s390/mm: use pmd_pgtable_page() helper in __gmap_segment_gaddr()

[linux-block.git] / arch / s390 / mm / gmap.c

diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c
index 02d15c8dc92e994692f2322cf3232f85a032f76a..8947451ae0210f35b7a584e4c3c7854972b95d88 100644 (file)
--- a/arch/s390/mm/gmap.c
+++ b/arch/s390/mm/gmap.c
@@ -336,12 +336,11 @@ static int gmap_alloc_table(struct gmap *gmap, unsigned long *table,
 static unsigned long __gmap_segment_gaddr(unsigned long *entry)
 {
        struct page *page;
-       unsigned long offset, mask;
+       unsigned long offset;
 
        offset = (unsigned long) entry / sizeof(unsigned long);
        offset = (offset & (PTRS_PER_PMD - 1)) * PMD_SIZE;
-       mask = ~(PTRS_PER_PMD * sizeof(pmd_t) - 1);
-       page = virt_to_page((void *)((unsigned long) entry & mask));
+       page = pmd_pgtable_page((pmd_t *) entry);
        return page->index + offset;
 }