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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jul 2025 15:32:52.8773 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 99886a30-e701-427b-63fb-08ddc9fe308b X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: DU2PEPF0001E9BF.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR08MB9693 X-Rspamd-Queue-Id: DFCBA180012 X-Rspam-User: X-Rspamd-Server: rspam09 X-Stat-Signature: pa1xjue41obkcert13ggmuf88p7zurjq X-HE-Tag: 1753284779-108081 X-HE-Meta: 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 0L5PldLN 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 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 23/07/25 8:58 pm, Zi Yan wrote: > On 18 Jul 2025, at 5:02, Dev Jain wrote: > >> Patch 6 optimizes mprotect() by batch clearing the ptes, masking in the new > “Patch 6” might not make sense when reading it in the git log. Something like > below might be better: Andrew has fixed that for me :) > > mprotect() will be optimized by batch clearing the ptes, masking in the new > protections, and batch setting the ptes in an upcoming commit. > > No need to repin for this one. > >> protections, and batch setting the ptes. Suppose that the first pte >> of the batch is writable - with the current implementation of >> folio_pte_batch(), it is not guaranteed that the other ptes in the batch >> are already writable too, so we may incorrectly end up setting the >> writable bit on all ptes via modify_prot_commit_ptes(). >> >> Therefore, introduce FPB_RESPECT_WRITE so that all ptes in the batch >> are writable or not. >> >> Signed-off-by: Dev Jain >> --- >> mm/internal.h | 11 ++++++++--- >> 1 file changed, 8 insertions(+), 3 deletions(-) >> > LGTM. Reviewed-by: Zi Yan Thanks. > > Best Regards, > Yan, Zi