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mm: sparsemem: move vmemmap related to HugeTLB to CONFIG_HUGETLB_PAGE_FREE_VMEMMAP

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The vmemmap_remap_free/alloc are relevant to HugeTLB, so move those
functiongs to the scope of CONFIG_HUGETLB_PAGE_FREE_VMEMMAP.

Link: https://lkml.kernel.org/r/20211101031651.75851-6-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Cc: Bodeddula Balasubramaniam <bodeddub@amazon.com>
Cc: Chen Huang <chenhuang5@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Fam Zheng <fam.zheng@bytedance.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Muchun Song 2022-03-22 14:45:12 -07:00 committed by Linus Torvalds
parent b147c89cd4
commit e540841734
2 changed files with 4 additions and 0 deletions
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2
include/linux/mm.h
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@ -3146,10 +3146,12 @@ static inline void print_vma_addr(char *prefix, unsigned long rip)
}
#endif
#ifdef CONFIG_HUGETLB_PAGE_FREE_VMEMMAP
int vmemmap_remap_free(unsigned long start, unsigned long end,
unsigned long reuse);
int vmemmap_remap_alloc(unsigned long start, unsigned long end,
unsigned long reuse, gfp_t gfp_mask);
#endif
void *sparse_buffer_alloc(unsigned long size);
struct page * __populate_section_memmap(unsigned long pfn,

2
mm/sparse-vmemmap.c
View File

@ -34,6 +34,7 @@
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#ifdef CONFIG_HUGETLB_PAGE_FREE_VMEMMAP
/**
* struct vmemmap_remap_walk - walk vmemmap page table
*
@ -419,6 +420,7 @@ int vmemmap_remap_alloc(unsigned long start, unsigned long end,
return 0;
}
#endif /* CONFIG_HUGETLB_PAGE_FREE_VMEMMAP */
/*
* Allocate a block of memory to be used to back the virtual memory map