From: Jens Axboe <jens.axboe@oracle.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: James.Bottomley@HansenPartnership.com, linux-scsi@vger.kernel.org
Subject: Re: [PATCH] [14/20] Don't disable direct_io for unchecked_isa_dma in st.c
Date: Fri, 14 Mar 2008 14:51:35 +0100 [thread overview]
Message-ID: <20080314135135.GT17940@kernel.dk> (raw)
In-Reply-To: <20080307175414.08C981B41AE@basil.firstfloor.org>
On Fri, Mar 07 2008, Andi Kleen wrote:
>
> Block layer bounces anyways.
Are you sure? Seems to me that st builds its own list with
get_user_pages() for direct io, where will that get bounced? The block
layer will only bounce things that are mapped directly, so if st used
blk_rq_map_kern() and inserted that request in the queue, we could
proceed with killing that check in st.
--
Jens Axboe
next prev parent reply other threads:[~2008-03-14 13:51 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-07 17:53 [PATCH] [0/20] Remove isa_unchecked_dma and some more GFP_DMAs in the mid layer v3 Andi Kleen
2008-03-07 17:54 ` [PATCH] [1/20] Add sense_buffer_isa to host template Andi Kleen
2008-03-07 17:54 ` [PATCH] [2/20] Remove unchecked_isa in BusLogic Andi Kleen
2008-03-07 17:54 ` [PATCH] [3/20] Remove unchecked_isa_dma in advansys.c Andi Kleen
2008-03-07 17:54 ` [PATCH] [4/20] Remove unchecked_isa_dma in gdth Andi Kleen
2008-03-07 17:54 ` [PATCH] [5/20] Remove unchecked_isa_dma in eata.c Andi Kleen
2008-03-07 17:54 ` [PATCH] [6/20] Remove unchecked_isa_dma in aha1542 Andi Kleen
2008-03-07 17:54 ` [PATCH] [7/20] Remove unchecked_isa_dma in aha152x/wd7000/sym53c416/u14-34f/NCR53c406a Andi Kleen
2008-03-07 17:54 ` [PATCH] [8/20] Remove random noop unchecked_isa_dma users Andi Kleen
2008-03-07 17:54 ` [PATCH] [9/20] Add blk_kmalloc/blk_alloc_pages Andi Kleen
2008-03-13 22:06 ` James Bottomley
2008-03-14 13:48 ` Jens Axboe
2008-03-14 13:59 ` Andi Kleen
2008-03-17 8:27 ` Jens Axboe
2008-03-17 8:36 ` Andi Kleen
2008-03-17 8:38 ` Jens Axboe
2008-03-17 8:53 ` Andi Kleen
2008-03-17 9:18 ` Boaz Harrosh
2008-03-17 10:03 ` Andi Kleen
2008-03-17 20:29 ` Jens Axboe
2008-03-17 20:45 ` Andi Kleen
2008-03-17 20:46 ` Jens Axboe
2008-03-17 21:34 ` Andi Kleen
2008-03-18 7:26 ` Jens Axboe
2008-04-02 3:37 ` FUJITA Tomonori
2008-04-02 8:43 ` Boaz Harrosh
2008-04-02 11:08 ` FUJITA Tomonori
2008-04-02 11:32 ` Boaz Harrosh
2008-03-17 13:59 ` James Bottomley
2008-03-07 17:54 ` [PATCH] [11/20] Remove unchecked_isa_dma support for hostdata Andi Kleen
2008-03-07 17:54 ` [PATCH] [12/20] Remove unchecked_isa_dma checks in sg.c Andi Kleen
2008-03-07 17:54 ` [PATCH] [13/20] Use blk_kmalloc in scsi_scan Andi Kleen
2008-03-07 17:54 ` [PATCH] [14/20] Don't disable direct_io for unchecked_isa_dma in st.c Andi Kleen
2008-03-14 13:51 ` Jens Axboe [this message]
2008-03-14 14:24 ` Christoph Hellwig
2008-03-16 12:39 ` Boaz Harrosh
2008-03-16 12:44 ` Andi Kleen
2008-03-17 8:28 ` Jens Axboe
2008-03-27 17:26 ` Mike Christie
2008-03-17 8:27 ` Jens Axboe
2008-03-17 10:55 ` FUJITA Tomonori
2008-03-17 12:21 ` Boaz Harrosh
2008-03-07 17:54 ` [PATCH] [15/20] Remove automatic block layer bouncing for unchecked_isa_dma Andi Kleen
2008-03-07 17:54 ` [PATCH] [16/20] Convert sr driver over the blk_kmalloc Andi Kleen
2008-03-07 17:54 ` [PATCH] [17/20] Remove unchecked_isa_dma from sysfs Andi Kleen
2008-03-07 17:54 ` [PATCH] [18/20] Switch to a single SCSI command pool Andi Kleen
2008-03-07 17:54 ` [PATCH] [19/20] Finally kill unchecked_isa_dma Andi Kleen
2008-03-07 17:54 ` [PATCH] [20/20] Convert DMA buffers in ch.c to allocate via the block layer Andi Kleen
2008-03-11 17:55 ` [PATCH] [0/20] Remove isa_unchecked_dma and some more GFP_DMAs in the mid layer v3 Boaz Harrosh
2008-03-12 0:56 ` Andi Kleen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20080314135135.GT17940@kernel.dk \
--to=jens.axboe@oracle.com \
--cc=James.Bottomley@HansenPartnership.com \
--cc=andi@firstfloor.org \
--cc=linux-scsi@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.