From: Matthew Wilcox <willy@infradead.org>
To: Miaohe Lin <linmiaohe@huawei.com>
Cc: akpm@linux-foundation.org, hughd@google.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/mlock: remove unneeded start >= vma->vm_end check
Date: Mon, 14 Mar 2022 16:17:47 +0000 [thread overview]
Message-ID: <Yi9qq9hVloDXcW4b@casper.infradead.org> (raw)
In-Reply-To: <20220314153223.53753-1-linmiaohe@huawei.com>
On Mon, Mar 14, 2022 at 11:32:23PM +0800, Miaohe Lin wrote:
> If find_vma returns a vma, it must satisfies that start < vma->vm_end.
> Since vma list is sorted in the ascending order, so we will never see
> start >= vma->vm_end here. Remove this unneeded check.
faulty logic; vm_start + len might wrap.
next prev parent reply other threads:[~2022-03-14 16:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-14 15:32 Miaohe Lin
2022-03-14 16:17 ` Matthew Wilcox [this message]
2022-03-15 12:30 ` Miaohe Lin
2022-03-31 1:50 ` Miaohe Lin
2022-04-06 9:17 ` Miaohe Lin
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