From: Andrew Morton <akpm@linux-foundation.org>
To: <wuyun.wu@huawei.com>
Cc: Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
"David Rientjes" <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>, <liu.xiang6@zte.com.cn>,
"open list:SLAB ALLOCATOR" <linux-mm@kvack.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm/slub: make add_full() condition more explicit
Date: Wed, 19 Aug 2020 12:37:13 -0700 [thread overview]
Message-ID: <20200819123713.38a2509a2b7651f14db33e61@linux-foundation.org> (raw)
In-Reply-To: <20200811020240.1231-1-wuyun.wu@huawei.com>
On Tue, 11 Aug 2020 10:02:36 +0800 <wuyun.wu@huawei.com> wrote:
> From: Abel Wu <wuyun.wu@huawei.com>
>
> The commit below is incomplete, as it didn't handle the add_full() part.
> commit a4d3f8916c65 ("slub: remove useless kmem_cache_debug() before remove_full()")
>
> This patch checks for SLAB_STORE_USER instead of kmem_cache_debug(),
> since that should be the only context in which we need the list_lock for
> add_full().
>
Does this contradict what the comment tells us?
* This also ensures that the scanning of full
* slabs from diagnostic functions will not see
* any frozen slabs.
next prev parent reply other threads:[~2020-08-19 19:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-11 2:02 [PATCH] mm/slub: make add_full() condition more explicit wuyun.wu
2020-08-17 9:19 ` Abel Wu
2020-08-19 19:37 ` Andrew Morton [this message]
2020-08-20 1:56 ` Abel Wu
2020-10-16 16:58 ` Vlastimil Babka
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