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Thu, 11 Mar 2021 13:26:30 -0800 (PST) Date: Thu, 11 Mar 2021 16:26:28 -0500 From: Peter Xu To: David Hildenbrand Cc: Linux Memory Management List , Minchan Kim , Matthew Wilcox , Rik van Riel , Michal Hocko , Andrea Arcangeli Subject: Re: Page zapping and page table reclaim Message-ID: <20210311212628.GK194839@xz-x1> References: MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=peterx@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline X-Stat-Signature: y7ncrh7rdsxqbqatwkqyrbgajfotnb7x X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 14A826000108 Received-SPF: none (redhat.com>: No applicable sender policy available) receiver=imf25; identity=mailfrom; envelope-from=""; helo=us-smtp-delivery-124.mimecast.com; client-ip=63.128.21.124 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1615497993-590971 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Mar 11, 2021 at 07:14:02PM +0100, David Hildenbrand wrote: > I was wondering, is there any mechanism that reclaims basically empty page > tables in a running process? Would munmap() count? :) -- Peter Xu