[JFFS2] Remove support for virtual blocks

Remove support for virtual blocks, which are build by
concatenation of multiple physical erase blocks.

For more information please read the MTD mailing list thread
"[PATCH] remove support for virtual blocks"

Signed-off-by: Ferenc Havasi <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>

fs/jffs2/build.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: build.c,v 1.76 2005/07/30 15:29:27 lunn Exp $
+ * $Id: build.c,v 1.77 2005/08/31 13:51:00 havasi Exp $
  *
  */
 
@@ -318,7 +318,7 @@ int jffs2_do_mount_fs(struct jffs2_sb_info *c)
 	c->free_size = c->flash_size;
 	c->nr_blocks = c->flash_size / c->sector_size;
 #ifndef __ECOS
- 	if (c->mtd->flags & MTD_NO_VIRTBLOCKS)
+	if (jffs2_blocks_use_vmalloc(c))
 		c->blocks = vmalloc(sizeof(struct jffs2_eraseblock) * c->nr_blocks);
 	else
 #endif
@@ -356,7 +356,7 @@ int jffs2_do_mount_fs(struct jffs2_sb_info *c)
 		jffs2_free_ino_caches(c);
 		jffs2_free_raw_node_refs(c);
 #ifndef __ECOS
-		if (c->mtd->flags & MTD_NO_VIRTBLOCKS) 
+		if (jffs2_blocks_use_vmalloc(c))
                     vfree(c->blocks);
 		else 
 #endif

fs/jffs2/fs.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: fs.c,v 1.62 2005/08/06 04:51:30 nico Exp $
+ * $Id: fs.c,v 1.64 2005/09/01 08:42:31 havasi Exp $
  *
  */
 
@@ -457,19 +457,8 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
 #endif
 
 	c->flash_size = c->mtd->size;
-
-	/* 
-	 * Check, if we have to concatenate physical blocks to larger virtual blocks
-	 * to reduce the memorysize for c->blocks. (kmalloc allows max. 128K allocation)
-	 */
 	c->sector_size = c->mtd->erasesize; 
 	blocks = c->flash_size / c->sector_size;
-	if (!(c->mtd->flags & MTD_NO_VIRTBLOCKS)) {
-		while ((blocks * sizeof (struct jffs2_eraseblock)) > (128 * 1024)) {
-			blocks >>= 1;
-			c->sector_size <<= 1;
-		}	
-	}
 
 	/*
 	 * Size alignment check
@@ -480,10 +469,6 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
 			c->flash_size / 1024);
 	}
 
-	if (c->sector_size != c->mtd->erasesize)
-		printk(KERN_INFO "jffs2: Erase block size too small (%dKiB). Using virtual blocks size (%dKiB) instead\n", 
-			c->mtd->erasesize / 1024, c->sector_size / 1024);
-
 	if (c->flash_size < 5*c->sector_size) {
 		printk(KERN_ERR "jffs2: Too few erase blocks (%d)\n", c->flash_size / c->sector_size);
 		return -EINVAL;
@@ -533,7 +518,7 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
 	iput(root_i);
 	jffs2_free_ino_caches(c);
 	jffs2_free_raw_node_refs(c);
-	if (c->mtd->flags & MTD_NO_VIRTBLOCKS)
+	if (jffs2_blocks_use_vmalloc(c))
 		vfree(c->blocks);
 	else
 		kfree(c->blocks);

fs/jffs2/nodelist.h

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: nodelist.h,v 1.138 2005/08/17 13:46:23 dedekind Exp $
+ * $Id: nodelist.h,v 1.139 2005/08/31 13:51:00 havasi Exp $
  *
  */
 
@@ -197,6 +197,11 @@ struct jffs2_eraseblock
 	struct jffs2_raw_node_ref *gc_node;	/* Next node to be garbage collected */
 };
 
+static inline int jffs2_blocks_use_vmalloc(struct jffs2_sb_info *c)
+{
+	return ((c->flash_size / c->sector_size) * sizeof (struct jffs2_eraseblock)) > (128 * 1024);
+}
+
 /* Calculate totlen from surrounding nodes or eraseblock */
 static inline uint32_t __ref_totlen(struct jffs2_sb_info *c,
 				    struct jffs2_eraseblock *jeb,

fs/jffs2/super.c

@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: super.c,v 1.107 2005/07/12 16:37:08 dedekind Exp $
+ * $Id: super.c,v 1.108 2005/08/31 13:51:00 havasi Exp $
  *
  */
 
@@ -284,7 +284,7 @@ static void jffs2_put_super (struct super_block *sb)
 	up(&c->alloc_sem);
 	jffs2_free_ino_caches(c);
 	jffs2_free_raw_node_refs(c);
-	if (c->mtd->flags & MTD_NO_VIRTBLOCKS)
+	if (jffs2_blocks_use_vmalloc(c))
 		vfree(c->blocks);
 	else
 		kfree(c->blocks);