+ hugetlbfs-make-hugepage-size-conversion-more-readable.patch added to -mm tree

+ hugetlbfs-make-hugepage-size-conversion-more-readable.patch added to -mm tree

[akpm]

The patch titled
     Subject: hugetlbfs: make hugepage size conversion more readable
has been added to the -mm tree.  Its filename is
     hugetlbfs-make-hugepage-size-conversion-more-readable.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/hugetlbfs-make-hugepage-size-conversion-more-readable.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/hugetlbfs-make-hugepage-size-conversion-more-readable.patch

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------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: hugetlbfs: make hugepage size conversion more readable

The calculation 1U << (h->order + PAGE_SHIFT - 10) is actually equal to
(PAGE_SHIFT << (h->order)) >> 10.  So we can make it more readable by
replace it with huge_page_size(h) >> 10.

Link: https://lkml.kernel.org/r/20210122083141.24548-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/hugetlbfs/inode.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/fs/hugetlbfs/inode.c~hugetlbfs-make-hugepage-size-conversion-more-readable
+++ a/fs/hugetlbfs/inode.c
@@ -1513,8 +1513,8 @@ static struct vfsmount *__init mount_one
 		put_fs_context(fc);
 	}
 	if (IS_ERR(mnt))
-		pr_err("Cannot mount internal hugetlbfs for page size %uK",
-		       1U << (h->order + PAGE_SHIFT - 10));
+		pr_err("Cannot mount internal hugetlbfs for page size %luK",
+		       huge_page_size(h) >> 10);
 	return mnt;
 }
 
_

Patches currently in -mm which might be from linmiaohe@huawei.com are

mm-page_owner-use-helper-function-zone_end_pfn-to-get-end_pfn.patch
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-workingsetc-avoid-unnecessary-max_nodes-estimation-in-count_shadow_nodes.patch
z3fold-remove-unused-attribute-for-release_z3fold_page.patch
z3fold-simplify-the-zhdr-initialization-code-in-init_z3fold_page.patch
mm-compaction-remove-duplicated-vm_bug_on_page-pagelocked.patch
hugetlbfs-remove-useless-bug_oninode-in-hugetlbfs_setattr.patch
hugetlbfs-use-helper-macro-default_hstate-in-init_hugetlbfs_fs.patch
hugetlbfs-correct-obsolete-function-name-in-hugetlbfs_read_iter.patch
hugetlbfs-remove-meaningless-variable-avoid_reserve.patch
hugetlbfs-make-hugepage-size-conversion-more-readable.patch
mm-rmap-correct-some-obsolete-comments-of-anon_vma.patch
mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch