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Commit cca15841 authored by michael's avatar michael Committed by David Woodhouse
Browse files

[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: default avatarMichael Trimarchi <trimarchimichael@yahoo.it>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent 0bc88c59

fs/jffs2/wbuf.c

+12 −0
Original line number Diff line number Diff line
@@ -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);

}