From: Linus Torvalds <torvalds@linux-foundation.org>
To: Nick Piggin <npiggin@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>,
linux-arch@vger.kernel.org,
Linux Memory Management List <linux-mm@kvack.org>,
Paul McKenney <paulmck@us.ibm.com>
Subject: Re: [patch 2/2] fix SMP data race in pagetable setup vs walking
Date: Tue, 13 May 2008 08:45:51 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.1.10.0805130844000.3019@woody.linux-foundation.org> (raw)
In-Reply-To: <20080513080143.GB19870@wotan.suse.de>
On Tue, 13 May 2008, Nick Piggin wrote:
>
> No, *everyone* (except arch-only non-alpha developer) needs to know about
> it.
Umm. In architecture files, by definition, only alpha needs to know about
it.
That was very much an architecture-specific file: we're talking about
asm-x86/pgtable_32.h here.
> x86 especially is a reference and often is a proving ground for code that
> becomes generic, so I'd say even x86 developers should need to know about
> it too.
And in reference files that are architecture-specific, there is absolutely
*no point* in ever having read_barrier_depends(). Because even if another
architecture copies it, it's better off without it.
Linus
--
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:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2008-05-13 15:45 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-05 11:20 [patch 1/2] read_barrier_depends fixlets Nick Piggin
2008-05-05 12:12 ` [patch 2/2] fix SMP data race in pagetable setup vs walking Nick Piggin
2008-05-05 14:35 ` Paul E. McKenney
2008-05-06 9:38 ` Nick Piggin
2008-05-06 13:32 ` Paul E. McKenney
2008-05-13 7:55 ` Nick Piggin
2008-05-13 13:26 ` Paul E. McKenney
2008-05-05 15:32 ` Linus Torvalds
2008-05-05 16:37 ` Hugh Dickins
2008-05-06 9:51 ` Nick Piggin
2008-05-06 14:53 ` Linus Torvalds
2008-05-06 19:11 ` Paul E. McKenney
2008-05-14 4:27 ` Nick Piggin
2008-05-13 8:01 ` Nick Piggin
2008-05-13 15:45 ` Linus Torvalds [this message]
2008-05-14 0:34 ` Nick Piggin
2008-05-14 0:55 ` Linus Torvalds
2008-05-14 1:18 ` Nick Piggin
2008-05-14 4:35 ` [patch 1/2] read_barrier_depends arch fixlets Nick Piggin
2008-05-14 4:37 ` [patch 2/2] fix SMP data race in pagetable setup vs walking Nick Piggin
2008-05-14 13:26 ` [patch 1/2] read_barrier_depends arch fixlets Paul E. McKenney
2008-05-05 16:57 ` [patch 2/2] fix SMP data race in pagetable setup vs walking Hugh Dickins
2008-05-06 9:52 ` Nick Piggin
2008-05-06 7:08 ` David Miller, Nick Piggin
2008-05-06 9:56 ` Nick Piggin
2008-05-05 14:27 ` [patch 1/2] read_barrier_depends fixlets Paul E. McKenney
2008-05-06 9:01 ` Nick Piggin
2008-05-06 14:06 ` Paul E. McKenney
2008-05-06 15:29 ` David Howells
2008-05-06 19:09 ` Paul E. McKenney
2008-05-13 8:05 ` 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=alpine.LFD.1.10.0805130844000.3019@woody.linux-foundation.org \
--to=torvalds@linux-foundation.org \
--cc=hugh@veritas.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=npiggin@suse.de \
--cc=paulmck@us.ibm.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).