Fri 22-05-15 17:13:48, Tejun Heo wrote:
> There are several places in fs/fs-writeback.c which queues
> wb_writeback_work without checking whether the target wb
> (bdi_writeback) has dirty inodes or not. The only thing
> wb_writeback_work does is writing back the dirty inodes for the target
> wb and queueing a work item for a clean wb is essentially noop. There
> are some side effects such as bandwidth stats being updated and
> triggering tracepoints but these don't affect the operation in any
> meaningful way.
>
> This patch makes all writeback_inodes_sb_nr() and sync_inodes_sb()
> skip wb_queue_work() if the target bdi is clean. Also, it moves
> dirtiness check from wakeup_flusher_threads() to
> __wb_start_writeback() so that all its callers benefit from the check.
>
> While the overhead incurred by scheduling a noop work isn't currently
> significant, the overhead may be higher with cgroup writeback support
> as we may end up issuing noop work items to a lot of clean wb's.
>
> Signed-off-by: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
> Cc: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
Looks good. You can add:
Reviewed-by: Jan Kara <jack-IBi9RG/b67k@public.gmane.org>
Honza
> ---
> fs/fs-writeback.c | 18 ++++++++++--------
> 1 file changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index c98d392..921a9e4 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -189,6 +189,9 @@ static void __wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
> {
> struct wb_writeback_work *work;
>
> + if (!wb_has_dirty_io(wb))
> + return;
> +
> /*
> * This is WB_SYNC_NONE writeback, so if allocation fails just
> * wakeup the thread for old dirty data writeback
> @@ -1215,11 +1218,8 @@ void wakeup_flusher_threads(long nr_pages, enum wb_reason reason)
> nr_pages = get_nr_dirty_pages();
>
> rcu_read_lock();
> - list_for_each_entry_rcu(bdi, &bdi_list, bdi_list) {
> - if (!bdi_has_dirty_io(bdi))
> - continue;
> + list_for_each_entry_rcu(bdi, &bdi_list, bdi_list)
> __wb_start_writeback(&bdi->wb, nr_pages, false, reason);
> - }
> rcu_read_unlock();
> }
>
> @@ -1512,11 +1512,12 @@ void writeback_inodes_sb_nr(struct super_block *sb,
> .nr_pages = nr,
> .reason = reason,
> };
> + struct backing_dev_info *bdi = sb->s_bdi;
>
> - if (sb->s_bdi == &noop_backing_dev_info)
> + if (!bdi_has_dirty_io(bdi) || bdi == &noop_backing_dev_info)
> return;
> WARN_ON(!rwsem_is_locked(&sb->s_umount));
> - wb_queue_work(&sb->s_bdi->wb, &work);
> + wb_queue_work(&bdi->wb, &work);
> wait_for_completion(&done);
> }
> EXPORT_SYMBOL(writeback_inodes_sb_nr);
> @@ -1594,13 +1595,14 @@ void sync_inodes_sb(struct super_block *sb)
> .reason = WB_REASON_SYNC,
> .for_sync = 1,
> };
> + struct backing_dev_info *bdi = sb->s_bdi;
>
> /* Nothing to do? */
> - if (sb->s_bdi == &noop_backing_dev_info)
> + if (!bdi_has_dirty_io(bdi) || bdi == &noop_backing_dev_info)
> return;
> WARN_ON(!rwsem_is_locked(&sb->s_umount));
>
> - wb_queue_work(&sb->s_bdi->wb, &work);
> + wb_queue_work(&bdi->wb, &work);
> wait_for_completion(&done);
>
> wait_sb_inodes(sb);
> --
> 2.4.0
>
--
Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
SUSE Labs, CR
WARNING: multiple messages have this Message-ID (diff)
From: Jan Kara <jack@suse.cz>
To: Tejun Heo <tj@kernel.org>
Cc: axboe@kernel.dk, 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
Subject: Re: [PATCH 34/51] writeback: don't issue wb_writeback_work if clean
Date: Tue, 30 Jun 2015 18:18:03 +0200 [thread overview]
Message-ID: <20150630161803.GS7252@quack.suse.cz> (raw)
In-Reply-To: <1432329245-5844-35-git-send-email-tj@kernel.org>
On Fri 22-05-15 17:13:48, Tejun Heo wrote:
> There are several places in fs/fs-writeback.c which queues
> wb_writeback_work without checking whether the target wb
> (bdi_writeback) has dirty inodes or not. The only thing
> wb_writeback_work does is writing back the dirty inodes for the target
> wb and queueing a work item for a clean wb is essentially noop. There
> are some side effects such as bandwidth stats being updated and
> triggering tracepoints but these don't affect the operation in any
> meaningful way.
