[JFFS2] File node reference for wasted space when flushing wbuf

Next step in ongoing campaign to file a struct jffs2_raw_node_ref for every
piece of dirty space in the system, so that __totlen can be killed off....

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 676b834..404b547 100644 (file)
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -481,11 +481,11 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
                return ret;
        }
 
-       spin_lock(&c->erase_completion_lock);
-
        /* Adjust free size of the block if we padded. */
        if (pad) {
                struct jffs2_eraseblock *jeb;
+               struct jffs2_raw_node_ref *ref;
+               uint32_t waste = c->wbuf_pagesize - c->wbuf_len;
 
                jeb = &c->blocks[c->wbuf_ofs / c->sector_size];
 
@@ -495,18 +495,29 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
                /* wbuf_pagesize - wbuf_len is the amount of space that's to be
                   padded. If there is less free space in the block than that,
                   something screwed up */
-               if (jeb->free_size < (c->wbuf_pagesize - c->wbuf_len)) {
+               if (jeb->free_size < waste) {
                        printk(KERN_CRIT "jffs2_flush_wbuf(): Accounting error. wbuf at 0x%08x has 0x%03x bytes, 0x%03x left.\n",
-                              c->wbuf_ofs, c->wbuf_len, c->wbuf_pagesize-c->wbuf_len);
+                              c->wbuf_ofs, c->wbuf_len, waste);
                        printk(KERN_CRIT "jffs2_flush_wbuf(): But free_size for block at 0x%08x is only 0x%08x\n",
                               jeb->offset, jeb->free_size);
                        BUG();
                }
-               jeb->free_size -= (c->wbuf_pagesize - c->wbuf_len);
-               c->free_size -= (c->wbuf_pagesize - c->wbuf_len);
-               jeb->wasted_size += (c->wbuf_pagesize - c->wbuf_len);
-               c->wasted_size += (c->wbuf_pagesize - c->wbuf_len);
-       }
+               ref = jffs2_alloc_raw_node_ref();
+               if (!ref)
+                       return -ENOMEM;
+               ref->flash_offset = c->wbuf_ofs + c->wbuf_len;
+               ref->flash_offset |= REF_OBSOLETE;
+
+               spin_lock(&c->erase_completion_lock);
+
+               jffs2_link_node_ref(c, jeb, ref, waste);
+               /* FIXME: that made it count as dirty. Convert to wasted */
+               jeb->dirty_size -= waste;
+               c->dirty_size -= waste;
+               jeb->wasted_size += waste;
+               c->wasted_size += waste;
+       } else
+               spin_lock(&c->erase_completion_lock);
 
        /* Stick any now-obsoleted blocks on the erase_pending_list */
        jffs2_refile_wbuf_blocks(c);