2008-02-19 19:16:19

by Michael Trimarchi

[permalink] [raw]
Subject: [PATCH] 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 <[email protected]>
---
fs/jffs2/wbuf.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index d1d4f27..ba49f19 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -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);
}

--
1.5.2.1.174.gcd03