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Thu, 19 Jun 2025 11:48:34 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id iWtSFxL5U2g4cQAAD6G6ig (envelope-from ); Thu, 19 Jun 2025 11:48:34 +0000 Message-ID: <4735002d-3254-41a2-8a3a-5597afcdc6e6@suse.cz> Date: Thu, 19 Jun 2025 13:48:34 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/3] mm: update core kernel code to use vm_flags_t consistently Content-Language: en-US To: Lorenzo Stoakes , Andrew Morton Cc: Russell King , Catalin Marinas , Will Deacon , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , "David S . 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 , 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 , Oscar Salvador , 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 References: From: Vlastimil Babka Autocrypt: addr=vbabka@suse.cz; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSBWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBzdXNlLmN6PsLBlAQTAQoAPgIbAwULCQgHAwUVCgkICwUWAgMBAAIe AQIXgBYhBKlA1DSZLC6OmRA9UCJPp+fMgqZkBQJnyBr8BQka0IFQAAoJECJPp+fMgqZkqmMQ AIbGN95ptUMUvo6aAdhxaOCHXp1DfIBuIOK/zpx8ylY4pOwu3GRe4dQ8u4XS9gaZ96Gj4bC+ jwWcSmn+TjtKW3rH1dRKopvC07tSJIGGVyw7ieV/5cbFffA8NL0ILowzVg8w1ipnz1VTkWDr 2zcfslxJsJ6vhXw5/npcY0ldeC1E8f6UUoa4eyoskd70vO0wOAoGd02ZkJoox3F5ODM0kjHu Y97VLOa3GG66lh+ZEelVZEujHfKceCw9G3PMvEzyLFbXvSOigZQMdKzQ8D/OChwqig8wFBmV QCPS4yDdmZP3oeDHRjJ9jvMUKoYODiNKsl2F+xXwyRM2qoKRqFlhCn4usVd1+wmv9iLV8nPs 2Db1ZIa49fJet3Sk3PN4bV1rAPuWvtbuTBN39Q/6MgkLTYHb84HyFKw14Rqe5YorrBLbF3rl M51Dpf6Egu1yTJDHCTEwePWug4XI11FT8lK0LNnHNpbhTCYRjX73iWOnFraJNcURld1jL1nV r/LRD+/e2gNtSTPK0Qkon6HcOBZnxRoqtazTU6YQRmGlT0v+rukj/cn5sToYibWLn+RoV1CE Qj6tApOiHBkpEsCzHGu+iDQ1WT0Idtdynst738f/uCeCMkdRu4WMZjteQaqvARFwCy3P/jpK uvzMtves5HvZw33ZwOtMCgbpce00DaET4y/UzsBNBFsZNTUBCACfQfpSsWJZyi+SHoRdVyX5 J6rI7okc4+b571a7RXD5UhS9dlVRVVAtrU9ANSLqPTQKGVxHrqD39XSw8hxK61pw8p90pg4G /N3iuWEvyt+t0SxDDkClnGsDyRhlUyEWYFEoBrrCizbmahOUwqkJbNMfzj5Y7n7OIJOxNRkB IBOjPdF26dMP69BwePQao1M8Acrrex9sAHYjQGyVmReRjVEtv9iG4DoTsnIR3amKVk6si4Ea X/mrapJqSCcBUVYUFH8M7bsm4CSxier5ofy8jTEa/CfvkqpKThTMCQPNZKY7hke5qEq1CBk2 wxhX48ZrJEFf1v3NuV3OimgsF2odzieNABEBAAHCwXwEGAEKACYCGwwWIQSpQNQ0mSwujpkQ PVAiT6fnzIKmZAUCZ8gcVAUJFhTonwAKCRAiT6fnzIKmZLY8D/9uo3Ut9yi2YCuASWxr7QQZ lJCViArjymbxYB5NdOeC50/0gnhK4pgdHlE2MdwF6o34x7TPFGpjNFvycZqccSQPJ/gibwNA zx3q9vJT4Vw+YbiyS53iSBLXMweeVV1Jd9IjAoL+EqB0cbxoFXvnjkvP1foiiF5r73jCd4PR rD+GoX5BZ7AZmFYmuJYBm28STM2NA6LhT0X+2su16f/HtummENKcMwom0hNu3MBNPUOrujtW khQrWcJNAAsy4yMoJ2Lw51T/5X5Hc7jQ9da9fyqu+phqlVtn70qpPvgWy4HRhr25fCAEXZDp xG4RNmTm+pqorHOqhBkI7wA7P/nyPo7ZEc3L+ZkQ37u0nlOyrjbNUniPGxPxv1imVq8IyycG AN5FaFxtiELK22gvudghLJaDiRBhn8/AhXc642/Z/yIpizE2xG4KU4AXzb6C+o7LX/WmmsWP Ly6jamSg6tvrdo4/e87lUedEqCtrp2o1xpn5zongf6cQkaLZKQcBQnPmgHO5OG8+50u88D9I rywqgzTUhHFKKF6/9L/lYtrNcHU8Z6Y4Ju/MLUiNYkmtrGIMnkjKCiRqlRrZE/v5YFHbayRD dJKXobXTtCBYpLJM4ZYRpGZXne/FAtWNe4KbNJJqxMvrTOrnIatPj8NhBVI0RSJRsbilh6TE m6M14QORSWTLRg== In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: B0ADE40007 X-Rspamd-Server: rspam10 X-Stat-Signature: qf7efw36x4agkswjh5mzon146pfq31pi X-HE-Tag: 1750333716-359144 X-HE-Meta: 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 pLhh5Wog 4wLA+6hj+kIMmDotBaX6fJ8mGLNCsDd7B0clvW33r38WNoNHePVD+Wrmo/4q7yd29OgHj+mTomXq5la8hgF1o8RVFKtz3vlxt3Zq/zDY9BQS9xO6ARvmWN/1u36ALm29d1xQo+ncfbbCw5pmMTJ4e3+l+fP3Db6Qra0qsbFMSd3/uQbTyUpneMqg0U3dK7lC99tHE6+ZYaUZvPK0ydYGIebhUz7hmAvnj/Q2iZ9y68jIs9RJbM5i5bYVtx+PlimeKtZLDjqY0g54RLemcRmlYf2XI6OJ4NbBfHWQ5msEi/bfB1JudVZ9v1v/zLxsuPcVy36lWDvas/N6fwTkT2W7ivVIQeFuI03/9mWIQw6oMLqNoQ1U= 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: List-Subscribe: List-Unsubscribe: On 6/18/25 21:42, 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. Nit: this line is redundant with 2 paragraphs above. > Overall, this patch does not introduce any functional change. > > Signed-off-by: Lorenzo Stoakes Reviewed-by: Vlastimil Babka