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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Aug 2025 07:35:35.4002 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fd41c7b0-92f5-4e8b-97e6-08dde14e7bb3 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: DB5PEPF00014B99.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS2PR08MB8926 On 22/08/25 12:03 pm, Wei Yang wrote: > Commit 8ee53820edfd ("thp: mmu_notifier_test_young") introduced > mmu_notifier_test_young(), but we should pass the address need to test. > In xxx_scan_pmd(), the actual iteration address is "_address" not > "address". We seem to misuse the variable on the very beginning. > > Change it to the right one. > > Fixes: 8ee53820edfd ("thp: mmu_notifier_test_young") > Signed-off-by: Wei Yang > Cc: David Hildenbrand > Cc: Lorenzo Stoakes > Cc: Zi Yan > Cc: Baolin Wang > Cc: Liam R. Howlett > Cc: Nico Pache > Cc: Ryan Roberts > Cc: Dev Jain > Cc: Barry Song > CC: > > --- > The original commit 8ee53820edfd is at 2011. > Then the code is moved to khugepaged.c in commit b46e756f5e470 ("thp: > extract khugepaged from mm/huge_memory.c") in 2022. > --- > mm/khugepaged.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/khugepaged.c b/mm/khugepaged.c > index 24e18a7f8a93..b000942250d1 100644 > --- a/mm/khugepaged.c > +++ b/mm/khugepaged.c > @@ -1418,7 +1418,7 @@ static int hpage_collapse_scan_pmd(struct mm_struct= *mm, > if (cc->is_khugepaged && > (pte_young(pteval) || folio_test_young(folio) || > folio_test_referenced(folio) || mmu_notifier_test_youn= g(vma->vm_mm, > - addres= s))) > + _addre= ss))) > referenced++; > } > if (!writable) { Wow, I have gone through this code so many times and never noticed this. Reviewed-by: Dev Jain IMPORTANT NOTICE: The contents of this email and any attachments are confid= ential and may also be privileged. If you are not the intended recipient, p= lease notify the sender immediately and do not disclose the contents to any= other person, use it for any purpose, or store or copy the information in = any medium. Thank you.