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Shutemov" To: Yu-cheng Yu Cc: x86@kernel.org, "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , Vedvyas Shanbhogue , Dave Martin , Weijiang Yang , Pengfei Xu , Haitao Huang , Peter Collingbourne , Andrew Morton Subject: Re: [PATCH v25 21/30] mm: Re-introduce vm_flags to do_mmap() Message-ID: <20210423103114.3hheurux4ixccrwv@box.shutemov.name> References: <20210415221419.31835-1-yu-cheng.yu@intel.com> <20210415221419.31835-22-yu-cheng.yu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210415221419.31835-22-yu-cheng.yu@intel.com> X-Rspamd-Queue-Id: C5FE05001531 X-Stat-Signature: rysbqat6y57gr3dkb5sdkgerxh6f58x3 X-Rspamd-Server: rspam02 Received-SPF: none (shutemov.name>: No applicable sender policy available) receiver=imf01; identity=mailfrom; envelope-from=""; helo=mail-lf1-f44.google.com; client-ip=209.85.167.44 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1619173871-917736 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, Apr 15, 2021 at 03:14:10PM -0700, Yu-cheng Yu wrote: > There was no more caller passing vm_flags to do_mmap(), and vm_flags was > removed from the function's input by: > > commit 45e55300f114 ("mm: remove unnecessary wrapper function do_mmap_pgoff()"). > > There is a new user now. Shadow stack allocation passes VM_SHADOW_STACK to > do_mmap(). Thus, re-introduce vm_flags to do_mmap(). > > Signed-off-by: Yu-cheng Yu > Reviewed-by: Peter Collingbourne > Reviewed-by: Kees Cook > Cc: Andrew Morton > Cc: Oleg Nesterov > Cc: linux-mm@kvack.org Reviewed-by: Kirill A. Shutemov -- Kirill A. Shutemov