From: Jens Axboe <axboe@suse.de>
To: Benjamin LaHaise <bcrl@redhat.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>,
linux-aio@kvack.org, linux-kernel@vger.kernel.org,
axboe@suse.com
Subject: Re: patch: aio + bio for raw io
Date: Mon, 11 Feb 2002 12:09:23 +0100 [thread overview]
Message-ID: <20020211120923.D1014@suse.de> (raw)
In-Reply-To: <20020208025313.A11893@redhat.com> <200202082107.g18L7wx26206@eng2.beaverton.ibm.com> <20020208171327.B12788@redhat.com>
In-Reply-To: <20020208171327.B12788@redhat.com>
On Fri, Feb 08 2002, Benjamin LaHaise wrote:
> > And also, currently BIO_MAX_SIZE is only 64K. Infact, if I try to issue
> > 64K IO using submit_bio(), I get following BUG() on my QLOGIC controller.
>
> Jens? Also, why does the bio callback return a value? Nothing could ever
> possibly use it as far as I can see.
WRT max size, Linus already replied why this is so. The other thing --
the callback return value was really to have it return 'done or not'
when doing partial completions. It was later decided that the end_io
callback should only be called for final completion, so really the
nr_sectors and return value is not used now. I'll clean that up next
time around.
--
Jens Axboe
next prev parent reply other threads:[~2002-02-11 11:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-08 7:53 patch: aio + bio for raw io Benjamin LaHaise
2002-02-08 9:40 ` Suparna Bhattacharya
2002-02-08 22:02 ` Benjamin LaHaise
2002-02-11 18:11 ` Suparna Bhattacharya
2002-02-08 21:07 ` Badari Pulavarty
2002-02-08 21:18 ` arjan
2002-02-08 22:13 ` Benjamin LaHaise
2002-02-08 22:54 ` Linus Torvalds
[not found] ` <200202082254.g18Mspq08299@penguin.transmeta.com>
2002-02-09 0:01 ` Benjamin LaHaise
2002-02-09 0:25 ` Linus Torvalds
2002-02-14 4:46 ` Suparna Bhattacharya
2002-02-11 11:09 ` Jens Axboe [this message]
2002-02-11 21:37 ` Badari Pulavarty
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