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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jun 2025 05:28:12.6243 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f41d2a4b-43a3-4e47-6562-08dda8a8c27a X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EE36.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7176 Content-Type: text/plain; charset="utf-8" Replace open-coded folio reference count calculations with the folio_expected_ref_count(). No functional changes intended. Acked-by: David Hildenbrand Signed-off-by: Shivank Garg Reviewed-by: Oscar Salvador --- Changes from V1: - https://lore.kernel.org/linux-mm/20250609170806.447302-2-shivankg@amd.com - remove extra comments - drop RFC tag --- kernel/events/uprobes.c | 3 +-- mm/memfd.c | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 4c965ba77f9f..8a601df87072 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -436,8 +436,7 @@ static int __uprobe_write_opcode(struct vm_area_struct = *vma, * there are no unexpected folio references ... */ if (is_register || userfaultfd_missing(vma) || - (folio_ref_count(folio) !=3D folio_mapcount(folio) + 1 + - folio_test_swapcache(folio) * folio_nr_pages(folio))) + (folio_ref_count(folio) !=3D folio_expected_ref_count(folio) + 1)) goto remap; =20 /* diff --git a/mm/memfd.c b/mm/memfd.c index ab367e61553d..4db1fd2959aa 100644 --- a/mm/memfd.c +++ b/mm/memfd.c @@ -32,8 +32,7 @@ =20 static bool memfd_folio_has_extra_refs(struct folio *folio) { - return folio_ref_count(folio) - folio_mapcount(folio) !=3D - folio_nr_pages(folio); + return folio_ref_count(folio) !=3D folio_expected_ref_count(folio); } =20 static void memfd_tag_pins(struct xa_state *xas) --=20 2.43.0