From: Andrew Morton <akpm@linux-foundation.org>
To: linmiaohe <linmiaohe@huawei.com>
Cc: <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: mmap: Merge vma after call_mmap() if possible
Date: Mon, 13 Jul 2020 20:20:35 -0700 [thread overview]
Message-ID: <20200713202035.55ea84d08a1c39423603f592@linux-foundation.org> (raw)
In-Reply-To: <1594696064-1409-1-git-send-email-linmiaohe@huawei.com>
On Tue, 14 Jul 2020 11:07:44 +0800 linmiaohe <linmiaohe@huawei.com> wrote:
> The vm_flags may be changed after call_mmap() because drivers may set some
> flags for their own purpose. As a result, we failed to merge the adjacent
> vma due to the different vm_flags as userspace can't pass in the same one.
> Try to merge vma after call_mmap() to fix this issue.
Which drivers do this?
next prev parent reply other threads:[~2020-07-14 3:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-14 3:07 [PATCH] mm: mmap: Merge vma after call_mmap() if possible linmiaohe
2020-07-14 3:20 ` Andrew Morton [this message]
2020-07-16 22:24 ` Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2020-07-14 3:55 linmiaohe
2020-07-16 7:33 linmiaohe
2020-07-17 1:04 linmiaohe
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