microblaze: invoke oom-killer from page fault
authorNick Piggin <npiggin@suse.de>
Thu, 22 Apr 2010 16:06:21 +0000 (02:06 +1000)
committerMichal Simek <monstr@monstr.eu>
Thu, 6 May 2010 09:21:58 +0000 (11:21 +0200)
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: microblaze-uclinux@itee.uq.edu.au
Cc: Michal Simek <monstr@monstr.eu>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Simek <monstr@monstr.eu>
arch/microblaze/mm/fault.c

index 7af87f4b2c2c73a86ff88d023e5ddfee342d6240..bab9229931858475d886fd3ac750883c92f5f614 100644 (file)
@@ -273,16 +273,11 @@ bad_area_nosemaphore:
  * us unable to handle the page fault gracefully.
  */
 out_of_memory:
-       if (current->pid == 1) {
-               yield();
-               down_read(&mm->mmap_sem);
-               goto survive;
-       }
        up_read(&mm->mmap_sem);
-       printk(KERN_WARNING "VM: killing process %s\n", current->comm);
-       if (user_mode(regs))
-               do_exit(SIGKILL);
-       bad_page_fault(regs, address, SIGKILL);
+       if (!user_mode(regs))
+               bad_page_fault(regs, address, SIGKILL);
+       else
+               pagefault_out_of_memory();
        return;
 
 do_sigbus: