The patch titled
Subject: mm/hugetlb: use helper huge_page_order and pages_per_huge_page
has been added to the -mm tree. Its filename is
mm-hugetlb-use-helper-huge_page_order-and-pages_per_huge_page.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-use-helper-huge_page_order-and-pages_per_huge_page.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-use-helper-huge_page_order-and-pages_per_huge_page.patch
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------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: mm/hugetlb: use helper huge_page_order and pages_per_huge_page
Since commit a5516438959d ("hugetlb: modular state for hugetlb page
size"), we can use huge_page_order to access hstate->order and
pages_per_huge_page to fetch the pages per huge page. But
gather_bootmem_prealloc() forgot to use it.
Link: https://lkml.kernel.org/r/20210114114435.40075-1-linmiaohe@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/hugetlb.c~mm-hugetlb-use-helper-huge_page_order-and-pages_per_huge_page
+++ a/mm/hugetlb.c
@@ -2473,7 +2473,7 @@ static void __init gather_bootmem_preall
struct hstate *h = m->hstate;
WARN_ON(page_count(page) != 1);
- prep_compound_huge_page(page, h->order);
+ prep_compound_huge_page(page, huge_page_order(h));
WARN_ON(PageReserved(page));
prep_new_huge_page(h, page, page_to_nid(page));
put_page(page); /* free it into the hugepage allocator */
@@ -2485,7 +2485,7 @@ static void __init gather_bootmem_preall
* side-effects, like CommitLimit going negative.
*/
if (hstate_is_gigantic(h))
- adjust_managed_page_count(page, 1 << h->order);
+ adjust_managed_page_count(page, pages_per_huge_page(h));
cond_resched();
}
}
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-hugetlb-fix-potential-double-free-in-hugetlb_register_node-error-path.patch
mm-hugetlb-avoid-unnecessary-hugetlb_acct_memory-call.patch
mm-hugetlb-use-helper-huge_page_order-and-pages_per_huge_page.patch
mm-compaction-remove-duplicated-vm_bug_on_page-pagelocked.patch
mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch
