From: Johannes Weiner <hannes@cmpxchg.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@kvack.org, Matthew Wilcox <mawilcox@microsoft.com>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, Jan Kara <jack@suse.cz>,
Jeff Layton <jlayton@redhat.com>,
Mel Gorman <mgorman@techsingularity.net>,
stable@vger.kernel.org
Subject: Re: [PATCH 1/2] slab: __GFP_ZERO is incompatible with a constructor
Date: Tue, 10 Apr 2018 09:00:19 -0400 [thread overview]
Message-ID: <20180410130019.GA7010@cmpxchg.org> (raw)
In-Reply-To: <20180410125351.15837-1-willy@infradead.org>
On Tue, Apr 10, 2018 at 05:53:50AM -0700, Matthew Wilcox wrote:
> From: Matthew Wilcox <mawilcox@microsoft.com>
>
> __GFP_ZERO requests that the object be initialised to all-zeroes,
> while the purpose of a constructor is to initialise an object to a
> particular pattern. We cannot do both. Add a warning to catch any
> users who mistakenly pass a __GFP_ZERO flag when allocating a slab with
> a constructor.
>
> Fixes: d07dbea46405 ("Slab allocators: support __GFP_ZERO in all allocators")
> Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
> Cc: stable@vger.kernel.org
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
next prev parent reply other threads:[~2018-04-10 12:58 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-10 12:53 Matthew Wilcox
2018-04-10 12:53 ` [PATCH 2/2] page cache: Mask off unwanted GFP flags Matthew Wilcox
2018-04-10 13:08 ` Johannes Weiner
2018-04-10 13:09 ` Michal Hocko
2018-04-10 13:45 ` Minchan Kim
2018-04-10 14:02 ` Matthew Wilcox
2018-04-10 15:18 ` Jaegeuk Kim
2018-04-10 13:46 ` Jan Kara
2018-04-10 13:00 ` Johannes Weiner [this message]
2018-04-10 13:07 ` [PATCH 1/2] slab: __GFP_ZERO is incompatible with a constructor Michal Hocko
2018-04-10 13:40 ` Vlastimil Babka
2018-04-10 13:53 ` Eric Dumazet
2018-04-10 16:50 ` Matthew Wilcox
2018-04-10 17:30 ` Christopher Lameter
2018-04-10 17:38 ` Matthew Wilcox
2018-04-10 17:45 ` Christopher Lameter
2018-04-10 17:50 ` Matthew Wilcox
2018-04-10 20:21 ` Christopher Lameter
2018-04-10 14:21 ` Christopher Lameter
2018-04-10 14:26 ` Christopher Lameter
2018-04-10 15:54 ` Matthew Wilcox
2018-04-10 17:04 ` Christopher Lameter
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