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[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 <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ferenc Havasi 2005-08-31 14:51:04 +01:00 committed by Thomas Gleixner
parent f0507530cb
commit 4ce1f56218
4 changed files with 13 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/jffs2/build.c
View File

@ -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

19
fs/jffs2/fs.c
View File

@ -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);

7
fs/jffs2/nodelist.h
View File

@ -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,

4
fs/jffs2/super.c
View File

@ -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);