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[209.85.220.65]) by mx.google.com with SMTPS id e18sor4995271wrc.51.2019.05.16.10.24.56 for (Google Transport Security); Thu, 16 May 2019 10:24:56 -0700 (PDT) Received-SPF: pass (google.com: domain of adobriyan@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=tsFelydZ; spf=pass (google.com: domain of adobriyan@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=adobriyan@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=GwdAfYvM41KiSLkhlq7rAt3w1iZyUAjGI7qrOqoVW5o=; b=tsFelydZLhNvYDfeLAWpd9ZwFCHCG8AiKyuzgsSzXz4v0flYaDVLn//dqRSH9pssXd 5dbeqhtnk38ShQidfbi+qNj3cWXAa0IZrsjoInLiJzcOJ8WKNS1AI7PHiiE048Ii6xZh IMalHDtjMxy8w+V1gZkq9SzxF36wgJAPkEx8cIMCuk7lF6NlCT1TBDxLsZ1r2ieLwTC6 Qey5JgIKurXACewo03AC9iyGB8S9j88Oia/0rfC6MiZSwmiv6Hg8CXc/g6fNuZGzMcYy ITUVxvgb2V8EAfKxI9902rM1Ku1TFSOQ/XQbNIKM/NRcryk4SperNpY36Z45a+xCt4UR E8SQ== X-Google-Smtp-Source: APXvYqxXhyZaIbtY/Sjz0UTDsBri4w8N4SWVTBL/lOnSyeL4B2It+7qNhzKrwBJjN1ueL0PAiOqHdw== X-Received: by 2002:adf:8bc5:: with SMTP id w5mr16879957wra.226.1558027496104; Thu, 16 May 2019 10:24:56 -0700 (PDT) Received: from avx2 ([46.53.251.158]) by smtp.gmail.com with ESMTPSA id a22sm4350148wma.41.2019.05.16.10.24.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 16 May 2019 10:24:55 -0700 (PDT) Date: Thu, 16 May 2019 20:24:52 +0300 From: Alexey Dobriyan To: Oleksandr Natalenko Cc: linux-kernel@vger.kernel.org, Kirill Tkhai , Hugh Dickins , Vlastimil Babka , Michal Hocko , Matthew Wilcox , Pavel Tatashin , Greg KH , Suren Baghdasaryan , Minchan Kim , Timofey Titovets , Aaron Tomlin , Grzegorz Halat , linux-mm@kvack.org, linux-api@vger.kernel.org Subject: Re: [PATCH RFC 0/5] mm/ksm, proc: introduce remote madvise Message-ID: <20190516172452.GA2106@avx2> References: <20190516094234.9116-1-oleksandr@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190516094234.9116-1-oleksandr@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) 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, May 16, 2019 at 11:42:29AM +0200, Oleksandr Natalenko wrote: > * to mark all the eligible VMAs as mergeable, use: > > # echo merge > /proc//madvise > > * to unmerge all the VMAs, use: > > # echo unmerge > /proc//madvise Please make a real system call (or abuse prctl(2) passing target's pid). Your example automerge daemon could just call it and not bother with /proc.