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From: Andrea Arcangeli <aarcange@redhat.com>
To: zhong jiang <zhongjiang@huawei.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Michal Hocko <mhocko@kernel.org>,
	linux-mm@kvack.org, syzkaller-bugs@googlegroups.com,
	syzbot+cbb52e396df3e565ab02@syzkaller.appspotmail.com,
	Mike Rapoport <rppt@linux.vnet.ibm.com>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Peter Xu <peterx@redhat.com>, Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [PATCH 1/1 v2] userfaultfd: use RCU to free the task struct when fork fails
Date: Mon, 29 Apr 2019 10:37:11 -0400	[thread overview]
Message-ID: <20190429143711.GA11265@redhat.com> (raw)
In-Reply-To: <5CC69B6C.9090608@huawei.com>

Hello,

On Mon, Apr 29, 2019 at 02:36:28PM +0800, zhong jiang wrote:
> if we disable the CONFIG_MEMCG,  __delay_free_task will not to be used.

Yes, the compiler optimizes that away at build time.

Thanks,
Andrea


  reply	other threads:[~2019-04-29 21:32 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-25 22:56 [PATCH 0/2] userfaultfd: use RCU to free the task struct when fork fails Andrea Arcangeli
2019-03-25 22:56 ` [PATCH 1/2] " Andrea Arcangeli
2019-03-26  8:07   ` Kirill Tkhai
2019-03-26  8:18     ` Kirill Tkhai
2019-03-26  8:19       ` Kirill Tkhai
2019-03-26  8:56   ` Michal Hocko
2019-03-27  0:16     ` Andrea Arcangeli
2019-03-27  8:49       ` Michal Hocko
2019-04-26  4:48         ` Andrew Morton
2019-04-29  3:57         ` [PATCH 1/1 v2] " Andrea Arcangeli
2019-04-29  6:36           ` zhong jiang
2019-04-29 14:37             ` Andrea Arcangeli [this message]
2019-03-25 22:56 ` [PATCH 2/2] mm: change mm_update_next_owner() to update mm->owner with WRITE_ONCE Andrea Arcangeli

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