>
> This patch makes all writeback_inodes_sb_nr() and sync_inodes_sb()
> skip wb_queue_work() if the target bdi is clean. Also, it moves
> dirtiness check from wakeup_flusher_threads() to
> __wb_start_writeback() so that all its callers benefit from the check.
>
> While the overhead incurred by scheduling a noop work isn't currently
> significant, the overhead may be higher with cgroup writeback support
> as we may end up issuing noop work items to a lot of clean wb's.
>
> Signed-off-by: Tejun Heo <tj@kernel.org>
> Cc: Jens Axboe <axboe@kernel.dk>
> Cc: Jan Kara <jack@suse.cz>
Looks good. You can add:
Reviewed-by: Jan Kara <jack@suse.com>
Honza
> ---
> fs/fs-writeback.c | 18 ++++++++++--------
> 1 file changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index c98d392..921a9e4 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -189,6 +189,9 @@ static void __wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
> {
> struct wb_writeback_work *work;
>
> + if (!wb_has_dirty_io(wb))
> + return;
> +
> /*
> * This is WB_SYNC_NONE writeback, so if allocation fails just
> * wakeup the thread for old dirty data writeback
> @@ -1215,11 +1218,8 @@ void wakeup_flusher_threads(long nr_pages, enum wb_reason reason)
> nr_pages = get_nr_dirty_pages();
>
> rcu_read_lock();
> - list_for_each_entry_rcu(bdi, &bdi_list, bdi_list) {
> - if (!bdi_has_dirty_io(bdi))
> - continue;
> + list_for_each_entry_rcu(bdi, &bdi_list, bdi_list)
> __wb_start_writeback(&bdi->wb, nr_pages, false, reason);
> - }
> rcu_read_unlock();
> }
>
> @@ -1512,11 +1512,12 @@ void writeback_inodes_sb_nr(struct super_block *sb,
> .nr_pages = nr,
> .reason = reason,
> };
> + struct backing_dev_info *bdi = sb->s_bdi;
>
> - if (sb->s_bdi == &noop_backing_dev_info)
> + if (!bdi_has_dirty_io(bdi) || bdi == &noop_backing_dev_info)
> return;
> WARN_ON(!rwsem_is_locked(&sb->s_umount));
> - wb_queue_work(&sb->s_bdi->wb, &work);
> + wb_queue_work(&bdi->wb, &work);
> wait_for_completion(&done);
> }
> EXPORT_SYMBOL(writeback_inodes_sb_nr);
> @@ -1594,13 +1595,14 @@ void sync_inodes_sb(struct super_block *sb)
> .reason = WB_REASON_SYNC,
> .for_sync = 1,
> };
> + struct backing_dev_info *bdi = sb->s_bdi;
>
> /* Nothing to do? */
> - if (sb->s_bdi == &noop_backing_dev_info)
> + if (!bdi_has_dirty_io(bdi) || bdi == &noop_backing_dev_info)
> return;
> WARN_ON(!rwsem_is_locked(&sb->s_umount));
>
> - wb_queue_work(&sb->s_bdi->wb, &work);
> + wb_queue_work(&bdi->wb, &work);
> wait_for_completion(&done);
>
> wait_sb_inodes(sb);
> --
> 2.4.0
>
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
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next prev parent reply other threads:[~2015-06-30 16:18 UTC|newest]
