From: Christoph Hellwig <hch@lst.de>
To: Ming Lei <tom.leiming@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block <linux-block@vger.kernel.org>,
"open list:DEVICE-MAPPER (LVM)" <dm-devel@redhat.com>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 01/10] pktcdvd: remove the call to blk_queue_bounce
Date: Mon, 19 Jun 2017 17:00:22 +0200 [thread overview]
Message-ID: <20170619150022.GA10165@lst.de> (raw)
In-Reply-To: <CACVXFVMxgKk1kzL=rgAzdw8X5qgWn8Z_Hv-gUHSKfp1rXRArxA@mail.gmail.com>
On Mon, Jun 19, 2017 at 10:34:36PM +0800, Ming Lei wrote:
> blk_queue_make_request() sets bounce for any highmem page for long time,
> and in theory this patch might cause regression on 32bit arch, when
> the controller can't handle higmem page really(especially in case of PAE), so
> we may need to be careful about this change, especially on some old hardware.
Which controller?
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Ming Lei <tom.leiming@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
linux-block <linux-block@vger.kernel.org>,
"open list:DEVICE-MAPPER (LVM)" <dm-devel@redhat.com>
Subject: Re: [PATCH 01/10] pktcdvd: remove the call to blk_queue_bounce
Date: Mon, 19 Jun 2017 17:00:22 +0200 [thread overview]
Message-ID: <20170619150022.GA10165@lst.de> (raw)
In-Reply-To: <CACVXFVMxgKk1kzL=rgAzdw8X5qgWn8Z_Hv-gUHSKfp1rXRArxA@mail.gmail.com>
On Mon, Jun 19, 2017 at 10:34:36PM +0800, Ming Lei wrote:
> blk_queue_make_request() sets bounce for any highmem page for long time,
> and in theory this patch might cause regression on 32bit arch, when
> the controller can't handle higmem page really(especially in case of PAE), so
> we may need to be careful about this change, especially on some old hardware.
Which controller?
next prev parent reply other threads:[~2017-06-19 15:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-19 7:26 move bounce limits settings into the drivers Christoph Hellwig
2017-06-19 7:26 ` [PATCH 01/10] pktcdvd: remove the call to blk_queue_bounce Christoph Hellwig
2017-06-19 14:34 ` Ming Lei
2017-06-19 15:00 ` Christoph Hellwig [this message]
2017-06-19 15:00 ` Christoph Hellwig
2017-06-19 15:13 ` Ming Lei
2017-06-19 15:18 ` Christoph Hellwig
2017-06-19 15:18 ` Christoph Hellwig
2017-06-19 15:29 ` Ming Lei
2017-06-19 7:26 ` [PATCH 02/10] blk-map: call blk_queue_bounce from blk_rq_append_bio Christoph Hellwig
2017-06-19 7:26 ` [PATCH 03/10] block: move bounce declarations to block/blk.h Christoph Hellwig
2017-06-19 7:26 ` [PATCH 04/10] block: remove the queue_bounce_pfn helper Christoph Hellwig
2017-06-19 7:26 ` [PATCH 05/10] block: don't bother with bounce limits for make_request drivers Christoph Hellwig
2017-06-19 7:26 ` [PATCH 06/10] blk-mq: don't bounce by default Christoph Hellwig
2017-06-19 7:26 ` [PATCH 07/10] block: don't set bounce limit in blk_init_allocated_queue Christoph Hellwig
2017-06-19 7:26 ` [PATCH 08/10] block: don't set bounce limit in blk_init_queue Christoph Hellwig
2017-06-19 7:26 ` [PATCH 09/10] dm: don't set bounce limit Christoph Hellwig
2017-06-19 7:26 ` [PATCH 10/10] mmc/block: remove a call to blk_queue_bounce_limit Christoph Hellwig
2017-06-26 10:00 ` move bounce limits settings into the drivers Christoph Hellwig
2017-06-27 18:10 ` Jens Axboe
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