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Miller" , Andreas Larsson , Jarkko Sakkinen , Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Alexander Viro , Christian Brauner , Jan Kara , Kees Cook , Peter Xu , David Hildenbrand , Zi Yan , Baolin Wang , "Liam R . Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Xu Xin , Chengming Zhou , Hugh Dickins , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Rik van Riel , Harry Yoo , Dan Williams , Matthew Wilcox , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Jason Gunthorpe , John Hubbard , Muchun Song , Jann Horn , Pedro Falcato , Johannes Weiner , Qi Zheng , Shakeel Butt , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, sparclinux@vger.kernel.org, linux-sgx@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, nvdimm@lists.linux.dev, linux-trace-kernel@vger.kernel.org Subject: Re: [PATCH 2/3] mm: update core kernel code to use vm_flags_t consistently Message-ID: References: X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spamd-Result: default: False [-8.30 / 50.00]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; MISSING_XM_UA(0.00)[]; MIME_TRACE(0.00)[0:+]; URIBL_BLOCKED(0.00)[localhost.localdomain:mid,imap1.dmz-prg2.suse.org:helo,suse.de:email,oracle.com:email]; TO_DN_SOME(0.00)[]; R_RATELIMIT(0.00)[to_ip_from(RLj6zumtikrrmnnbmzkety5zmd)]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; FREEMAIL_CC(0.00)[linux-foundation.org,armlinux.org.uk,arm.com,kernel.org,linux.ibm.com,ellerman.id.au,gmail.com,csgroup.eu,davemloft.net,gaisler.com,linux.intel.com,linutronix.de,redhat.com,alien8.de,zytor.com,infradead.org,zeniv.linux.org.uk,suse.cz,nvidia.com,linux.alibaba.com,oracle.com,zte.com.cn,linux.dev,google.com,suse.com,surriel.com,intel.com,goodmis.org,efficios.com,ziepe.ca,suse.de,cmpxchg.org,bytedance.com,lists.infradead.org,vger.kernel.org,lists.ozlabs.org,kvack.org,lists.linux.dev]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; RCPT_COUNT_GT_50(0.00)[64]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:email,oracle.com:email] On Wed, Jun 18, 2025 at 08:42:53PM +0100, Lorenzo Stoakes wrote: > The core kernel code is currently very inconsistent in its use of > vm_flags_t vs. unsigned long. This prevents us from changing the type of > vm_flags_t in the future and is simply not correct, so correct this. > > While this results in rather a lot of churn, it is a critical pre-requisite > for a future planned change to VMA flag type. > > Additionally, update VMA userland tests to account for the changes. > > To make review easier and to break things into smaller parts, driver and > architecture-specific changes is left for a subsequent commit. > > The code has been adjusted to cascade the changes across all calling code > as far as is needed. > > We will adjust architecture-specific and driver code in a subsequent patch. > > Overall, this patch does not introduce any functional change. > > Signed-off-by: Lorenzo Stoakes Acked-by: Oscar Salvador Heh, for one second I thought this was about to convert vm_fault->flags to the actual enum fault_flag (which wouldn't be bad if you ask me, because "unsigned int flags" is not very descriptive). But this is quite good as well, brings in some consistency. -- Oscar Salvador SUSE Labs