[169/173] hugetlbfs: make hugepage size conversion more readable

Commit Message

Andrew Morton Feb. 24, 2021, 8:10 p.m. UTC

From: Miaohe Lin <[e-mail]>
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/[e-mail]
Signed-off-by: Miaohe Lin <[e-mail]>
Reviewed-by: Mike Kravetz <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

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

Patch

--- a/fs/hugetlbfs/inode.c~hugetlbfs-make-hugepage-size-conversion-more-readable
+++ a/fs/hugetlbfs/inode.c
@@ -1520,8 +1520,8 @@  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;
 }