mm/hugetlb.c: make is_hugetlb_entry_hwpoisoned return bool

Patch series "mm/hugetlb: Small cleanup and improvement", v2.

This patch (of 3):

Just like its neighbour is_hugetlb_entry_migration() has done.
Signed-off-by: NBaoquan He <bhe@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Reviewed-by: NMike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: NDavid Hildenbrand <david@redhat.com>
Reviewed-by: NAnshuman Khandual <anshuman.khandual@arm.com>
Link: https://lkml.kernel.org/r/20200723032248.24772-1-bhe@redhat.com
Link: https://lkml.kernel.org/r/20200723032248.24772-2-bhe@redhat.comSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/hugetlb.c

@@ -3805,17 +3805,17 @@ bool is_hugetlb_entry_migration(pte_t pte)
 		return false;
 }
 
-static int is_hugetlb_entry_hwpoisoned(pte_t pte)
+static bool is_hugetlb_entry_hwpoisoned(pte_t pte)
 {
 	swp_entry_t swp;
 
 	if (huge_pte_none(pte) || pte_present(pte))
-		return 0;
+		return false;
 	swp = pte_to_swp_entry(pte);
 	if (non_swap_entry(swp) && is_hwpoison_entry(swp))
-		return 1;
+		return true;
 	else
-		return 0;
+		return false;
 }
 
 int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,