summaryrefslogtreecommitdiff
path: root/arch/s390/mm
diff options
context:
space:
mode:
authorGerald Schaefer <gerald.schaefer@linux.ibm.com>2022-09-12 06:26:01 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-09-12 06:26:01 +0300
commit1a6baaa0db733c0dca2e170ca1df2b09834f47ce (patch)
treebf954034cfafcf8ed9b678b83dec73510d8870d2 /arch/s390/mm
parent1813e51eece0ad6f4aacaeb738e7cced46feb470 (diff)
downloadlinux-1a6baaa0db733c0dca2e170ca1df2b09834f47ce.tar.xz
s390/hugetlb: switch to generic version of follow_huge_pud()
When pud-sized hugepages were introduced for s390, the generic version of follow_huge_pud() was using pte_page() instead of pud_page(). This would be wrong for s390, see also commit 97534127012f ("mm/hugetlb: use pmd_page() in follow_huge_pmd()"). Therefore, and probably because not all archs were supporting pud_page() at that time, a private version of follow_huge_pud() was added for s390, correctly using pud_page(). Since commit 3a194f3f8ad01 ("mm/hugetlb: make pud_huge() and follow_huge_pud() aware of non-present pud entry"), the generic version of follow_huge_pud() is now also using pud_page(), and in general behaves similar to follow_huge_pmd(). Therefore we can now switch to the generic version and get rid of the s390-specific follow_huge_pud(). Link: https://lkml.kernel.org/r/20220818135717.609eef8a@thinkpad Signed-off-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Haiyue Wang <haiyue.wang@intel.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: David Hildenbrand <david@redhat.com> Cc: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/s390/mm')
-rw-r--r--arch/s390/mm/hugetlbpage.c10
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index 10e51ef9c79a..c299a18273ff 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -237,16 +237,6 @@ int pud_huge(pud_t pud)
return pud_large(pud);
}
-struct page *
-follow_huge_pud(struct mm_struct *mm, unsigned long address,
- pud_t *pud, int flags)
-{
- if (flags & FOLL_GET)
- return NULL;
-
- return pud_page(*pud) + ((address & ~PUD_MASK) >> PAGE_SHIFT);
-}
-
bool __init arch_hugetlb_valid_size(unsigned long size)
{
if (MACHINE_HAS_EDAT1 && size == PMD_SIZE)