The quilt patch titled Subject: mm-ksm-document-smart-scan-mode-fix has been removed from the -mm tree. Its filename was mm-ksm-document-smart-scan-mode-fix-2.patch This patch was dropped because it was folded into mm-ksm-document-smart-scan-mode.patch ------------------------------------------------------ From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Subject: mm-ksm-document-smart-scan-mode-fix Date: Tue Sep 26 05:48:29 PM PDT 2023 document that smart_scan defaults to on Cc: David Hildenbrand <david@xxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxxx> Cc: Stefan Roesch <shr@xxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/admin-guide/mm/ksm.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/Documentation/admin-guide/mm/ksm.rst~mm-ksm-document-smart-scan-mode-fix-2 +++ a/Documentation/admin-guide/mm/ksm.rst @@ -156,12 +156,12 @@ stable_node_chains_prune_millisecs ``max_page_sharing`` yet. smart_scan - By default KSM checks every candidate page for each scan. It does - not take into account historic information. When smart scan is + Historically KSM checked every candidate page for each scan. It did + not take into account historic information. When smart scan is enabled, pages that have previously not been de-duplicated get skipped. How often these pages are skipped depends on how often de-duplication has already been tried and failed. By default this - optimization is disabled. The ``pages_skipped`` metric shows how + optimization is enabled. The ``pages_skipped`` metric shows how effective the setting is. The effectiveness of KSM and MADV_MERGEABLE is shown in ``/sys/kernel/mm/ksm/``: _ Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are mm-shmem-fix-race-in-shmem_undo_range-w-thp-fix.patch mm-ksm-document-smart-scan-mode.patch fs-proc-task_mmu-implement-ioctl-to-get-and-optionally-clear-info-about-ptes-fix.patch fs-proc-task_mmu-implement-ioctl-to-get-and-optionally-clear-info-about-ptes-fix-fix.patch fs-proc-task_mmu-implement-ioctl-to-get-and-optionally-clear-info-about-ptes-fix-2.patch mm-kmem-scoped-objcg-protection-checkpatch-fixes.patch