diff options
Diffstat (limited to 'kernel/ptrace.c')
| -rw-r--r-- | kernel/ptrace.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 6c5d1f143..a749bb501 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -24,7 +24,6 @@ static int access_one_page(struct mm_struct * mm, struct vm_area_struct * vma, u pgd_t * pgdir; pmd_t * pgmiddle; pte_t * pgtable; - unsigned long mapnr; unsigned long maddr; struct page *page; @@ -42,11 +41,10 @@ repeat: pgtable = pte_offset(pgmiddle, addr); if (!pte_present(*pgtable)) goto fault_in_page; - mapnr = pte_pagenr(*pgtable); if (write && (!pte_write(*pgtable) || !pte_dirty(*pgtable))) goto fault_in_page; - page = mem_map + mapnr; - if ((mapnr >= max_mapnr) || PageReserved(page)) + page = pte_page(*pgtable); + if ((!VALID_PAGE(page)) || PageReserved(page)) return 0; flush_cache_page(vma, addr); |