From: Jens Axboe <axboe@kernel.dk>
To: Christoph Hellwig <hch@infradead.org>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, hannes@cmpxchg.org, clm@fb.com, jack@suse.cz
Subject: Re: [PATCH 4/7] page-writeback: pass in '0' for nr_pages writeback in laptop mode
Date: Mon, 25 Sep 2017 08:57:52 -0600 [thread overview]
Message-ID: <d0120f9e-9b52-9e42-7f1d-57e00ee12c3a@kernel.dk> (raw)
In-Reply-To: <20170921145929.GD8839@infradead.org>
On 09/21/2017 08:59 AM, Christoph Hellwig wrote:
> On Wed, Sep 20, 2017 at 09:32:59AM -0600, Jens Axboe wrote:
>> Laptop mode really wants to writeback the number of dirty
>> pages and inodes. Instead of calculating this in the caller,
>> just pass in 0 and let wakeup_flusher_threads() handle it.
>>
>> Use the new wakeup_flusher_threads_bdi() instead of rolling
>> our own. This changes the writeback to not be range cyclic,
>> but that should not matter for laptop mode flush-all
>> semantics.
>
> Looks good,
>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
>
> While we're at sorting out the laptop_mode_wb_timer mess:
> can we move initializing and deleting it from the block code
> to the backing-dev code given that it now doesn't assume anything
> about block devices any more?
Good point, I'll include that in a followup for 4.15.
--
Jens Axboe
next prev parent reply other threads:[~2017-09-25 14:57 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-20 15:32 [PATCH 0/7 v2] More graceful flusher thread memory reclaim wakeup Jens Axboe
2017-09-20 15:32 ` [PATCH 1/7] buffer: cleanup free_more_memory() flusher wakeup Jens Axboe
2017-09-21 14:55 ` Christoph Hellwig
2017-09-20 15:32 ` [PATCH 2/7] fs: kill 'nr_pages' argument from wakeup_flusher_threads() Jens Axboe
2017-09-21 14:55 ` Christoph Hellwig
2017-09-22 13:12 ` Jan Kara
2017-09-20 15:32 ` [PATCH 3/7] fs-writeback: provide a wakeup_flusher_threads_bdi() Jens Axboe
2017-09-21 14:56 ` Christoph Hellwig
2017-09-20 15:32 ` [PATCH 4/7] page-writeback: pass in '0' for nr_pages writeback in laptop mode Jens Axboe
2017-09-21 14:59 ` Christoph Hellwig
2017-09-25 14:57 ` Jens Axboe [this message]
2017-09-21 15:00 ` Christoph Hellwig
2017-09-22 13:14 ` Jan Kara
2017-09-20 15:33 ` [PATCH 5/7] fs-writeback: make wb_start_writeback() static Jens Axboe
2017-09-21 15:01 ` Christoph Hellwig
2017-09-20 15:33 ` [PATCH 6/7] fs-writeback: move nr_pages == 0 logic to one location Jens Axboe
2017-09-21 15:02 ` Christoph Hellwig
2017-09-22 13:17 ` Jan Kara
2017-09-20 15:33 ` [PATCH 7/7] fs-writeback: only allow one inflight and pending full flush Jens Axboe
2017-09-21 15:05 ` Christoph Hellwig
2017-09-21 15:36 ` Jens Axboe
2017-09-21 16:00 ` Jens Axboe
2017-09-21 17:33 ` Christoph Hellwig
2017-09-25 9:35 ` Jan Kara
2017-09-25 14:48 ` Jens Axboe
2017-09-28 18:09 ` Jens Axboe
2017-09-29 23:20 ` Jens Axboe
2017-10-02 14:53 ` Jan Kara
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