From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
Satyam Sharma <satyam.sharma@gmail.com>,
Nate Diller <nate.diller@gmail.com>
Subject: Re: Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user
Date: Wed, 16 May 2007 16:19:49 +1000 [thread overview]
Message-ID: <464AA285.4010309@yahoo.com.au> (raw)
In-Reply-To: <Pine.LNX.4.64.0705152309180.5772@schroedinger.engr.sgi.com>
Christoph Lameter wrote:
> On Wed, 16 May 2007, Nick Piggin wrote:
>
>
>>Well sure, if that's all Christoph is worried about, then it isn't
>>really valid because in generic code we have to follow the architecture
>>abstraction API -- there is no "non highmem platform" in generic code :)
>
>
> But there is a default KM_USER0 that is used in many functions.
>
> F.e.
>
> filemap_copy_from_user *_iovec xip_truncate_page clear_user_highpage
> clear_highpage copy_user_highpage copy_highpage
>
> So explicitly mentioning KM_USER0 in every function call is not a
> requirement.
You probably have an argument there... but that's not to do with
highmem platforms or not.
--
SUSE Labs, Novell Inc.
next prev parent reply other threads:[~2007-05-16 6:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-16 3:00 Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user Christoph Lameter
2007-05-16 3:24 ` Andrew Morton
2007-05-16 4:05 ` Christoph Lameter
2007-05-16 4:52 ` Nick Piggin
2007-05-16 5:29 ` Andrew Morton
2007-05-16 5:51 ` Nick Piggin
2007-05-16 6:13 ` Christoph Lameter
2007-05-16 6:19 ` Nick Piggin [this message]
2007-05-16 17:39 ` Satyam Sharma
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