linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>, Greg KH <gregkh@suse.de>,
	Thomas Gleixner <tglx@linutronix.de>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Jens Axboe <axboe@kernel.dk>,
	Alexander Viro <viro@ftp.linux.org.uk>,
	"Theodore Ts'o" <tytso@mit.edu>, "H. Peter Anvin" <hpa@zytor.com>,
	Laura Abbott <lauraa@codeaurora.org>,
	Mel Gorman <mgorman@suse.de>
Subject: Re: [-rc7 regression] Buggy commit: "mm: use aligned zone start for pfn_to_bitidx calculation"
Date: Sat, 16 Feb 2013 11:51:03 -0800	[thread overview]
Message-ID: <CA+55aFwL3+sk4LkwgoV53Qe_F=EkA79mvpRY5ssBopyqiJCf9Q@mail.gmail.com> (raw)
In-Reply-To: <CAE9FiQVnBeNEOgH4b+=FywMCnR-u7afADXK2KaiU+aSR+UcDYw@mail.gmail.com>

On Sat, Feb 16, 2013 at 11:38 AM, Yinghai Lu <yinghai@kernel.org> wrote:
>
> but you forgot to update setup_usemap() for SPARSEMEM

Heh. I tried desperately to find a config to test my patch in, because
I couldn't see how to even disable SPARSEMEM for my normal x86-64
build. But then I *only* tested it for that non-SPARSEMEM case,
expecting that to be what showed any problems. The fact that I didn't
bother testing my normal config is a bit ironic.

But I'd still like verification that it actually fixes Ingo's issue.
It *looks* like it should, and it would explain the potential for
memory corruption, but perhaps Ingo's odd lock-up is due to something
really subtle and unrelated to the actual allocation size.

                Linus

  reply	other threads:[~2013-02-16 19:51 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-08 21:51 Linux v3.8-rc7 Linus Torvalds
2013-02-10  0:14 ` [REGRESSION] -rc7/-rc4+: unable to USB boot - enumeration partially broken (was: Linux v3.8-rc7) Andreas Mohr
2013-02-10 14:05   ` Andreas Mohr
2013-02-12 16:07     ` Andreas Mohr
2013-02-12 16:16       ` Greg KH
2013-02-12 21:25         ` Andreas Mohr
2013-02-13  6:44         ` [REGRESSION] [nailed] USB boot failure: USB: EHCI: make ehci-pci a separate driver Andreas Mohr
2013-02-13  7:16           ` Andreas Mohr
2013-02-13  7:44             ` Andreas Mohr
2013-02-13 10:05               ` Andreas Mohr
2013-02-13 10:50                 ` Colin Guthrie
2013-02-13 16:13                   ` Andreas Mohr
2013-02-13 16:26                     ` Colin Guthrie
2013-02-13 11:10 ` [-rc7 regression] Block IO/VFS/ext3/timer spinlock lockup? Ingo Molnar
2013-02-13 16:59   ` Linus Torvalds
2013-02-13 23:20     ` Thomas Gleixner
2013-02-14 14:45       ` Ingo Molnar
2013-02-14 14:54         ` Ingo Molnar
2013-02-14 15:08           ` Ingo Molnar
2013-02-14 17:28             ` Thomas Gleixner
2013-02-14 18:22             ` Yinghai Lu
2013-02-15 11:44               ` [-rc7 regression] Buggy commit: "mm: use aligned zone start for pfn_to_bitidx calculation" Ingo Molnar
2013-02-15 22:06                 ` Greg KH
2013-02-16  8:29                   ` Ingo Molnar
2013-03-01 16:50                     ` Greg KH
2013-03-01 17:07                       ` Linus Torvalds
2013-03-01 17:14                         ` Greg KH
2013-02-16  8:25                 ` Ingo Molnar
2013-02-16 18:26                 ` Linus Torvalds
2013-02-16 19:38                   ` Yinghai Lu
2013-02-16 19:51                     ` Linus Torvalds [this message]
2013-02-18  8:49                   ` Ingo Molnar
2013-02-18 14:46                   ` Mel Gorman
2013-02-18 18:42                     ` Laura Abbott
2013-02-14 23:05   ` [-rc7 regression] Block IO/VFS/ext3/timer spinlock lockup? Linus Torvalds
2013-02-15 11:39     ` [PATCH] spinlock/debugging: Print out lock name when available Ingo Molnar

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='CA+55aFwL3+sk4LkwgoV53Qe_F=EkA79mvpRY5ssBopyqiJCf9Q@mail.gmail.com' \
    --to=torvalds@linux-foundation.org \
    --cc=axboe@kernel.dk \
    --cc=gregkh@suse.de \
    --cc=hpa@zytor.com \
    --cc=lauraa@codeaurora.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mgorman@suse.de \
    --cc=mingo@kernel.org \
    --cc=tglx@linutronix.de \
    --cc=tytso@mit.edu \
    --cc=viro@ftp.linux.org.uk \
    --cc=yinghai@kernel.org \
    /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).