From: Brian King <brking@us.ibm.com>
To: Tejun Heo <htejun@gmail.com>
Cc: jgarzik@pobox.com, linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: Re: [patch 08/15] libata: Add ability to prevent PRD from being allocated
Date: Wed, 08 Feb 2006 08:28:41 -0600 [thread overview]
Message-ID: <43EA0019.9020806@us.ibm.com> (raw)
In-Reply-To: <43E9D236.2080207@gmail.com>
Tejun Heo wrote:
> Hello, Brian.
>
> brking@us.ibm.com wrote:
>> For some HBAs, particularly SAS HBAs, there is no reason to
>> allocate a PRD buffer, since it is not used. Add a flag
>> to prevent its allocation.
>>
>
> I think it's better done with ata_sas_port_start/stop rather than with
> ATA_FLAG_NO_PRD. All sata low level drivers which don't use PRD table
> implement their own port_start/stop (ahci.c, sata_sil24.c for example).
Sounds good to me. I'll go ahead and drop this patch and add
ata_sas_port_start/stop.
--
Brian King
eServer Storage I/O
IBM Linux Technology Center
next prev parent reply other threads:[~2006-02-08 14:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-06 15:42 [patch 08/15] libata: Add ability to prevent PRD from being allocated brking
2006-02-08 11:12 ` Tejun Heo
2006-02-08 14:28 ` Brian King [this message]
2006-02-09 9:22 ` Jeff Garzik
2006-02-09 7:20 ` Jeff Garzik
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=43EA0019.9020806@us.ibm.com \
--to=brking@us.ibm.com \
--cc=htejun@gmail.com \
--cc=jgarzik@pobox.com \
--cc=linux-ide@vger.kernel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).