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authorMatthew Wilcox (Oracle) <willy@infradead.org>2020-08-15 03:30:33 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-15 05:56:56 +0300
commitaf3bbc12df80e8c279b94c752b6edca29841f4f5 (patch)
tree5e69277956e96fe4ccce71613db1f66dd13b1441 /mm/internal.h
parent6ffbb45826f5d9ae09aa60cd88594b7816c96190 (diff)
downloadlinux-af3bbc12df80e8c279b94c752b6edca29841f4f5.tar.xz
mm: add thp_size
This function returns the number of bytes in a THP. It is like page_size(), but compiles to just PAGE_SIZE if CONFIG_TRANSPARENT_HUGEPAGE is disabled. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-5-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
-rw-r--r--mm/internal.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/internal.h b/mm/internal.h
index d11a9a8d2135..912bb1a1c10e 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -396,7 +396,7 @@ vma_address(struct page *page, struct vm_area_struct *vma)
unsigned long start, end;
start = __vma_address(page, vma);
- end = start + PAGE_SIZE * (hpage_nr_pages(page) - 1);
+ end = start + thp_size(page) - PAGE_SIZE;
/* page should be within @vma mapping range */
VM_BUG_ON_VMA(end < vma->vm_start || start >= vma->vm_end, vma);