From e460c2c91af44374cbfa3f1c70f5ca9bbf099aa9 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 6 May 2010 17:15:58 +1000 Subject: [PATCH] powerpc: 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: linuxppc-dev@ozlabs.org Cc: Benjamin Herrenschmidt Cc: linux-arch@vger.kernel.org Signed-off-by: Nick Piggin Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/mm/fault.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 83ac4935eb10..1bd712c33ce2 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -308,7 +308,6 @@ good_area: * make sure we exit gracefully rather than endlessly redo * the fault. */ - survive: ret = handle_mm_fault(mm, vma, address, is_write ? FAULT_FLAG_WRITE : 0); if (unlikely(ret & VM_FAULT_ERROR)) { if (ret & VM_FAULT_OOM) @@ -360,15 +359,10 @@ bad_area_nosemaphore: */ 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); - return SIGKILL; + if (!user_mode(regs)) + return SIGKILL; + pagefault_out_of_memory(); + return 0; do_sigbus: up_read(&mm->mmap_sem);