From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-23.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E79FBC433C1 for ; Fri, 26 Mar 2021 18:09:23 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3C63461A24 for ; Fri, 26 Mar 2021 18:09:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3C63461A24 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 76AF06B0070; Fri, 26 Mar 2021 14:09:22 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 71A536B0071; Fri, 26 Mar 2021 14:09:22 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5CDB66B0074; Fri, 26 Mar 2021 14:09:22 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0158.hostedemail.com [216.40.44.158]) by kanga.kvack.org (Postfix) with ESMTP id 416A36B0070 for ; Fri, 26 Mar 2021 14:09:22 -0400 (EDT) Received: from smtpin08.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id E48A48249980 for ; Fri, 26 Mar 2021 18:09:21 +0000 (UTC) X-FDA: 77962812522.08.5A56A4E Received: from mail-ej1-f42.google.com (mail-ej1-f42.google.com [209.85.218.42]) by imf29.hostedemail.com (Postfix) with ESMTP id C0D4478B for ; Fri, 26 Mar 2021 18:09:16 +0000 (UTC) Received: by mail-ej1-f42.google.com with SMTP id w3so9751888ejc.4 for ; Fri, 26 Mar 2021 11:09:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=wJYWZrUOznq0gpgX+7FMB7DloEhRAZMNbdCMtRU9Qgc=; b=o2nny/72vAvvu3xrH7brAGF8mlfk7Odb4OIATJAM4GtkSimXsGri85d7ZnWgnsR+pi RKXwu9zm92uG0OLTPMoDqrarq5wip8a/V9b64KeN09SP1KPWUkcZq81Sr6aXZT/ZO2IB 6DCnrzYJTPzb/WuSdNP5cQeeF7P9xYRy2Qob1MZ9B7Z46Rmiabl+iCjAR1b08XG6wG+i EILmXXBUICz4XZJJ+yUoxDYdFDJQcsy7JhyghCTFHx4gO5LB/myplcKn0xyU1oW7YqD+ GEeHufTFCBuyAY1LBhzHoyLEDmDW4ul80u8zSRXrgrk7SLeBA3pWoTQwVAgH4Kj9mowu 37ZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=wJYWZrUOznq0gpgX+7FMB7DloEhRAZMNbdCMtRU9Qgc=; b=PzYFi4sCe1lnqW4g9Q/3tHhYx/ngPilPzVXDDSorbESQhaDVyS53ufXOqlblzC1Zec NCrbxOSzSU9Sz3kuR9WTq/5KaDeZgeSnhR1NbCdHSXBaWbRBF0gmBeY44SSqQ4s/kt40 QCa/p1P3f8VNU8O6hJu5/lHbXg19ywRqpO74hBAd9ay91uxL0DeFdahje0P378UMiDKD GWR3BN/S7t7vXq0ZeCbBgZ8qy73GdfTkZ1MWwIsMpSly3KC6eFuI8iE6Wc7Q9xkh56M5 XX8zv5sBfSCNWXHoozt83fBKEH6HPu2D9rDzRE947men8woSseVeOEVJLZDSW4WsXskx MxCg== X-Gm-Message-State: AOAM531Pxgz2v54PXOjAl9VQlvMt1XX9VKDtLShw9CLfv6Aq58kam/z0 jCJV53AM8kYvS+knSgdzAuXc7VVpAzBOo9tNielVFg== X-Google-Smtp-Source: ABdhPJyrMPX9Hu9Cddt1IC5mdi2AfAIfufvUOht7vRbfCSAB+9QKFnAtUccbaxh0zGkwtUKrAd8aTymLA4kJ2BkrNec= X-Received: by 2002:a17:907:33cd:: with SMTP id zk13mr16676396ejb.224.1616782156485; Fri, 26 Mar 2021 11:09:16 -0700 (PDT) MIME-Version: 1.0 References: <20210303175235.3308220-1-bgeffon@google.com> <20210323182520.2712101-1-bgeffon@google.com> <20210323182520.2712101-4-bgeffon@google.com> <9c0b4b2a-3678-186a-072a-280628e5da02@gmail.com> In-Reply-To: <9c0b4b2a-3678-186a-072a-280628e5da02@gmail.com> From: Brian Geffon Date: Fri, 26 Mar 2021 11:08:40 -0700 Message-ID: Subject: Re: [PATCH] mremap.2: MREMAP_DONTUNMAP to reflect to supported mappings To: "Alejandro Colomar (man-pages)" Cc: Axel Rasmussen , Lokesh Gidra , Mike Rapoport , Peter Xu , Hugh Dickins , "Michael S . Tsirkin" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andy Lutomirski , Vlastimil Babka , Andrea Arcangeli , Sonny Rao , Minchan Kim , "Kirill A . Shutemov" , Dmitry Safonov , Michael Kerrisk , Andrew Morton Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: w4qttewwy6r87etswtfoxsjh3u7jo4c6 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: C0D4478B Received-SPF: none (google.com>: No applicable sender policy available) receiver=imf29; identity=mailfrom; envelope-from=""; helo=mail-ej1-f42.google.com; client-ip=209.85.218.42 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1616782156-184931 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: Hi Alex, It has not landed yet, it's currently in Andrew's mm tree. I can reach out again when it makes it into Linus' tree. Brian On Thu, Mar 25, 2021 at 2:34 PM Alejandro Colomar (man-pages) wrote: > > Hello Brian, > > Is this already merged in Linux? I guess not, as I've seen a patch of > yous for the kernel, right? > > Thanks, > > Alex > > On 3/23/21 7:25 PM, Brian Geffon wrote: > > mremap(2) now supports MREMAP_DONTUNMAP with mapping types other > > than private anonymous. > > > > Signed-off-by: Brian Geffon > > --- > > man2/mremap.2 | 13 ++----------- > > 1 file changed, 2 insertions(+), 11 deletions(-) > > > > diff --git a/man2/mremap.2 b/man2/mremap.2 > > index 3ed0c0c0a..72acbc111 100644 > > --- a/man2/mremap.2 > > +++ b/man2/mremap.2 > > @@ -118,16 +118,6 @@ This flag, which must be used in conjunction with > > remaps a mapping to a new address but does not unmap the mapping at > > .IR old_address . > > .IP > > -The > > -.B MREMAP_DONTUNMAP > > -flag can be used only with private anonymous mappings > > -(see the description of > > -.BR MAP_PRIVATE > > -and > > -.BR MAP_ANONYMOUS > > -in > > -.BR mmap (2)). > > -.IP > > After completion, > > any access to the range specified by > > .IR old_address > > @@ -227,7 +217,8 @@ was specified, but one or more pages in the range specified by > > .IR old_address > > and > > .IR old_size > > -were not private anonymous; > > +were part of a special mapping or the mapping is one that > > +does not support merging or expanding; > > .IP * > > .B MREMAP_DONTUNMAP > > was specified and > > > > -- > Alejandro Colomar > Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/ > http://www.alejandro-colomar.es/