From 64239466cac1b316650213aaa07c92f57c3e7861 Mon Sep 17 00:00:00 2001
From: charles <charles>
Date: Fri, 7 Oct 2005 02:46:49 +0000
Subject: [PATCH] Add support for vmallocing large blockInfos

---
 yaffs_guts.c | 15 +++++++++++++--
 yaffs_guts.h |  3 ++-
 yportenv.h   |  7 ++++++-
 3 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/yaffs_guts.c b/yaffs_guts.c
index 90aba83..eafbaa9 100644
--- a/yaffs_guts.c
+++ b/yaffs_guts.c
@@ -13,7 +13,7 @@
  */
 
 const char *yaffs_guts_c_version =
-    "$Id: yaffs_guts.c,v 1.19 2005-09-20 05:08:50 charles Exp $";
+    "$Id: yaffs_guts.c,v 1.20 2005-10-07 02:46:49 charles Exp $";
 
 #include "yportenv.h"
 
@@ -1747,6 +1747,12 @@ static int yaffs_InitialiseBlocks(yaffs_Device * dev, int nBlocks)
 
 	/* Todo we're assuming the malloc will pass. */
 	dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo));
+	if(!dev->blockInfo){
+		dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo));
+		dev->blockInfoAlt = 1;
+	}
+	else
+		dev->blockInfoAlt = 0;
 	
 	/* Set up dynamic blockinfo stuff. */
 	dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8;
@@ -1763,7 +1769,12 @@ static int yaffs_InitialiseBlocks(yaffs_Device * dev, int nBlocks)
 
 static void yaffs_DeinitialiseBlocks(yaffs_Device * dev)
 {
-	YFREE(dev->blockInfo);
+	if(dev->blockInfoAlt)
+		YFREE_ALT(dev->blockInfo);
+	else
+		YFREE(dev->blockInfo);
+	dev->blockInfoAlt = 0;
+
 	dev->blockInfo = NULL;
 	YFREE(dev->chunkBits);
 	dev->chunkBits = NULL;
diff --git a/yaffs_guts.h b/yaffs_guts.h
index 535a269..c5eee97 100644
--- a/yaffs_guts.h
+++ b/yaffs_guts.h
@@ -14,7 +14,7 @@
  *
  * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
  *
- * $Id: yaffs_guts.h,v 1.14 2005-09-20 05:05:40 charles Exp $
+ * $Id: yaffs_guts.h,v 1.15 2005-10-07 02:46:50 charles Exp $
  */
 
 #ifndef __YAFFS_GUTS_H__
@@ -561,6 +561,7 @@ struct yaffs_DeviceStruct {
 
 	/* Block Info */
 	yaffs_BlockInfo *blockInfo;
+	int blockInfoAlt;	/* was allocated using alternative strategy */
 	__u8 *chunkBits;	/* bitmap of chunks in use */
 	int chunkBitmapStride;	/* Number of bytes of chunkBits per block. 
 				 * Must be consistent with nChunksPerBlock.
diff --git a/yportenv.h b/yportenv.h
index 0543383..240b6b9 100644
--- a/yportenv.h
+++ b/yportenv.h
@@ -15,7 +15,7 @@
  *
  * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
  *
- * $Id: yportenv.h,v 1.8 2005-09-18 05:31:26 marty Exp $
+ * $Id: yportenv.h,v 1.9 2005-10-07 02:46:50 charles Exp $
  *
  */
 
@@ -37,6 +37,7 @@
 #include <linux/mm.h>
 #include <linux/string.h>
 #include <linux/slab.h>
+#include <linux/vmalloc.h>
 
 #define YCHAR char
 #define YUCHAR unsigned char
@@ -55,6 +56,8 @@
 /* #define YPRINTF(x) printk x */
 #define YMALLOC(x) kmalloc(x,GFP_KERNEL)
 #define YFREE(x)   kfree(x)
+#define YMALLOC_ALT(x) vmalloc(x)
+#define YFREE_ALT(x)   vfree(x)
 
 #define YAFFS_ROOT_MODE				0666
 #define YAFFS_LOSTNFOUND_MODE		0666
@@ -91,6 +94,8 @@
 
 #define YMALLOC(x) malloc(x)
 #define YFREE(x)   free(x)
+#define YMALLOC_ALT(x) malloc(x)
+#define YFREE_ALT(x) free(x)
 
 #define YCHAR char
 #define YUCHAR unsigned char
-- 
2.30.2