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From: Badari Pulavarty <pbadari@us.ibm.com>
Message-Id: <200202112137.g1BLb3I19212@eng2.beaverton.ibm.com>
Subject: Re: patch: aio + bio for raw io
To: bcrl@redhat.com (Benjamin LaHaise)
Date: Mon, 11 Feb 2002 13:37:03 -0800 (PST)
Cc: linux-aio@kvack.org, linux-kernel@vger.kernel.org
In-Reply-To: <20020208025313.A11893@redhat.com> from "Benjamin LaHaise" at Feb 08, 2002 01:53:13 AM PST
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> 
> Quick message: this patch makes aio use bio directly for brw_kvec_async.  
> This is against yesterday's patchset.  Comments?
> 
Hi Ben,

I have one more question on your latest aio patch.

raw_kvec_rw() seem to handle max upto 512K (max_sectors = 2500). 
But I don't see any where you loop thro to satisfy the entire 
IO request.

Infact, generic_aio_read() is mapping the user buffer for the iosize 
and calling file->f_op->kvec_read(file, cb, iosize, pos). 
How does the io > 512K gets handled ?

NOTE: I have not looked at the userlevel code. Is IO split at max 512K
      at userlevel ?

Thanks,
Badari
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