From: Mike Christie <michaelc@cs.wisc.edu>
To: Jens Axboe <axboe@suse.de>
Cc: James Bottomley <James.Bottomley@SteelEye.com>,
Christoph Hellwig <hch@infradead.org>,
device-mapper development <dm-devel@redhat.com>,
linux-scsi <linux-scsi@vger.kernel.org>
Subject: Re: [PATCH RFC 0/4] use scatter lists for all block pc requests and simplify hw handlers
Date: Wed, 08 Jun 2005 07:46:50 -0500 [thread overview]
Message-ID: <42A6E8BA.4090603@cs.wisc.edu> (raw)
In-Reply-To: <20050607180942.GC8172@suse.de>
Jens Axboe wrote:
> On Tue, Jun 07 2005, Michael Christie wrote:
>
>>Quoting James Bottomley <James.Bottomley@SteelEye.com>:
>>
>>
>>>On Tue, 2005-06-07 at 13:10 +0100, Christoph Hellwig wrote:
>>>
>>>>shouldn't blk_rq_map_kern handle a 0 buffer and do nothing more than
>>>>blk_get_request? It's not exactly a criticial fastpath and that would make
>>>
>>>life
>>>
>>>>easier for the callers.
>>>
>>>Yes ... and it should probably do bio bouncing as well, since there's
>>>nothing special we have to do on completion to clean it up.
>>
>>ok. I just made it like the existing blk_rq_map_user which made the caller do
>>those things.
>
>
> I agree with Christoph, makes it nicer for blk_rq_map_user as well. I'll
> change the latter if you fix the former.
ok will do.
next prev parent reply other threads:[~2005-06-08 18:48 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-04 1:19 [PATCH RFC 0/4] use scatter lists for all block pc requests and simplify hw handlers Mike Christie
2005-06-04 16:07 ` James Bottomley
2005-06-05 7:15 ` Mike Christie
2005-06-05 9:41 ` [dm-devel] " christophe varoqui
2005-06-06 13:31 ` Lars Marowsky-Bree
2005-06-07 0:04 ` Michael Christie
2005-06-07 7:01 ` [dm-devel] " Lars Marowsky-Bree
2005-06-05 14:40 ` James Bottomley
2005-06-05 19:11 ` James Bottomley
2005-06-06 5:43 ` Douglas Gilbert
2005-06-06 14:19 ` James Bottomley
2005-06-07 13:08 ` Douglas Gilbert
2005-06-07 13:34 ` Tony Battersby
2005-06-07 16:34 ` James Bottomley
2005-06-07 18:38 ` [PATCH RFC 0/4] use scatter lists for all blockpc " Tony Battersby
2005-06-07 18:43 ` Jens Axboe
2005-06-07 15:59 ` [PATCH RFC 0/4] use scatter lists for all block pc " James Bottomley
2005-06-07 18:07 ` Jens Axboe
2005-06-07 19:26 ` James Bottomley
2005-06-08 7:09 ` Jens Axboe
2005-06-06 19:02 ` Patrick Mansfield
2005-06-07 15:26 ` Michael Christie
2005-06-07 18:23 ` Patrick Mansfield
2005-06-08 15:41 ` Mike Christie
2005-06-09 0:08 ` Patrick Mansfield
2005-06-09 6:18 ` Jens Axboe
2005-06-09 11:51 ` James Bottomley
2005-06-09 11:54 ` Jens Axboe
2005-06-07 12:10 ` Christoph Hellwig
2005-06-07 12:20 ` James Bottomley
2005-06-07 15:36 ` Michael Christie
2005-06-07 15:45 ` [dm-devel] " Michael Christie
2005-06-07 16:26 ` Kai Makisara
2005-06-07 19:23 ` James Bottomley
2005-06-07 18:09 ` Jens Axboe
2005-06-08 12:46 ` Mike Christie [this message]
2005-06-07 18:07 ` Jens Axboe
2005-06-07 19:38 ` James Bottomley
2005-06-08 3:00 ` Douglas Gilbert
2005-06-08 12:59 ` James Bottomley
2005-06-08 14:50 ` Luben Tuikov
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