mm: change confusing #ifdef use in __access_remote_vm

This patch changes confusing #ifdef use in __access_remote_vm into
merely ugly #ifdef use.

Addresses bug https://bugzilla.kernel.org/show_bug.cgi?id=81651

Signed-off-by: Rik van Riel <riel@redhat.com>
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/memory.c b/mm/memory.c
index 5596d77..5c55270 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3613,11 +3613,13 @@ static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
                ret = get_user_pages(tsk, mm, addr, 1,
                                write, 1, &page, &vma);
                if (ret <= 0) {
+#ifndef CONFIG_HAVE_IOREMAP_PROT
+                       break;
+#else
                        /*
                         * Check if this is a VM_IO | VM_PFNMAP VMA, which
                         * we can access using slightly different code.
                         */
-#ifdef CONFIG_HAVE_IOREMAP_PROT
                        vma = find_vma(mm, addr);
                        if (!vma || vma->vm_start > addr)
                                break;
@@ -3625,9 +3627,9 @@ static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
                                ret = vma->vm_ops->access(vma, addr, buf,
                                                          len, write);
                        if (ret <= 0)
-#endif
                                break;
                        bytes = ret;
+#endif
                } else {
                        bytes = len;
                        offset = addr & (PAGE_SIZE-1);