Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[linux-2.6] / fs / jffs2 / wbuf.c

diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index de718e3a169296c6c6dc526743f2498762205ee8..91d1d0f1c66c72c1d0c925d383f8e2a02973e2c4 100644 (file)
--- 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>
@@ -238,7 +236,10 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
        jeb = &c->blocks[c->wbuf_ofs / c->sector_size];
 
        spin_lock(&c->erase_completion_lock);
-       jffs2_block_refile(c, jeb, REFILE_NOTEMPTY);
+       if (c->wbuf_ofs % c->mtd->erasesize)
+               jffs2_block_refile(c, jeb, REFILE_NOTEMPTY);
+       else
+               jffs2_block_refile(c, jeb, REFILE_ANYWAY);
        spin_unlock(&c->erase_completion_lock);
 
        BUG_ON(!ref_obsolete(jeb->last_node));
@@ -342,6 +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");
@@ -633,7 +637,10 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
 
        memset(c->wbuf,0xff,c->wbuf_pagesize);
        /* adjust write buffer offset, else we get a non contiguous write bug */
-       c->wbuf_ofs += c->wbuf_pagesize;
+       if (SECTOR_ADDR(c->wbuf_ofs) == SECTOR_ADDR(c->wbuf_ofs+c->wbuf_pagesize))
+               c->wbuf_ofs += c->wbuf_pagesize;
+       else
+               c->wbuf_ofs = 0xffffffff;
        c->wbuf_len = 0;
        return 0;
 }
@@ -964,9 +971,9 @@ 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)
 };
 
 /*
@@ -1087,7 +1094,7 @@ int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *
        if (!c->mtd->block_markbad)
                return 1; // What else can we do?
 
-       D1(printk(KERN_WARNING "jffs2_write_nand_badblock(): Marking bad block at %08x\n", bad_offset));
+       printk(KERN_WARNING "JFFS2: marking eraseblock at %08x\n as bad", bad_offset);
        ret = c->mtd->block_markbad(c->mtd, bad_offset);
 
        if (ret) {
@@ -1205,3 +1212,27 @@ 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);
+}