From: Yang Shi <yang.shi@linux.alibaba.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>,
willy@infradead.org, ldufour@linux.vnet.ibm.com,
akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC v4 0/3] mm: zap pages with read mmap_sem in munmap for large mapping
Date: Thu, 12 Jul 2018 16:45:18 -0700 [thread overview]
Message-ID: <f47b5a41-3fb1-ac81-1ead-78e4ac5fae51@linux.alibaba.com> (raw)
In-Reply-To: <20180712080418.GC32648@dhcp22.suse.cz>
On 7/12/18 1:04 AM, Michal Hocko wrote:
> On Wed 11-07-18 10:04:48, Yang Shi wrote:
> [...]
>> One approach is to save all the vmas on a separate list, then zap_page_range
>> does unmap with this list.
> Just detached unmapped vma chain from mm. You can keep the existing
> vm_next chain and reuse it.
Yes. Other than this, we still need do:
* Tell zap_page_range not update vm_flags as what I did in v4. Of
course without VM_DEAD this time
* Extract pagetable free code then do it after zap_page_range. I
think I can just cal free_pgd_range() directly.
>
prev parent reply other threads:[~2018-07-12 23:45 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-10 23:34 [RFC v4 0/3] mm: zap pages with read mmap_sem in munmap for large mapping Yang Shi
2018-07-10 23:34 ` [RFC v4 PATCH 1/3] mm: introduce VM_DEAD flag and extend check_stable_address_space to check it Yang Shi
2018-07-10 23:34 ` [RFC v4 PATCH 2/3] mm: refactor do_munmap() to extract the common part Yang Shi
2018-07-10 23:34 ` [RFC v4 PATCH 3/3] mm: mmap: zap pages with read mmap_sem for large mapping Yang Shi
2018-07-11 10:33 ` [RFC v4 0/3] mm: zap pages with read mmap_sem in munmap " Michal Hocko
2018-07-11 11:13 ` Kirill A. Shutemov
2018-07-11 11:53 ` Michal Hocko
2018-07-11 17:08 ` Yang Shi
2018-07-11 16:57 ` Yang Shi
2018-07-11 22:49 ` Andrew Morton
2018-07-12 8:15 ` Michal Hocko
2018-07-11 11:10 ` Kirill A. Shutemov
2018-07-11 11:58 ` Michal Hocko
2018-07-11 17:04 ` Yang Shi
2018-07-12 8:04 ` Michal Hocko
2018-07-12 23:45 ` Yang Shi [this message]
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