diff options
| author | Muchun Song <songmuchun@bytedance.com> | 2022-06-28 17:22:30 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-08-08 18:06:42 -0700 |
| commit | dff033818a06e7d0bf79271e34bda11c2d9d98d0 (patch) | |
| tree | c4eaf7a87d3f4b6a9fe321e315482139732c16b4 /Documentation/admin-guide/mm/memory-hotplug.rst | |
| parent | cf5472e561133888df81d2e48f7da9ebd3299459 (diff) | |
| download | linux-dff033818a06e7d0bf79271e34bda11c2d9d98d0.tar.bz2 | |
mm: hugetlb_vmemmap: introduce the name HVO
It it inconvenient to mention the feature of optimizing vmemmap pages
associated with HugeTLB pages when communicating with others since there
is no specific or abbreviated name for it when it is first introduced.
Let us give it a name HVO (HugeTLB Vmemmap Optimization) from now.
This commit also updates the document about "hugetlb_free_vmemmap" by the
way discussed in thread [1].
Link: https://lore.kernel.org/all/21aae898-d54d-cc4b-a11f-1bb7fddcfffa@redhat.com/ [1]
Link: https://lkml.kernel.org/r/20220628092235.91270-4-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Will Deacon <will@kernel.org>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide/mm/memory-hotplug.rst')
| -rw-r--r-- | Documentation/admin-guide/mm/memory-hotplug.rst | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/admin-guide/mm/memory-hotplug.rst b/Documentation/admin-guide/mm/memory-hotplug.rst index 0f56ecd8ac05..a3c9e8ad8fa0 100644 --- a/Documentation/admin-guide/mm/memory-hotplug.rst +++ b/Documentation/admin-guide/mm/memory-hotplug.rst @@ -653,8 +653,8 @@ block might fail: - Concurrent activity that operates on the same physical memory area, such as allocating gigantic pages, can result in temporary offlining failures. -- Out of memory when dissolving huge pages, especially when freeing unused - vmemmap pages associated with each hugetlb page is enabled. +- Out of memory when dissolving huge pages, especially when HugeTLB Vmemmap + Optimization (HVO) is enabled. Offlining code may be able to migrate huge page contents, but may not be able to dissolve the source huge page because it fails allocating (unmovable) pages |