From: Liu Shixin <liushixin2@huawei.com> hulk inclusion category: bugfix bugzilla: 187198, https://gitee.com/openeuler/kernel/issues/I5GVFO CVE: NA -------------------------------- Will disable hugetlb_vmemmap when dynamic hugetlb is enabled in later patch. This reverts commit c7ae7c0dd37aa112f9cb3e23878f4c5fe67f86bc. Signed-off-by: Liu Shixin <liushixin2@huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- mm/dynamic_hugetlb.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/mm/dynamic_hugetlb.c b/mm/dynamic_hugetlb.c index eb9b528b73de..f8ebc8ab7d60 100644 --- a/mm/dynamic_hugetlb.c +++ b/mm/dynamic_hugetlb.c @@ -1133,17 +1133,6 @@ void __init dynamic_hugetlb_init(void) if (!enable_dhugetlb) return; - /* - * The dynamic_hugetlb feature need to split and merge pages frequently. - * hugetlb_vmemmap will affects the perforemance of page split and merge. - * If want to use dynamic hugetlb, please disable hugetlb_vmemmap. - */ - if (hugetlb_free_vmemmap_enabled) { - enable_dhugetlb = false; - pr_info("Please set hugetlb_free_vmemmap=off if want to enable dynamic hugetlb\n"); - return; - } - count = max(hugepage_index(max_pfn), (unsigned long)DEFAULT_PAGELIST_COUNT); size = sizeof(struct dhugetlb_pagelist) + count * sizeof(struct dhugetlb_pool *); dhugetlb_pagelist_t = kzalloc(size, GFP_KERNEL); -- 2.20.1