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-rw-r--r--mm/hugetlb.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index cbc25826c9b0..ba6d39b71cb1 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -968,9 +968,14 @@ pgoff_t linear_hugepage_index(struct vm_area_struct *vma,
}
EXPORT_SYMBOL_GPL(linear_hugepage_index);
-/*
- * Return the size of the pages allocated when backing a VMA. In the majority
- * cases this will be same size as used by the page table entries.
+/**
+ * vma_kernel_pagesize - Page size granularity for this VMA.
+ * @vma: The user mapping.
+ *
+ * Folios in this VMA will be aligned to, and at least the size of the
+ * number of bytes returned by this function.
+ *
+ * Return: The default size of the folios allocated when backing a VMA.
*/
unsigned long vma_kernel_pagesize(struct vm_area_struct *vma)
{