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| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2022-11-25 04:45:02 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-12-01 00:59:07 +0100 |
| commit | 7e25de77bc5ea56cc3ff618fc8f4ea1896a4dbb3 (patch) | |
| tree | 4f0fcd97e2f2415a99a19887d74798c6694bd738 /arch/s390 | |
| parent | mm/thp: rename pmd_to_page() as pmd_pgtable_page() (diff) | |
| download | linux-7e25de77bc5ea56cc3ff618fc8f4ea1896a4dbb3.tar.xz linux-7e25de77bc5ea56cc3ff618fc8f4ea1896a4dbb3.zip | |
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.c | 5 |
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; } |