From: Christoph Hellwig <hch@lst.de>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
Jaegeuk Kim <jaegeuk@kernel.org>, Ming Lei <ming.lei@redhat.com>,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
Martijn Coenen <maco@android.com>
Subject: Re: [PATCH v2 2/3] loop: Select I/O scheduler 'none' from inside add_disk()
Date: Wed, 4 Aug 2021 07:35:27 +0200 [thread overview]
Message-ID: <20210804053527.GA5711@lst.de> (raw)
In-Reply-To: <20210803182304.365053-3-bvanassche@acm.org>
On Tue, Aug 03, 2021 at 11:23:03AM -0700, Bart Van Assche wrote:
> We noticed that the user interface of Android devices becomes very slow
> under memory pressure. This is because Android uses the zram driver on top
> of the loop driver for swapping,
Sorry, but that is just amazingly stupid. If you really want to swap
to compressed files introduce that support in the swap code instead of
coming up with dumb driver stacks from hell.
next prev parent reply other threads:[~2021-08-04 5:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-03 18:23 [PATCH v2 0/3] Improve loop driver I/O scheduler and QD selection Bart Van Assche
2021-08-03 18:23 ` [PATCH v2 1/3] blk-mq: Introduce the BLK_MQ_F_NO_SCHED_BY_DEFAULT flag Bart Van Assche
2021-08-03 18:23 ` [PATCH v2 2/3] loop: Select I/O scheduler 'none' from inside add_disk() Bart Van Assche
2021-08-04 2:39 ` Ming Lei
2021-08-04 17:43 ` Bart Van Assche
2021-08-05 3:26 ` Ming Lei
2021-08-05 16:49 ` Bart Van Assche
2021-08-04 17:58 ` Jens Axboe
2021-08-04 5:35 ` Christoph Hellwig [this message]
2021-08-04 17:58 ` Bart Van Assche
2021-08-04 18:04 ` Jens Axboe
2021-08-05 6:39 ` Christoph Hellwig
2021-08-03 18:23 ` [PATCH v2 3/3] loop: Add the default_queue_depth kernel module parameter Bart Van Assche
2021-08-04 6:07 ` Greg KH
2021-08-04 17:38 ` Bart Van Assche
2021-08-04 19:33 ` Greg KH
2021-08-05 6:14 ` Chaitanya Kulkarni
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