From 38db195996791ae44df22ca4fc484cc3a7eb89a7 Mon Sep 17 00:00:00 2001
From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Date: Tue, 28 Aug 2007 20:33:32 +0300
Subject: [PATCH] --- yaml --- r: 68519 b: refs/heads/master c:
 98b830d26095007aeb04041147b93d2b74e0a0c0 h: refs/heads/master i:   68517:
 684571ff014ec1de97730ae3300bd4c922087db9   68515:
 645a29c1e575ad61dd419bfcf4f511d915cc9b8e   68511:
 e6c1ba5db0a06662c229eac07130f0f1f59607a6 v: v3

---
 [refs]                           | 2 +-
 trunk/drivers/mtd/nand/nandsim.c | 8 +++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 1d60a5f963b2..31dd2dc8b598 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 241651d04d672fb685b2874707016cbbf95931e5
+refs/heads/master: 98b830d26095007aeb04041147b93d2b74e0a0c0
diff --git a/trunk/drivers/mtd/nand/nandsim.c b/trunk/drivers/mtd/nand/nandsim.c
index 205df0f771fe..a7574807dc46 100644
--- a/trunk/drivers/mtd/nand/nandsim.c
+++ b/trunk/drivers/mtd/nand/nandsim.c
@@ -1272,7 +1272,13 @@ static int prog_page(struct nandsim *ns, int num)
 	mypage = NS_GET_PAGE(ns);
 	if (mypage->byte == NULL) {
 		NS_DBG("prog_page: allocating page %d\n", ns->regs.row);
-		mypage->byte = kmalloc(ns->geom.pgszoob, GFP_KERNEL);
+		/*
+		 * We allocate memory with GFP_NOFS because a flash FS may
+		 * utilize this. If it is holding an FS lock, then gets here,
+		 * then kmalloc runs writeback which goes to the FS again
+		 * and deadlocks. This was seen in practice.
+		 */
+		mypage->byte = kmalloc(ns->geom.pgszoob, GFP_NOFS);
 		if (mypage->byte == NULL) {
 			NS_ERR("prog_page: error allocating memory for page %d\n", ns->regs.row);
 			return -1;