From a887b4dada2f23b2ff2aa725e0509c92dc652597 Mon Sep 17 00:00:00 2001
From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Sat, 4 Jul 2009 01:33:09 +0900
Subject: MIPS: Drop mmap_sem in pagefault oom path

Fix the pagefault oom path which does not drop mm->mmap_sem.
This was introduced by commit c7c1e3846bac1e4b8a8941f6a194812e28b0a519

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/mm/fault.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'arch/mips')

diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 6751ce9ede9e..f956ecbb8136 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -171,6 +171,7 @@ out_of_memory:
 	 * We ran out of memory, call the OOM killer, and return the userspace
 	 * (which will retry the fault, or kill us if we got oom-killed).
 	 */
+	up_read(&mm->mmap_sem);
 	pagefault_out_of_memory();
 	return;
 
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