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| author | Nico Pache <npache@redhat.com> | 2026-05-26 07:47:42 -0600 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-05-28 21:31:37 -0700 |
| commit | 23e21ddb9b47b66b93c195d85d1d2b9623a52936 (patch) | |
| tree | ccbecc5ee925ff14d352e1923ce0cf5b6268ec68 /Documentation | |
| parent | aff27f3bb0abd340bd8eb504f67bd9fec4d1ea95 (diff) | |
| download | linux-next-history-23e21ddb9b47b66b93c195d85d1d2b9623a52936.tar.gz | |
add back note and edit doc about khugepaged limits
Link: https://lore.kernel.org/b457f6e9-ae12-4e1f-8484-f3043ca62276@redhat.com
Signed-off-by: Nico Pache <npache@redhat.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Liam R. Howlett" <liam@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Lance Yang <lance.yang@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/mm/transhuge.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst index aaf12cfb8f714..23f8d13c2629d 100644 --- a/Documentation/admin-guide/mm/transhuge.rst +++ b/Documentation/admin-guide/mm/transhuge.rst @@ -265,6 +265,11 @@ support the following arguments:: Khugepaged controls ------------------- +.. note:: + khugepaged currently only searches for opportunities to collapse file/shmem + to PMD-sized THP. Only anonymous memory will attempt to collapse to other THP + sizes. + khugepaged runs usually at low frequency so while one may not want to invoke defrag algorithms synchronously during the page faults, it should be worth invoking defrag at least in khugepaged. However it's |