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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2015-02-11 15:25:15 -0800 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-05-17 19:12:31 -0400 |
| commit | dd8f776dbe944939dd940b981d160f2fa3191641 (patch) | |
| tree | 04b67c526ced1baec05498a1b7096e9c14890422 /arch/ia64 | |
| parent | ced9df8d7f9957e9b04e8080e0cd847f4e84f12f (diff) | |
| download | linux-stable-dd8f776dbe944939dd940b981d160f2fa3191641.tar.gz linux-stable-dd8f776dbe944939dd940b981d160f2fa3191641.tar.bz2 linux-stable-dd8f776dbe944939dd940b981d160f2fa3191641.zip | |
mm/hugetlb: use pmd_page() in follow_huge_pmd()
[ Upstream commit 97534127012f0e396eddea4691f4c9b170aed74b ]
Commit 61f77eda9bbf ("mm/hugetlb: reduce arch dependent code around
follow_huge_*") broke follow_huge_pmd() on s390, where pmd and pte
layout differ and using pte_page() on a huge pmd will return wrong
results. Using pmd_page() instead fixes this.
All architectures that were touched by that commit have pmd_page()
defined, so this should not break anything on other architectures.
Fixes: 61f77eda "mm/hugetlb: reduce arch dependent code around follow_huge_*"
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@suse.cz>, Andrea Arcangeli <aarcange@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/mm/hugetlbpage.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c index 76069c18ee42..52b7604b5215 100644 --- a/arch/ia64/mm/hugetlbpage.c +++ b/arch/ia64/mm/hugetlbpage.c @@ -114,12 +114,6 @@ int pud_huge(pud_t pud) return 0; } -struct page * -follow_huge_pmd(struct mm_struct *mm, unsigned long address, pmd_t *pmd, int write) -{ - return NULL; -} - void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, unsigned long end, unsigned long floor, unsigned long ceiling) |