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authorAnshuman Khandual <anshuman.khandual@arm.com>2022-11-25 06:45:02 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-12-01 02:59:07 +0300
commit7e25de77bc5ea56cc3ff618fc8f4ea1896a4dbb3 (patch)
tree4f0fcd97e2f2415a99a19887d74798c6694bd738 /arch/s390
parent373dfda2bac1173971099dc76254a016646f62ab (diff)
downloadlinux-7e25de77bc5ea56cc3ff618fc8f4ea1896a4dbb3.tar.xz
s390/mm: use pmd_pgtable_page() helper in __gmap_segment_gaddr()
In __gmap_segment_gaddr() pmd level page table page is being extracted from the pmd pointer, similar to pmd_pgtable_page() implementation. This reduces some redundancy by directly using pmd_pgtable_page() instead, though first making it available. Link: https://lkml.kernel.org/r/20221125034502.1559986-1-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: David Hildenbrand <david@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/mm/gmap.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c
index 02d15c8dc92e..8947451ae021 100644
--- 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;
}