From: Hugh Dickins <hughd@google.com>
To: David Laight <David.Laight@aculab.com>
Cc: Hugh Dickins <hughd@google.com>, Vlastimil Babka <vbabka@suse.cz>,
Joel Fernandes <joel@joelfernandes.org>,
Hyeonggon Yoo <42.hyeyoo@gmail.com>,
Matthew Wilcox <willy@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: RE: amusing SLUB compaction bug when CC_OPTIMIZE_FOR_SIZE
Date: Fri, 30 Sep 2022 09:21:44 -0700 (PDT) [thread overview]
Message-ID: <06329f-e498-ccc-6223-32f87716436d@google.com> (raw)
In-Reply-To: <c1c8920a56014a179dbb82d483f2ad28@AcuMS.aculab.com>
On Fri, 30 Sep 2022, David Laight wrote:
> > > > Regarding "conflicting" alignment requests: yes, I agree with you,
> > > > it would have to be a toolchain bug if when asked to align 2 and to
> > > > align 4, it chose not to align 4.
>
> See https://godbolt.org/z/3nGsTaf5e
> the align() directive takes precedence.
>
> Here you only want to ensure the alignment is at least 4.
Sorry, I don't understand the point you are making,
nor how to deduce it from the link which you give:
I'll leave it to those who understand better.
Hugh
next prev parent reply other threads:[~2022-09-30 16:21 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-28 5:16 amusing SLUB compaction bug when CC_OPTIMIZE_FOR_SIZE Hugh Dickins
2022-09-28 5:49 ` Hyeonggon Yoo
2022-09-28 13:48 ` Joel Fernandes
2022-09-28 15:09 ` Hyeonggon Yoo
2022-09-28 16:20 ` Vlastimil Babka
2022-09-28 17:50 ` Hugh Dickins
2022-09-29 9:58 ` Vlastimil Babka
2022-09-29 21:54 ` Hugh Dickins
2022-09-30 7:39 ` Vlastimil Babka
2022-09-30 10:45 ` Hugh Dickins
2022-09-30 11:02 ` David Laight
2022-09-30 16:21 ` Hugh Dickins [this message]
2022-09-30 21:34 ` David Laight
2022-10-02 5:48 ` Hyeonggon Yoo
2022-10-03 17:00 ` Matthew Wilcox
2022-10-04 14:26 ` Hyeonggon Yoo
2022-10-04 14:40 ` Matthew Wilcox
2022-10-05 11:07 ` Hyeonggon Yoo
2022-10-24 14:35 ` Vlastimil Babka
2022-10-24 15:06 ` Matthew Wilcox
2022-10-24 15:24 ` Vlastimil Babka
2022-10-24 16:49 ` Vlastimil Babka
2022-10-25 4:19 ` Hugh Dickins
2022-10-25 9:17 ` Vlastimil Babka
2022-10-25 15:45 ` Hugh Dickins
2022-10-25 13:47 ` Hyeonggon Yoo
2022-10-25 14:08 ` Vlastimil Babka
2022-10-26 10:52 ` Vlastimil Babka
2022-10-26 12:29 ` Hyeonggon Yoo
2022-11-04 15:57 ` Vlastimil Babka
2022-09-29 11:53 ` David Laight
2022-09-29 13:01 ` Vlastimil Babka
2022-09-29 14:04 ` David Laight
2022-09-28 17:56 ` Hyeonggon Yoo
2022-09-28 19:53 ` Joel Fernandes
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