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[JFFS2] Fix dataflash support

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- assume wbuf may be of size which is not power of 2
- don't make strange assumption about not padding wbuf for DataFlash
- use wbuf = DataFlash page and eraseblock >= 8 Dataflash pages

From: Peter Menzebach <pm-mtd@mw-itcon.de>
Acked-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Artem B. Bityutskiy
2005-09-30 14:59:17 +01:00
committed by Thomas Gleixner
parent 83a368380e
commit daba5cc4bc
3 changed files with 40 additions and 22 deletions
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6
fs/jffs2/os-linux.h
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@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
* $Id: os-linux.h,v 1.63 2005/09/21 11:55:21 dedekind Exp $
* $Id: os-linux.h,v 1.64 2005/09/30 13:59:13 dedekind Exp $
*
*/
@@ -65,8 +65,9 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
#define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c)->s_flags & MS_RDONLY)
#define SECTOR_ADDR(x) ( (((unsigned long)(x) / c->sector_size) * c->sector_size) )
#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
#define SECTOR_ADDR(x) ( ((unsigned long)(x) & ~(c->sector_size-1)) )
#ifdef CONFIG_JFFS2_SUMMARY
#define jffs2_can_mark_obsolete(c) (0)
@@ -102,7 +103,6 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
#else /* NAND and/or ECC'd NOR support present */
#define jffs2_is_writebuffered(c) (c->wbuf != NULL)
#define SECTOR_ADDR(x) ( ((unsigned long)(x) / (unsigned long)(c->sector_size)) * c->sector_size )
#ifdef CONFIG_JFFS2_SUMMARY
#define jffs2_can_mark_obsolete(c) (0)