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Diffstat (limited to 'fs/jffs2/wbuf.c')
-rw-r--r--fs/jffs2/wbuf.c39
1 files changed, 32 insertions, 7 deletions
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 4fac6dd5395..c556e85a565 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -1,16 +1,14 @@
/*
* JFFS2 -- Journalling Flash File System, Version 2.
*
- * Copyright (C) 2001-2003 Red Hat, Inc.
- * Copyright (C) 2004 Thomas Gleixner <tglx@linutronix.de>
+ * Copyright © 2001-2007 Red Hat, Inc.
+ * Copyright © 2004 Thomas Gleixner <tglx@linutronix.de>
*
* Created by David Woodhouse <dwmw2@infradead.org>
* Modified debugged and enhanced by Thomas Gleixner <tglx@linutronix.de>
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: wbuf.c,v 1.100 2005/09/30 13:59:13 dedekind Exp $
- *
*/
#include <linux/kernel.h>
@@ -345,6 +343,9 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
return;
}
+ /* The summary is not recovered, so it must be disabled for this erase block */
+ jffs2_sum_disable_collecting(c->summary);
+
ret = jffs2_prealloc_raw_node_refs(c, c->nextblock, nr_refile);
if (ret) {
printk(KERN_WARNING "Failed to allocate node refs for wbuf recovery. Data loss ensues.\n");
@@ -967,9 +968,9 @@ exit:
static const struct jffs2_unknown_node oob_cleanmarker =
{
- .magic = cpu_to_je16(JFFS2_MAGIC_BITMASK),
- .nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER),
- .totlen = cpu_to_je32(8)
+ .magic = constant_cpu_to_je16(JFFS2_MAGIC_BITMASK),
+ .nodetype = constant_cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER),
+ .totlen = constant_cpu_to_je32(8)
};
/*
@@ -1208,3 +1209,27 @@ int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c) {
void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c) {
kfree(c->wbuf);
}
+
+int jffs2_ubivol_setup(struct jffs2_sb_info *c) {
+ c->cleanmarker_size = 0;
+
+ if (c->mtd->writesize == 1)
+ /* We do not need write-buffer */
+ return 0;
+
+ init_rwsem(&c->wbuf_sem);
+
+ c->wbuf_pagesize = c->mtd->writesize;
+ c->wbuf_ofs = 0xFFFFFFFF;
+ c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
+ if (!c->wbuf)
+ return -ENOMEM;
+
+ printk(KERN_INFO "JFFS2 write-buffering enabled buffer (%d) erasesize (%d)\n", c->wbuf_pagesize, c->sector_size);
+
+ return 0;
+}
+
+void jffs2_ubivol_cleanup(struct jffs2_sb_info *c) {
+ kfree(c->wbuf);
+}