sparc64: Fix hugepage page table free

[karo-tx-linux.git] / arch / sparc / mm / hugetlbpage.c

diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index ee5273ad918de6302cb0f6644b2a4179f8c26351..7c29d38e6b99c68c5ac746eb3d3a3fe1da8394a5 100644 (file)
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -461,6 +461,22 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb,
        pgd_t *pgd;
        unsigned long next;
 
+       addr &= PMD_MASK;
+       if (addr < floor) {
+               addr += PMD_SIZE;
+               if (!addr)
+                       return;
+       }
+       if (ceiling) {
+               ceiling &= PMD_MASK;
+               if (!ceiling)
+                       return;
+       }
+       if (end - 1 > ceiling - 1)
+               end -= PMD_SIZE;
+       if (addr > end - 1)
+               return;
+
        pgd = pgd_offset(tlb->mm, addr);
        do {
                next = pgd_addr_end(addr, end);