From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Andrew Morton <akpm@osdl.org>
Cc: William Lee Irwin III <wli@holomorphy.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
hugh@veritas.com, pbadari@us.ibm.com, linux-scsi@vger.kernel.org
Subject: Re: [patch][rfc] 5/5: core remove PageReserved
Date: Sun, 26 Jun 2005 18:41:34 +1000 [thread overview]
Message-ID: <42BE6A3E.8030703@yahoo.com.au> (raw)
In-Reply-To: <20050623215011.0b1e6ef2.akpm@osdl.org>
Andrew Morton wrote:
> William Lee Irwin III <wli@holomorphy.com> wrote:
>> Mutatis mutandis for my SCSI tape drive.
>
>
OK, for the VM_RESERVED case, it looks like it won't be much of a problem
because get_user_pages faults on VM_IO regions (which is already set in
remap_pfn_range which is used by mem.c and most drivers). So this code will
simply not encounter VM_RESERVED regions - well obviously, get_user_pages
should be made to explicitly check for VM_RESERVED too, but the point being
that introducing such a check will not overly restrict drivers.
[snip SetPageDirty is wrong]
Not that this helps the existing bug...
--
SUSE Labs, Novell Inc.
Send instant messages to your online friends http://au.messenger.yahoo.com
prev parent reply other threads:[~2005-06-26 8:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <42BA5F37.6070405@yahoo.com.au>
[not found] ` <42BA5F5C.3080101@yahoo.com.au>
[not found] ` <42BA5F7B.30904@yahoo.com.au>
[not found] ` <42BA5FA8.7080905@yahoo.com.au>
[not found] ` <42BA5FC8.9020501@yahoo.com.au>
[not found] ` <42BA5FE8.2060207@yahoo.com.au>
[not found] ` <20050623095153.GB3334@holomorphy.com>
2005-06-24 4:50 ` [patch][rfc] 5/5: core remove PageReserved Andrew Morton
2005-06-24 8:24 ` William Lee Irwin III
2005-06-26 8:41 ` Nick Piggin [this message]
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