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| author | Vernon Yang <yanglincheng@kylinos.cn> | 2026-02-07 16:16:13 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-04-05 13:53:02 -0700 |
| commit | 80a4bcac69348e32ccb5ab46401ac2a416fcb576 (patch) | |
| tree | 1b1d047c18ec84294def0f76bc65352e38a85634 | |
| parent | 15c578d0dc9952c634f59fcdf9f75be0e42ca834 (diff) | |
| download | linux-80a4bcac69348e32ccb5ab46401ac2a416fcb576.tar.gz linux-80a4bcac69348e32ccb5ab46401ac2a416fcb576.zip | |
mm: khugepaged: set to next mm direct when mm has MMF_DISABLE_THP_COMPLETELY
When an mm with the MMF_DISABLE_THP_COMPLETELY flag is detected during
scanning, directly set khugepaged_scan.mm_slot to the next mm_slot, reduce
redundant operation.
Without this patch, entering khugepaged_scan_mm_slot() next time, we will
set khugepaged_scan.mm_slot to the next mm_slot.
With this patch, we will directly set khugepaged_scan.mm_slot to the next
mm_slot.
Link: https://lkml.kernel.org/r/20260207081613.588598-6-vernon2gm@gmail.com
Signed-off-by: Vernon Yang <yanglincheng@kylinos.cn>
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Barry Song <baohua@kernel.org>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | mm/khugepaged.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 1dd3cfca610d..17ab58681032 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -2508,9 +2508,9 @@ breakouterloop_mmap_lock: VM_BUG_ON(khugepaged_scan.mm_slot != slot); /* * Release the current mm_slot if this mm is about to die, or - * if we scanned all vmas of this mm. + * if we scanned all vmas of this mm, or THP got disabled. */ - if (hpage_collapse_test_exit(mm) || !vma) { + if (hpage_collapse_test_exit_or_disable(mm) || !vma) { /* * Make sure that if mm_users is reaching zero while * khugepaged runs here, khugepaged_exit will find |