Thread overview: 296+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-22 21:13 [PATCHSET 1/3 v4 block/for-4.2/core] writeback: cgroup writeback support Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 01/51] page_writeback: revive cancel_dirty_page() in a restricted form Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 02/51] memcg: add per cgroup dirty page accounting Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 03/51] blkcg: move block/blk-cgroup.h to include/linux/blk-cgroup.h Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 04/51] update !CONFIG_BLK_CGROUP dummies in include/linux/blk-cgroup.h Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 05/51] blkcg: always create the blkcg_gq for the root blkcg Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 06/51] memcg: add mem_cgroup_root_css Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-17 14:56 ` Michal Hocko
2015-06-17 14:56 ` Michal Hocko
2015-06-17 18:25 ` Tejun Heo
2015-06-17 18:25 ` Tejun Heo
2015-06-17 18:25 ` Tejun Heo
2015-06-18 11:12 ` Michal Hocko
2015-06-18 11:12 ` Michal Hocko
2015-06-18 11:12 ` Michal Hocko
2015-06-18 17:49 ` Tejun Heo
2015-06-18 17:49 ` Tejun Heo
2015-06-19 9:18 ` Michal Hocko
2015-06-19 9:18 ` Michal Hocko
2015-06-19 9:18 ` Michal Hocko
2015-06-19 15:17 ` Tejun Heo
2015-06-19 15:17 ` Tejun Heo
2015-06-19 15:17 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 07/51] blkcg: add blkcg_root_css Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 08/51] cgroup, block: implement task_get_css() and use it in bio_associate_current() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 09/51] blkcg: implement task_get_blkcg_css() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 10/51] blkcg: implement bio_associate_blkcg() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 11/51] memcg: implement mem_cgroup_css_from_page() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 23:28 ` Johannes Weiner
2015-05-22 23:28 ` Johannes Weiner
2015-05-22 23:28 ` Johannes Weiner
2015-05-24 21:24 ` Tejun Heo
2015-05-24 21:24 ` Tejun Heo
2015-05-27 12:58 ` Johannes Weiner
2015-05-27 12:58 ` Johannes Weiner
2015-05-27 12:58 ` Johannes Weiner
2015-05-27 16:13 ` [PATCH v2 " Tejun Heo
2015-05-27 16:13 ` Tejun Heo
2015-05-27 16:13 ` Tejun Heo
2015-05-27 16:13 ` Tejun Heo
2015-05-27 17:09 ` Johannes Weiner
2015-05-27 17:09 ` Johannes Weiner
2015-05-27 17:48 ` Tejun Heo
2015-05-27 17:48 ` Tejun Heo
2015-05-27 17:48 ` Tejun Heo
2015-05-27 17:57 ` [PATCH v3 " Tejun Heo
2015-05-27 17:57 ` Tejun Heo
2015-05-27 17:57 ` Tejun Heo
2015-05-27 17:57 ` Tejun Heo
2015-05-28 0:00 ` [PATCH v4 " Tejun Heo
2015-05-28 0:00 ` Tejun Heo
2015-05-28 0:00 ` Tejun Heo
2015-05-28 0:00 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 12/51] writeback: move backing_dev_info->state into bdi_writeback Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 13/51] writeback: move backing_dev_info->bdi_stat[] " Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 14/51] writeback: move bandwidth related fields from backing_dev_info " Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 15/51] writeback: s/bdi/wb/ in mm/page-writeback.c Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 16/51] writeback: move backing_dev_info->wb_lock and ->worklist into bdi_writeback Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-07 0:49 ` Sasha Levin
2015-06-07 0:49 ` Sasha Levin
