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=-26.3 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, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable 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 394F6C433E8 for ; Tue, 23 Mar 2021 16:27:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1548961477 for ; Tue, 23 Mar 2021 16:27:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233304AbhCWQ1C (ORCPT ); Tue, 23 Mar 2021 12:27:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46228 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233169AbhCWQ0Z (ORCPT ); Tue, 23 Mar 2021 12:26:25 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D98FC061574 for ; Tue, 23 Mar 2021 09:26:25 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id e129so3143441yba.3 for ; Tue, 23 Mar 2021 09:26:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=XqDxfe4GGK69zvJtB/kYAUp+QZJt4kx+lv6J7Sr9tRs=; b=BN4R/SJlfmcF5MRIrxPoBwW20iiC/MHlTCW0VYed+6puAkNQS0W8hNYSc0z3VZrKU7 SdXClPSNc/C/NYsLV4vTi4vZNc0/AGi6qDvqmUlUHAWNi4uLCVSE5gkZW6mJVHRL99mI ltJGMNh4n8loh4cIEsHnQsKiC39Ni2bg1YeHvygmRR2iWfGS8EZTOCZ0I1Vx0j9d9YYP cZ8DxeGA/D6uP80gCQxVsnPLg8Gp/0X4PGa1LkJArMpKk0FZ8bqNE7gVDZcdP2rFckJK ufL1CAcGTTDMXnnUszwKKTePG8XQ5cGF2FOgn72T31iZNhUwepjLyvL4po2DtVT06tOU u08w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=XqDxfe4GGK69zvJtB/kYAUp+QZJt4kx+lv6J7Sr9tRs=; b=qG5ST2SHCFw3oJJ0ke0UF1CdhmejH+qVNAsq9tbp4Piwy5QXzYKCeKcgYzeJKNDkqh waN4xiW7LU9utIRPy/+qy3veDH13pX8ZqhcicSHyZ+9mtS3g2n6GSTwswxUd1jUH6UuH Bya10LGTvid9Vef2rQPySFDBEpGbMYl+54btTfm0aCGCZJ3xYkoMnDihHTsMH0Q19MVe somFifeGgSWYfF53JrFD7W+s6eayPwTzGk5/meP5CM1/zlsEMHFaQeT9iTWIFZ8+6ttM viOmY41OsLpUh3g+hQAdVYeqvRhQs5DR6t29Gndn7V/W+kictrt2JahTJ4308OJsZGq4 rYbw== X-Gm-Message-State: AOAM532fJstPMcRZvku3LbUcpo8xcOaS2unOlm9PpAHVgbxa9ai7U1Tz ATb8DIQrV92NcJZzsz3/I9uVh3X3xdd5 X-Google-Smtp-Source: ABdhPJyY6VFYJLcVfPwJqFGB/P8vkSlXhFXE+bJzCD7z0F2IHTQD7BmT8z01lHuh89TOcB3QZeNXivPGk6B0 X-Received: from bg.sfo.corp.google.com ([2620:15c:8:10:b5cc:cacb:2875:ae6e]) (user=bgeffon job=sendgmr) by 2002:a25:58c5:: with SMTP id m188mr6582856ybb.286.1616516784790; Tue, 23 Mar 2021 09:26:24 -0700 (PDT) Date: Tue, 23 Mar 2021 09:26:11 -0700 In-Reply-To: <20210323162611.2398613-1-bgeffon@google.com> Message-Id: <20210323162611.2398613-4-bgeffon@google.com> Mime-Version: 1.0 References: <20210303175235.3308220-1-bgeffon@google.com> <20210323162611.2398613-1-bgeffon@google.com> X-Mailer: git-send-email 2.31.0.rc2.261.g7f71774620-goog Subject: [PATCH] mremap.2: MREMAP_DONTUNMAP to reflect to supported mappings From: Brian Geffon To: Andrew Morton Cc: Axel Rasmussen , Lokesh Gidra , Mike Rapoport , Peter Xu , Hugh Dickins , "Michael S . Tsirkin" , Brian Geffon , 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 , Alejandro Colomar Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 -- 2.31.0.rc2.261.g7f71774620-goog 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=-26.3 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, USER_AGENT_GIT,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 BBDCBC433E0 for ; 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s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=XqDxfe4GGK69zvJtB/kYAUp+QZJt4kx+lv6J7Sr9tRs=; b=LF88FF8QbRlz035PfRgpaWsZw6EWleKLYccozqsFghVMBlSUyovtR5tUJcV4oxuz2S VgaIuUoLlzFhqkZcrWSs3JwBcQBZP2nmplCnOVLWCXe4CWHY6ffWG2CzelxPqdZK29x/ 04X/ey+RlKue7AukJ0oInebsxcTFoIhbxjr3HNw5717zOK50uAfCUv+eF1RcUwSx78K/ P3fhxGctgLHySF2F9XGI2/8PyA/QbYSSwJ/cXogjVyMTMLPLCDeGpTPMdC+cFk1N9pFs lNTRbFpUya/idX1F2Su72F6Hy4nebk94R3KttLAxkOb57Y2lSPMDui5nL+SYEOhhL10+ D1uw== X-Gm-Message-State: AOAM530fJUMtMryzqFR6ggyyPkxs18p2ghfOH+sMUvsotGFlAEWYfj6q uyQUWdUOgUi2jqL1XRlg68PS0HF2aOyT X-Google-Smtp-Source: ABdhPJyY6VFYJLcVfPwJqFGB/P8vkSlXhFXE+bJzCD7z0F2IHTQD7BmT8z01lHuh89TOcB3QZeNXivPGk6B0 X-Received: from bg.sfo.corp.google.com ([2620:15c:8:10:b5cc:cacb:2875:ae6e]) (user=bgeffon job=sendgmr) by 2002:a25:58c5:: with SMTP id m188mr6582856ybb.286.1616516784790; Tue, 23 Mar 2021 09:26:24 -0700 (PDT) Date: Tue, 23 Mar 2021 09:26:11 -0700 In-Reply-To: <20210323162611.2398613-1-bgeffon@google.com> Message-Id: <20210323162611.2398613-4-bgeffon@google.com> Mime-Version: 1.0 References: <20210303175235.3308220-1-bgeffon@google.com> <20210323162611.2398613-1-bgeffon@google.com> X-Mailer: git-send-email 2.31.0.rc2.261.g7f71774620-goog Subject: [PATCH] mremap.2: MREMAP_DONTUNMAP to reflect to supported mappings From: Brian Geffon To: Andrew Morton Cc: Axel Rasmussen , Lokesh Gidra , Mike Rapoport , Peter Xu , Hugh Dickins , "Michael S . Tsirkin" , Brian Geffon , 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 , Alejandro Colomar Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: 6w9kfcd76mcfjsdyzbxbiyh73kwfwfq4 X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 5DADDE0011CE Received-SPF: none (flex--bgeffon.bounces.google.com>: No applicable sender policy available) receiver=imf13; identity=mailfrom; envelope-from="<3sBZaYAcKCE8sxvww54x55x2v.t532z4BE-331Crt1.58x@flex--bgeffon.bounces.google.com>"; helo=mail-yb1-f201.google.com; client-ip=209.85.219.201 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1616516785-994857 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: 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 -- 2.31.0.rc2.261.g7f71774620-goog