[JFFS2] Fix dataflash support

- 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>

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index 8df7456472b8..805a166469d2 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: scan.c,v 1.124 2005/09/21 13:05:22 dedekind Exp $
+ * $Id: scan.c,v 1.125 2005/09/30 13:59:13 dedekind Exp $
  *
  */
 #include <linux/kernel.h>
@@ -233,12 +233,12 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
                 c->nextblock->dirty_size = 0;
         }
 #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
-        if (!jffs2_can_mark_obsolete(c) && c->nextblock && (c->nextblock->free_size & (c->wbuf_pagesize-1))) {
+        if (!jffs2_can_mark_obsolete(c) && c->nextblock && (c->nextblock->free_size % c->wbuf_pagesize)) {
                 /* If we're going to start writing into a block which already 
                    contains data, and the end of the data isn't page-aligned,
                    skip a little and align it. */
 
-                uint32_t skip = c->nextblock->free_size & (c->wbuf_pagesize-1);
+                uint32_t skip = c->nextblock->free_size % c->wbuf_pagesize;
 
                 D1(printk(KERN_DEBUG "jffs2_scan_medium(): Skipping %d bytes in nextblock to ensure page alignment\n",
                           skip));