2015-06-08 5:57 ` [PATCH block/for-4.2-writeback] v9fs: fix error handling in v9fs_session_init() Tejun Heo
2015-06-08 5:57 ` Tejun Heo
2015-06-08 15:10 ` Jens Axboe
2015-06-08 15:10 ` Jens Axboe
2015-05-22 21:13 ` [PATCH 17/51] writeback: reorganize mm/backing-dev.c Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 18/51] writeback: separate out include/linux/backing-dev-defs.h Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 19/51] bdi: make inode_to_bdi() inline Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 6:47 ` Jan Kara
2015-06-30 6:47 ` Jan Kara
2015-05-22 21:13 ` [PATCH 20/51] writeback: add @gfp to wb_init() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 21/51] bdi: separate out congested state into a separate struct Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 9:21 ` Jan Kara
2015-06-30 9:21 ` Jan Kara
2015-05-22 21:13 ` [PATCH 22/51] writeback: add {CONFIG|BDI_CAP|FS}_CGROUP_WRITEBACK Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 9:37 ` Jan Kara
2015-06-30 9:37 ` Jan Kara
2015-07-02 1:10 ` Tejun Heo
2015-07-02 1:10 ` Tejun Heo
2015-07-03 10:49 ` Jan Kara
2015-07-03 10:49 ` Jan Kara
2015-07-03 17:14 ` Tejun Heo
2015-07-03 17:14 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 23/51] writeback: make backing_dev_info host cgroup-specific bdi_writebacks Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 10:14 ` Jan Kara
2015-06-30 10:14 ` Jan Kara
2015-05-22 21:13 ` [PATCH 24/51] writeback, blkcg: associate each blkcg_gq with the corresponding bdi_writeback_congested Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 9:08 ` Jan Kara
2015-06-30 9:08 ` Jan Kara
2015-06-30 9:08 ` Jan Kara
2015-05-22 21:13 ` [PATCH 25/51] writeback: attribute stats to the matching per-cgroup bdi_writeback Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 14:17 ` Jan Kara
2015-06-30 14:17 ` Jan Kara
2015-06-30 14:17 ` Jan Kara
2015-05-22 21:13 ` [PATCH 26/51] writeback: let balance_dirty_pages() work on the matching cgroup bdi_writeback Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 14:31 ` Jan Kara
2015-06-30 14:31 ` Jan Kara
2015-07-02 1:26 ` Tejun Heo
2015-07-02 1:26 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 27/51] writeback: make congestion functions per bdi_writeback Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 14:50 ` Jan Kara
2015-06-30 14:50 ` Jan Kara
2015-05-22 21:13 ` [PATCH 28/51] writeback, blkcg: restructure blk_{set|clear}_queue_congested() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 15:02 ` Jan Kara
2015-06-30 15:02 ` Jan Kara
2015-06-30 15:02 ` Jan Kara
2015-07-02 1:38 ` Tejun Heo
2015-07-02 1:38 ` Tejun Heo
2015-07-03 12:16 ` Jan Kara
2015-07-03 12:16 ` Jan Kara
2015-07-03 12:16 ` Jan Kara
2015-05-22 21:13 ` [PATCH 29/51] writeback, blkcg: propagate non-root blkcg congestion state Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 15:03 ` Jan Kara
2015-06-30 15:03 ` Jan Kara
2015-05-22 21:13 ` [PATCH 30/51] writeback: implement and use inode_congested() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 15:21 ` Jan Kara
2015-06-30 15:21 ` Jan Kara
