From: Theodore Tso <tytso@mit.edu>
To: Andreas Dilger <adilger@sun.com>
Cc: David Rientjes <rientjes@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
penberg@cs.helsinki.fi, arjan@infradead.org,
linux-kernel@vger.kernel.org, cl@linux-foundation.org,
npiggin@suse.de, linux-ext4@vger.kernel.org
Subject: Re: upcoming kerneloops.org item: get_page_from_freelist
Date: Thu, 25 Jun 2009 18:05:04 -0400 [thread overview]
Message-ID: <20090625220504.GG6472@mit.edu> (raw)
In-Reply-To: <20090625212628.GO3385@webber.adilger.int>
On Thu, Jun 25, 2009 at 11:26:28PM +0200, Andreas Dilger wrote:
> IIRC there was also a good reason for this in the past, related to
> the buffers being submitted to the block device layer, and if they
> were allocated from the slab cache with CONFIG_DEBUG_SLAB or something
> similar enabled the buffer would be misaligned and cause grief.
So what does SLAB/SLUB/SLOB do if we create a slab cache which is a
power of two? Can one of the allocators still return misaligned
blocks of memory in some circumstances?
- Ted
next prev parent reply other threads:[~2009-06-25 22:05 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <alpine.LFD.2.01.0906241240360.3154@localhost.localdomain>
[not found] ` <20090624130121.99321cca.akpm@linux-foundation.org>
[not found] ` <alpine.LFD.2.01.0906241312090.3154@localhost.localdomain>
[not found] ` <alpine.LFD.2.01.0906241334260.3154@localhost.localdomain>
[not found] ` <20090624150714.c7264768.akpm@linux-foundation.org>
[not found] ` <20090625132544.GB9995@mit.edu>
[not found] ` <alpine.DEB.2.00.0906251135440.30090@chino.kir.corp.google.com>
[not found] ` <20090625193806.GA6472@mit.edu>
[not found] ` <20090625194423.GB6472@mit.edu>
[not found] ` <alpine.DEB.2.00.0906251257040.3086@chino.kir.corp.google.com>
2009-06-25 20:37 ` upcoming kerneloops.org item: get_page_from_freelist Theodore Tso
2009-06-25 21:05 ` Joel Becker
2009-06-25 21:26 ` Andreas Dilger
2009-06-25 22:05 ` Theodore Tso [this message]
2009-06-25 22:11 ` Eric Sandeen
2009-06-26 1:11 ` Theodore Tso
2009-06-26 5:16 ` Pekka J Enberg
2009-06-26 8:56 ` Nick Piggin
2009-06-26 8:58 ` Pekka Enberg
2009-06-26 9:07 ` Nick Piggin
2009-06-29 21:06 ` Christoph Lameter
2009-06-30 7:59 ` Nick Piggin
2009-06-26 14:41 ` Eric Sandeen
2009-06-29 21:15 ` Christoph Lameter
2009-06-29 21:20 ` Eric Sandeen
2009-06-29 22:35 ` Christoph Lameter
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=20090625220504.GG6472@mit.edu \
--to=tytso@mit.edu \
--cc=adilger@sun.com \
--cc=akpm@linux-foundation.org \
--cc=arjan@infradead.org \
--cc=cl@linux-foundation.org \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=npiggin@suse.de \
--cc=penberg@cs.helsinki.fi \
--cc=rientjes@google.com \
--cc=torvalds@linux-foundation.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).