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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Aug 2023 06:07:15.5675 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1a883003-66ec-4275-4e56-08dba85631a0 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: SN1PEPF00026368.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9205 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" otherwise VMA's access pid clearing could get deferred for a long time when tasks return without scanning. Suggested-by: Mel Gorman Signed-off-by: Raghavendra K T --- kernel/sched/fair.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index b3e25be58e2b..2f2e1568c1d4 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3068,14 +3068,7 @@ static void task_numa_work(struct callback_head *wor= k) vma->numab_state->next_scan)) continue; =20 - /* Do not scan the VMA if task has not accessed */ - if (!vma_is_accessed(vma)) - continue; - - /* - * RESET access PIDs regularly for old VMAs. Resetting after checking - * vma for recent access to avoid clearing PID info before access.. - */ + /* RESET access PIDs regularly for old VMAs. */ if (mm->numa_scan_seq && time_after(jiffies, vma->numab_state->next_pid_reset)) { vma->numab_state->next_pid_reset =3D vma->numab_state->next_pid_reset + @@ -3084,6 +3077,10 @@ static void task_numa_work(struct callback_head *wor= k) vma->numab_state->access_pids[1] =3D 0; } =20 + /* Do not scan the VMA if task has not accessed */ + if (!vma_is_accessed(vma)) + continue; + do { start =3D max(start, vma->vm_start); end =3D ALIGN(start + (pages << PAGE_SHIFT), HPAGE_SIZE); --=20 2.34.1