From: Matthew Wilcox <willy@infradead.org>
To: Yang Shi <yang.shi@linux.alibaba.com>
Cc: mhocko@kernel.org, ldufour@linux.vnet.ibm.com, vbabka@suse.cz,
kirill@shutemov.name, akpm@linux-foundation.org,
dave.hansen@intel.com, oleg@redhat.com,
srikar@linux.vnet.ibm.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC v10 PATCH 3/3] mm: unmap VM_PFNMAP mappings with optimized path
Date: Sat, 15 Sep 2018 02:45:15 -0700 [thread overview]
Message-ID: <20180915094515.GC31572@bombadil.infradead.org> (raw)
In-Reply-To: <1536957299-43536-4-git-send-email-yang.shi@linux.alibaba.com>
On Sat, Sep 15, 2018 at 04:34:59AM +0800, Yang Shi wrote:
> When unmapping VM_PFNMAP mappings, vm flags need to be updated. Since
> the vmas have been detached, so it sounds safe to update vm flags with
> read mmap_sem.
>
> Cc: Michal Hocko <mhocko@kernel.org>
> Cc: Vlastimil Babka <vbabka@suse.cz>
> Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
Reviewed-by: Matthew Wilcox <willy@infradead.org>
next prev parent reply other threads:[~2018-09-15 9:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-14 20:34 [RFC v10 PATCH 0/3] mm: zap pages with read mmap_sem in munmap for large mapping Yang Shi
2018-09-14 20:34 ` [RFC v10 PATCH 1/3] mm: mmap: zap pages with read mmap_sem in munmap Yang Shi
2018-09-15 9:21 ` Matthew Wilcox
2018-09-17 19:49 ` Yang Shi
2018-09-14 20:34 ` [RFC v10 PATCH 2/3] mm: unmap VM_HUGETLB mappings with optimized path Yang Shi
2018-09-15 9:44 ` Matthew Wilcox
2018-09-14 20:34 ` [RFC v10 PATCH 3/3] mm: unmap VM_PFNMAP " Yang Shi
2018-09-15 9:45 ` Matthew Wilcox [this message]
2018-09-15 10:10 ` [RFC v10 PATCH 0/3] mm: zap pages with read mmap_sem in munmap for large mapping Matthew Wilcox
2018-09-17 20:00 ` Yang Shi
2018-09-18 10:37 ` Matthew Wilcox
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