From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Morton <akpm@digeo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: must-fix, version 6
Date: Fri, 30 May 2003 20:28:18 -0700 [thread overview]
Message-ID: <20030531032818.GH8978@holomorphy.com> (raw)
In-Reply-To: <20030530163720.399a8bac.akpm@digeo.com>
On Fri, May 30, 2003 at 04:37:20PM -0700, Andrew Morton wrote:
> o GFP_DMA32 (or something like that). Lots of ideas. jejb, zaitcev,
> willy, arjan, wli.
Specifically, 64-bit systems need to be able to enforce 32-bit
addressing limits for device metadata like network cards' ring buffers
and SCSI command descriptors.
This is very distinct from 32-bit lowmem exhaustion issues; on 32-bit
the command descriptors and ring buffers are O(devices) and hence not
a lowmem pressure issue (well, the O(devices) bit could be but we might
as well say we don't support it and no one has asked for it to be
handled). Actual data having io done to it is unrelated to this.
-- wli
next prev parent reply other threads:[~2003-05-31 3:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-30 23:37 must-fix, version 6 Andrew Morton
2003-05-30 23:38 ` Andrew Morton
2003-05-30 23:39 ` Andrew Morton
2003-05-31 3:28 ` William Lee Irwin III [this message]
2003-05-31 9:47 ` Christoph Hellwig
2003-05-31 11:28 ` Ingo Oeser
2003-06-01 0:10 ` Daniel Phillips
[not found] <20030530235008$3775@gated-at.bofh.it>
[not found] ` <20030531095009$09a0@gated-at.bofh.it>
2003-05-31 15:26 ` Arnd Bergmann
2003-05-31 19:31 ` Christoph Hellwig
2003-05-31 22:49 ` Arnd Bergmann
-- strict thread matches above, loose matches on Subject: below --
2003-05-31 19:36 Eric Benson
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