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authorRik van Riel <riel@redhat.com>2014-08-06 16:08:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 18:01:22 -0700
commitdbffcd03d77a3fb4d80a7981c7e589fc35769e9b (patch)
treee2171f64cbcc6f03ef4f56cf21b644df73782ae0 /mm
parent68b5a652485682f67eacdee3deae640fb7845b63 (diff)
downloadlinux-dbffcd03d77a3fb4d80a7981c7e589fc35769e9b.tar.gz
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>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 5596d77e8656..5c55270729f7 100644
--- 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);