From: npiggin@suse.de <npiggin@suse.de>
Date: Fri, 7 May 2010 21:34:33 +0000 (-0700)
Subject: [IA64] invoke oom-killer from page fault
X-Git-Tag: v2.6.35-rc1~502^2~1
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=0c3b96e44739cdba7a75030107a2b47a15ee5f60;p=~emulex%2Finfiniband.git

[IA64] 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.

Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---

diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c
index 19261a99e62..0799fea4c58 100644
--- a/arch/ia64/mm/fault.c
+++ b/arch/ia64/mm/fault.c
@@ -148,7 +148,6 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
 	if ((vma->vm_flags & mask) != mask)
 		goto bad_area;
 
-  survive:
 	/*
 	 * If for any reason at all we couldn't handle the fault, make
 	 * sure we exit gracefully rather than endlessly redo the
@@ -276,13 +275,7 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
 
   out_of_memory:
 	up_read(&mm->mmap_sem);
-	if (is_global_init(current)) {
-		yield();
-		down_read(&mm->mmap_sem);
-		goto survive;
-	}
-	printk(KERN_CRIT "VM: killing process %s\n", current->comm);
-	if (user_mode(regs))
-		do_group_exit(SIGKILL);
-	goto no_context;
+	if (!user_mode(regs))
+		goto no_context;
+	pagefault_out_of_memory();
 }