From 72801513b2bfb6bf571956a604d38f98ce9aacd9 Mon Sep 17 00:00:00 2001 From: Baolin Wang Date: Fri, 5 Apr 2024 20:24:16 +0800 Subject: mm: set pageblock_order to HPAGE_PMD_ORDER in case with !CONFIG_HUGETLB_PAGE but THP enabled As Vlastimil suggested in previous discussion[1], it doesn't make sense to set pageblock_order as MAX_PAGE_ORDER when hugetlbfs is not enabled and THP is enabled. Instead, it should be set to HPAGE_PMD_ORDER. [1] https://lore.kernel.org/all/76457ec5-d789-449b-b8ca-dcb6ceb12445@suse.cz/ Link: https://lkml.kernel.org/r/3d57d253070035bdc0f6d6e5681ce1ed0e1934f7.1712286863.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang Suggested-by: Vlastimil Babka Acked-by: Vlastimil Babka Reviewed-by: Zi Yan Acked-by: David Hildenbrand Cc: Mel Gorman Signed-off-by: Andrew Morton --- include/linux/pageblock-flags.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pageblock-flags.h b/include/linux/pageblock-flags.h index 3f2409b968ec..547e82cdc89a 100644 --- a/include/linux/pageblock-flags.h +++ b/include/linux/pageblock-flags.h @@ -28,7 +28,7 @@ enum pageblock_bits { NR_PAGEBLOCK_BITS }; -#ifdef CONFIG_HUGETLB_PAGE +#if defined(CONFIG_HUGETLB_PAGE) #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE @@ -45,7 +45,11 @@ extern unsigned int pageblock_order; #endif /* CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */ -#else /* CONFIG_HUGETLB_PAGE */ +#elif defined(CONFIG_TRANSPARENT_HUGEPAGE) + +#define pageblock_order min_t(unsigned int, HPAGE_PMD_ORDER, MAX_PAGE_ORDER) + +#else /* CONFIG_TRANSPARENT_HUGEPAGE */ /* If huge pages are not used, group by MAX_ORDER_NR_PAGES */ #define pageblock_order MAX_PAGE_ORDER -- cgit v1.2.3