diff options
| -rw-r--r-- | arch/powerpc/mm/hugetlbpage.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 53b200a..123f707 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -436,18 +436,27 @@ static noinline int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long add return 1; } +static unsigned long hugepte_addr_end(unsigned long addr, unsigned long end, + unsigned long sz) +{ + unsigned long __boundary = (addr + sz) & ~(sz-1); + return (__boundary - 1 < end - 1) ? __boundary : end; +} + int gup_hugepd(hugepd_t *hugepd, unsigned pdshift, unsigned long addr, unsigned long end, int write, struct page **pages, int *nr) { pte_t *ptep; unsigned long sz = 1UL << hugepd_shift(*hugepd); + unsigned long next; ptep = hugepte_offset(hugepd, addr, pdshift); do { + next = hugepte_addr_end(addr, end, sz); if (!gup_hugepte(ptep, sz, addr, end, write, pages, nr)) return 0; - } while (ptep++, addr += sz, addr != end); + } while (ptep++, addr = next, addr != end); return 1; } |