From: Matthew Wilcox <willy@infradead.org>
To: cl@linux.com
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>,
dsterba@suse.cz, Vlastimil Babka <vbabka@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Ming Lei <ming.lei@redhat.com>,
Dave Chinner <david@fromorbit.com>,
Christoph Hellwig <hch@lst.de>,
linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-block@vger.kernel.org,
James Bottomley <James.Bottomley@hansenpartnership.com>,
linux-btrfs@vger.kernel.org, Roman Gushchin <guro@fb.com>,
Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH v2 2/2] mm, sl[aou]b: guarantee natural alignment for kmalloc(power-of-two)
Date: Tue, 24 Sep 2019 13:51:33 -0700 [thread overview]
Message-ID: <20190924205133.GK1855@bombadil.infradead.org> (raw)
In-Reply-To: <alpine.DEB.2.21.1909242045250.17661@www.lameter.com>
On Tue, Sep 24, 2019 at 08:47:52PM +0000, cl@linux.com wrote:
> On Mon, 23 Sep 2019, Darrick J. Wong wrote:
>
> > On Mon, Sep 23, 2019 at 07:17:10PM +0200, David Sterba wrote:
> > > On Mon, Sep 23, 2019 at 06:36:32PM +0200, Vlastimil Babka wrote:
> > > > So if anyone thinks this is a good idea, please express it (preferably
> > > > in a formal way such as Acked-by), otherwise it seems the patch will be
> > > > dropped (due to a private NACK, apparently).
> >
> > Oh, I didn't realize ^^^^^^^^^^^^ that *some* of us are allowed the
> > privilege of gutting a patch via private NAK without any of that open
> > development discussion incovenience. <grumble>
>
> There was a public discussion about this issue and from what I can tell
> the outcome was that the allocator already provides what you want. Which
> was a mechanism to misalign objects and detect these issues. This
> mechanism has been in use for over a decade.
You missed the important part, which was *ENABLED BY DEFAULT*. People
who are enabling a debugging option to debug their issues, should not
have to first debug all the other issues that enabling that debugging
option uncovers!
next prev parent reply other threads:[~2019-09-24 20:51 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-26 11:16 [PATCH v2 0/2] guarantee natural alignment for kmalloc() Vlastimil Babka
2019-08-26 11:16 ` [PATCH v2 1/2] mm, sl[ou]b: improve memory accounting Vlastimil Babka
2019-08-26 11:16 ` [PATCH v2 2/2] mm, sl[aou]b: guarantee natural alignment for kmalloc(power-of-two) Vlastimil Babka
2019-08-28 18:45 ` Christopher Lameter
2019-08-28 18:45 ` Christopher Lameter
2019-08-28 19:46 ` Matthew Wilcox
2019-08-28 22:24 ` Dave Chinner
2019-08-29 7:56 ` Vlastimil Babka
2019-08-30 0:29 ` Dave Chinner
2019-08-29 7:39 ` Michal Hocko
2019-08-30 17:41 ` Christopher Lameter
2019-08-30 17:41 ` Christopher Lameter
2019-09-01 0:52 ` Matthew Wilcox
2019-09-03 20:13 ` Christopher Lameter
2019-09-03 20:13 ` Christopher Lameter
2019-09-03 20:53 ` Matthew Wilcox
2019-09-04 5:19 ` Christoph Hellwig
2019-09-04 6:40 ` Ming Lei
2019-09-04 7:20 ` Vlastimil Babka
2019-09-04 19:31 ` Christopher Lameter
2019-09-04 19:31 ` Christopher Lameter
2019-09-23 16:36 ` Vlastimil Babka
2019-09-23 17:17 ` David Sterba
2019-09-23 17:51 ` Darrick J. Wong
2019-09-24 20:47 ` cl
2019-09-24 20:47 ` cl
2019-09-24 20:51 ` Matthew Wilcox [this message]
2019-09-24 20:55 ` cl
2019-09-24 20:55 ` cl
2019-09-26 13:02 ` David Sterba
2019-09-24 21:19 ` Vlastimil Babka
2019-09-24 21:53 ` Dave Chinner
2019-09-24 22:21 ` Darrick J. Wong
2019-09-24 20:52 ` cl
2019-09-24 20:52 ` cl
2019-09-24 23:54 ` Andrew Morton
2019-09-25 7:17 ` Vlastimil Babka
2019-09-26 0:16 ` Christopher Lameter
2019-09-26 0:16 ` Christopher Lameter
2019-09-26 0:14 ` Christopher Lameter
2019-09-26 0:14 ` Christopher Lameter
2019-09-26 7:41 ` Vlastimil Babka
2019-09-28 1:12 ` Christopher Lameter
2019-09-28 1:12 ` Christopher Lameter
2019-09-30 13:32 ` Matthew Wilcox
2019-09-23 17:54 ` Roman Gushchin
2019-09-30 8:06 ` Christoph Hellwig
2019-09-30 9:23 ` Michal Hocko
2019-09-30 9:32 ` Kirill A. Shutemov
2019-09-23 18:57 ` Matthew Wilcox
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