From: zhong jiang <zhongjiang@huawei.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: <akpm@linux-foundation.org>, <anshuman.khandual@arm.com>,
<mhocko@suse.com>, <mst@redhat.com>, <linux-mm@kvack.org>
Subject: Re: [PATCH] mm: redefine the MAP_SHARED_VALIDATE to other value
Date: Tue, 9 Jul 2019 09:53:19 +0800 [thread overview]
Message-ID: <5D23F38F.5060008@huawei.com> (raw)
In-Reply-To: <20190708144319.GE32320@bombadil.infradead.org>
On 2019/7/8 22:43, Matthew Wilcox wrote:
> On Mon, Jul 08, 2019 at 04:05:41PM +0800, zhong jiang wrote:
>> As the mman manual says, mmap should return fails when we assign
>> the flags to MAP_SHARED | MAP_PRIVATE.
>>
>> But In fact, We run the code successfully and unexpected.
>> It is because MAP_SHARED_VALIDATE is introduced and equal to
>> MAP_SHARED | MAP_PRIVATE.
> No, you don't understand. Look back at the introduction of
> MAP_SHARED_VALIDATE.
>
> .
>
Thanks, I will look at the patch deeply.
Sincerely,
zhong jiang
prev parent reply other threads:[~2019-07-09 1:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-08 8:05 [PATCH] mm: redefine the MAP_SHARED_VALIDATE to other value zhong jiang
2019-07-08 9:20 ` Michal Hocko
2019-07-08 13:52 ` zhong jiang
2019-07-08 16:43 ` Michal Hocko
2019-07-09 1:52 ` zhong jiang
2019-07-08 14:43 ` Matthew Wilcox
2019-07-09 1:53 ` zhong jiang [this message]
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