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page_alloc: use vmalloc_huge for large system hash 

Use vmalloc_huge() in alloc_large_system_hash() so that large system
hash (>= PMD_SIZE) could benefit from huge pages.

Note that vmalloc_huge only allocates huge pages for systems with
HAVE_ARCH_HUGE_VMALLOC.

Signed-off-by: Song Liu <song@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Rik van Riel <riel@surriel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Song Liu 2022-04-15 09:44:11 -07:00 committed by Linus Torvalds
parent 22da5264ab
commit f2edd118d0
1 changed files with 1 additions and 1 deletions
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2
mm/page_alloc.c
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@ -8919,7 +8919,7 @@ void *__init alloc_large_system_hash(const char *tablename,
table = memblock_alloc_raw(size,
SMP_CACHE_BYTES);
} else if (get_order(size) >= MAX_ORDER || hashdist) {
table = __vmalloc(size, gfp_flags);
table = vmalloc_huge(size, gfp_flags);
virt = true;
if (table)
huge = is_vm_area_hugepages(table);