2015-07-02 1:46 ` Tejun Heo
2015-07-02 1:46 ` Tejun Heo
2015-07-03 12:17 ` Jan Kara
2015-07-03 12:17 ` Jan Kara
2015-07-03 17:07 ` Tejun Heo
2015-07-03 17:07 ` Tejun Heo
2015-07-03 17:07 ` Tejun Heo
2015-07-04 15:12 ` [PATCH block/for-4.3] writeback: explain why @inode is allowed to be NULL for inode_congested() Tejun Heo
2015-07-04 15:12 ` Tejun Heo
2015-07-08 8:12 ` Jan Kara
2015-07-08 8:12 ` Jan Kara
2015-05-22 21:13 ` [PATCH 31/51] writeback: implement WB_has_dirty_io wb_state flag Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 15:42 ` Jan Kara
2015-06-30 15:42 ` Jan Kara
2015-05-22 21:13 ` [PATCH 32/51] writeback: implement backing_dev_info->tot_write_bandwidth Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 16:14 ` Jan Kara
2015-06-30 16:14 ` Jan Kara
2015-06-30 16:14 ` Jan Kara
2015-06-30 16:42 ` Jan Kara
2015-06-30 16:42 ` Jan Kara
2015-05-22 21:13 ` [PATCH 33/51] writeback: make bdi_has_dirty_io() take multiple bdi_writeback's into account Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 16:48 ` Jan Kara
2015-06-30 16:48 ` Jan Kara
2015-07-02 2:01 ` Tejun Heo
2015-07-02 2:01 ` Tejun Heo
2015-07-02 2:01 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 34/51] writeback: don't issue wb_writeback_work if clean Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-06-30 16:18 ` Jan Kara [this message]
2015-06-30 16:18 ` Jan Kara
2015-06-30 16:18 ` Jan Kara
2015-05-22 21:13 ` [PATCH 35/51] writeback: make bdi->min/max_ratio handling cgroup writeback aware Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 7:00 ` Jan Kara
2015-07-01 7:00 ` Jan Kara
2015-07-01 7:00 ` Jan Kara
2015-05-22 21:13 ` [PATCH 36/51] writeback: implement bdi_for_each_wb() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 7:27 ` Jan Kara
2015-07-01 7:27 ` Jan Kara
2015-07-01 7:27 ` Jan Kara
2015-07-02 2:22 ` Tejun Heo
2015-07-02 2:22 ` Tejun Heo
2015-07-03 12:26 ` Jan Kara
2015-07-03 12:26 ` Jan Kara
2015-07-03 12:26 ` Jan Kara
2015-07-03 17:06 ` Tejun Heo
2015-07-03 17:06 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 37/51] writeback: remove bdi_start_writeback() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 7:30 ` Jan Kara
2015-07-01 7:30 ` Jan Kara
2015-07-01 7:30 ` Jan Kara
2015-05-22 21:13 ` [PATCH 38/51] writeback: make laptop_mode_timer_fn() handle multiple bdi_writeback's Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 7:32 ` Jan Kara
2015-07-01 7:32 ` Jan Kara
2015-07-01 7:32 ` Jan Kara
2015-05-22 21:13 ` [PATCH 39/51] writeback: make writeback_in_progress() take bdi_writeback instead of backing_dev_info Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 7:47 ` Jan Kara
2015-07-01 7:47 ` Jan Kara
2015-07-01 7:47 ` Jan Kara
2015-07-02 2:28 ` Tejun Heo
2015-07-02 2:28 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 40/51] writeback: make bdi_start_background_writeback() " Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 7:50 ` Jan Kara
2015-07-01 7:50 ` Jan Kara
2015-07-02 2:29 ` Tejun Heo
2015-07-02 2:29 ` Tejun Heo
