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-rw-r--r--fs/jffs2/wbuf.c35
1 files changed, 32 insertions, 3 deletions
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 894dea88678..a35e007e5bf 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -9,7 +9,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: wbuf.c,v 1.87 2005/02/09 09:09:02 pavlov Exp $
+ * $Id: wbuf.c,v 1.88 2005/02/09 09:17:41 pavlov Exp $
*
*/
@@ -435,7 +435,7 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
if we have a switch to next page, we will not have
enough remaining space for this.
*/
- if (pad) {
+ if (pad && !jffs2_dataflash(c)) {
c->wbuf_len = PAD(c->wbuf_len);
/* Pad with JFFS2_DIRTY_BITMASK initially. this helps out ECC'd NOR
@@ -486,7 +486,7 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
spin_lock(&c->erase_completion_lock);
/* Adjust free size of the block if we padded. */
- if (pad) {
+ if (pad && !jffs2_dataflash(c)) {
struct jffs2_eraseblock *jeb;
jeb = &c->blocks[c->wbuf_ofs / c->sector_size];
@@ -604,8 +604,14 @@ int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c)
return ret;
}
+#ifdef CONFIG_JFFS2_FS_DATAFLASH
+#define PAGE_DIV(x) ( ((unsigned long)(x) / (unsigned long)(c->wbuf_pagesize)) * (unsigned long)(c->wbuf_pagesize) )
+#define PAGE_MOD(x) ( (unsigned long)(x) % (unsigned long)(c->wbuf_pagesize) )
+#else
#define PAGE_DIV(x) ( (x) & (~(c->wbuf_pagesize - 1)) )
#define PAGE_MOD(x) ( (x) & (c->wbuf_pagesize - 1) )
+#endif
+
int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *invecs, unsigned long count, loff_t to, size_t *retlen, uint32_t ino)
{
struct kvec outvecs[3];
@@ -1192,6 +1198,29 @@ void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c)
kfree(c->wbuf);
}
+#ifdef CONFIG_JFFS2_FS_DATAFLASH
+int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
+ c->cleanmarker_size = 0; /* No cleanmarkers needed */
+
+ /* Initialize write buffer */
+ init_rwsem(&c->wbuf_sem);
+ c->wbuf_pagesize = c->sector_size;
+ c->wbuf_ofs = 0xFFFFFFFF;
+
+ c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
+ if (!c->wbuf)
+ return -ENOMEM;
+
+ printk(KERN_INFO "JFFS2 write-buffering enabled (%i)\n", c->wbuf_pagesize);
+
+ return 0;
+}
+
+void jffs2_dataflash_cleanup(struct jffs2_sb_info *c) {
+ kfree(c->wbuf);
+}
+#endif
+
#ifdef CONFIG_JFFS2_FS_NOR_ECC
int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c) {
/* Cleanmarker is actually larger on the flashes */