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[JFFS2] add write verify on dataflash. 

Add the write verification buffer to the dataflash.  The mtd_dataflash has
the CONFIG_DATAFLASH_WRITE_VERIFY so is better a change to Kconfig.

Signed-off-by: Michael Trimarchi <trimarchimichael@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
michael 2008-04-18 13:44:17 -07:00 committed by David Woodhouse
parent 0bc88c59cc
commit cca1584171
1 changed files with 12 additions and 0 deletions
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12
fs/jffs2/wbuf.c
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@ -1236,12 +1236,24 @@ int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
if (!c->wbuf)
return -ENOMEM;
#ifdef CONFIG_JFFS2_FS_WBUF_VERIFY
c->wbuf_verify = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
if (!c->wbuf_verify) {
kfree(c->oobbuf);
kfree(c->wbuf);
return -ENOMEM;
}
#endif
printk(KERN_INFO "JFFS2 write-buffering enabled buffer (%d) erasesize (%d)\n", c->wbuf_pagesize, c->sector_size);
return 0;
}
void jffs2_dataflash_cleanup(struct jffs2_sb_info *c) {
#ifdef CONFIG_JFFS2_FS_WBUF_VERIFY
kfree(c->wbuf_verify);
#endif
kfree(c->wbuf);
}