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| 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 /mm/hugetlb_vmemmap.c | |
| parent | cf5472e561133888df81d2e48f7da9ebd3299459 (diff) | |
| download | lwn-dff033818a06e7d0bf79271e34bda11c2d9d98d0.tar.gz lwn-dff033818a06e7d0bf79271e34bda11c2d9d98d0.zip | |
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 'mm/hugetlb_vmemmap.c')
| -rw-r--r-- | mm/hugetlb_vmemmap.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c index e5b83a25c2fa..bcafd9d7639c 100644 --- a/mm/hugetlb_vmemmap.c +++ b/mm/hugetlb_vmemmap.c @@ -1,8 +1,8 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Optimize vmemmap pages associated with HugeTLB + * HugeTLB Vmemmap Optimization (HVO) * - * Copyright (c) 2020, Bytedance. All rights reserved. + * Copyright (c) 2020, ByteDance. All rights reserved. * * Author: Muchun Song <songmuchun@bytedance.com> * @@ -156,8 +156,8 @@ void __init hugetlb_vmemmap_init(struct hstate *h) /* * There are only (RESERVE_VMEMMAP_SIZE / sizeof(struct page)) struct - * page structs that can be used when CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP, - * so add a BUILD_BUG_ON to catch invalid usage of the tail struct page. + * page structs that can be used when HVO is enabled, add a BUILD_BUG_ON + * to catch invalid usage of the tail page structs. */ BUILD_BUG_ON(__NR_USED_SUBPAGE >= RESERVE_VMEMMAP_SIZE / sizeof(struct page)); |