2015-07-06 19:36 ` [PATCH block/for-4.3] writeback: update writeback tracepoints to report cgroup Tejun Heo
2015-07-06 19:36 ` Tejun Heo
2015-07-06 19:36 ` Tejun Heo
2015-07-08 8:17 ` Jan Kara
2015-07-08 8:17 ` Jan Kara
2015-05-22 21:13 ` [PATCH 41/51] writeback: make wakeup_flusher_threads() handle multiple bdi_writeback's Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 8:15 ` Jan Kara
2015-07-01 8:15 ` Jan Kara
2015-07-02 2:37 ` Tejun Heo
2015-07-02 2:37 ` Tejun Heo
2015-07-03 13:02 ` Jan Kara
2015-07-03 13:02 ` Jan Kara
2015-07-03 16:33 ` Tejun Heo
2015-07-03 16:33 ` Tejun Heo
2015-07-03 16:33 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 42/51] writeback: make wakeup_dirtytime_writeback() " Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 8:20 ` Jan Kara
2015-07-01 8:20 ` Jan Kara
2015-05-22 21:13 ` [PATCH 43/51] writeback: add wb_writeback_work->auto_free Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 44/51] writeback: implement bdi_wait_for_completion() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 16:04 ` Jan Kara
2015-07-01 16:04 ` Jan Kara
2015-07-01 16:04 ` Jan Kara
2015-07-02 3:06 ` Tejun Heo
2015-07-02 3:06 ` Tejun Heo
2015-07-03 12:36 ` Jan Kara
2015-07-03 12:36 ` Jan Kara
2015-07-03 17:02 ` Tejun Heo
2015-07-03 17:02 ` Tejun Heo
2015-07-01 16:09 ` Jan Kara
2015-07-01 16:09 ` Jan Kara
2015-07-01 16:09 ` Jan Kara
2015-07-02 3:01 ` Tejun Heo
2015-07-02 3:01 ` Tejun Heo
2015-07-02 3:01 ` Tejun Heo
2015-05-22 21:13 ` [PATCH 45/51] writeback: implement wb_wait_for_single_work() Tejun Heo
2015-05-22 21:13 ` Tejun Heo
2015-07-01 19:07 ` Jan Kara
2015-07-01 19:07 ` Jan Kara
2015-07-02 3:07 ` Tejun Heo
2015-07-02 3:07 ` Tejun Heo
2015-07-03 22:12 ` [PATCH block/for-4.3] writeback: remove wb_writeback_work->single_wait/done Tejun Heo
2015-07-03 22:12 ` Tejun Heo
2015-07-08 8:24 ` Jan Kara
2015-07-08 8:24 ` Jan Kara
2015-05-22 21:14 ` [PATCH 46/51] writeback: restructure try_writeback_inodes_sb[_nr]() Tejun Heo
2015-05-22 21:14 ` Tejun Heo
2015-05-22 21:14 ` [PATCH 47/51] writeback: make writeback initiation functions handle multiple bdi_writeback's Tejun Heo
2015-05-22 21:14 ` Tejun Heo
2015-05-22 21:14 ` [PATCH 48/51] writeback: dirty inodes against their matching cgroup bdi_writeback's Tejun Heo
2015-05-22 21:14 ` Tejun Heo
2015-07-01 19:16 ` Jan Kara
2015-07-01 19:16 ` Jan Kara
2015-07-01 19:16 ` Jan Kara
2015-05-22 21:14 ` [PATCH 49/51] buffer, writeback: make __block_write_full_page() honor cgroup writeback Tejun Heo
2015-05-22 21:14 ` Tejun Heo
2015-07-01 19:21 ` Jan Kara
2015-07-01 19:21 ` Jan Kara
2015-07-01 19:28 ` Jan Kara
2015-07-01 19:28 ` Jan Kara
2015-07-01 19:28 ` Jan Kara
2015-05-22 21:14 ` [PATCH 50/51] mpage: make __mpage_writepage() " Tejun Heo
2015-05-22 21:14 ` Tejun Heo
2015-07-01 19:26 ` Jan Kara
2015-07-01 19:26 ` Jan Kara
2015-05-22 21:14 ` [PATCH 51/51] ext2: enable cgroup writeback support Tejun Heo
2015-05-22 21:14 ` Tejun Heo
2015-07-01 19:29 ` Jan Kara
2015-07-01 19:29 ` Jan Kara
2015-07-02 3:08 ` Tejun Heo
2015-07-02 3:08 ` Tejun Heo
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