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
WARNING: multiple messages have this Message-ID (diff)
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
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"aart@kvack.org"> aart@kvack.org </a>
next prev parent reply other threads:[~2005-06-26 8:41 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-23 7:05 [patch][rfc] 0/5: remove PageReserved Nick Piggin
2005-06-23 7:05 ` Nick Piggin
2005-06-23 7:06 ` [patch][rfc] 1/5: comment for mm/rmap.c Nick Piggin
2005-06-23 7:06 ` [patch][rfc] 2/5: micro optimisation " Nick Piggin
2005-06-23 7:07 ` [patch][rfc] 3/5: remove atomic bitop when freeing page Nick Piggin
2005-06-23 7:07 ` [patch][rfc] 4/5: remap ZERO_PAGE mappings Nick Piggin
2005-06-23 7:08 ` [patch][rfc] 5/5: core remove PageReserved Nick Piggin
2005-06-23 9:51 ` William Lee Irwin III
2005-06-23 9:51 ` William Lee Irwin III
2005-06-23 10:32 ` Nick Piggin
2005-06-23 10:32 ` Nick Piggin
2005-06-23 22:08 ` William Lee Irwin III
2005-06-23 22:08 ` William Lee Irwin III
2005-06-23 23:21 ` Nick Piggin
2005-06-23 23:21 ` Nick Piggin
2005-06-24 0:59 ` William Lee Irwin III
2005-06-24 0:59 ` William Lee Irwin III
2005-06-24 1:17 ` Nick Piggin
2005-06-24 1:17 ` Nick Piggin
2005-06-24 1:47 ` Nick Piggin
2005-06-24 1:47 ` Nick Piggin
2005-06-24 1:25 ` Nick Piggin
2005-06-24 1:25 ` Nick Piggin
2005-06-24 4:50 ` Andrew Morton
2005-06-24 4:50 ` Andrew Morton
2005-06-24 8:24 ` William Lee Irwin III
2005-06-24 8:24 ` William Lee Irwin III
2005-06-26 8:41 ` Nick Piggin [this message]
2005-06-26 8:41 ` Nick Piggin
2005-06-23 7:26 ` [patch][rfc] 2/5: micro optimisation for mm/rmap.c William Lee Irwin III
2005-06-23 7:26 ` William Lee Irwin III
2005-06-23 7:33 ` Nick Piggin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=42BE6A3E.8030703@yahoo.com.au \
--to=nickpiggin@yahoo.com.au \
--cc=akpm@osdl.org \
--cc=hugh@veritas.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-scsi@vger.kernel.org \
--cc=pbadari@us.ibm.com \
--cc=wli@holomorphy.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.