m68k: invoke oom-killer from page fault

As explained in commit 1c0fe6e3bd, we want to call the architecture independent
oom killer when getting an unexplained OOM from handle_mm_fault, rather than
simply killing current.

Cc: linux-m68k@lists.linux-m68k.org
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
[Geert] Kill 2 introduced compiler warnings
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

1 files changed, 4 insertions, 10 deletions

diff --git a/arch/m68k/mm/fault.c b/arch/m68k/mm/fault.c
index d0e35cf99fc6..a96394a0333d 100644
--- a/arch/m68k/mm/fault.c
+++ b/arch/m68k/mm/fault.c
@@ -154,7 +154,6 @@ good_area:
          * the fault.
          */
 
- survive:
         fault = handle_mm_fault(mm, vma, address, write ? FAULT_FLAG_WRITE : 0);
 #ifdef DEBUG
         printk("handle_mm_fault returns %d\n",fault);
@@ -180,15 +179,10 @@ good_area:
  */
 out_of_memory:
         up_read(&mm->mmap_sem);
-        if (is_global_init(current)) {
-                yield();
-                down_read(&mm->mmap_sem);
-                goto survive;
-        }
-
-        printk("VM: killing process %s\n", current->comm);
-        if (user_mode(regs))
-                do_group_exit(SIGKILL);
+        if (!user_mode(regs))
+                goto no_context;
+        pagefault_out_of_memory();
+        return 0;
 
 no_context:
         current->thread.signo = SIGBUS;