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[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>
This commit is contained in:
David Woodhouse 2006-05-21 13:00:54 +01:00
parent b64335f2b7
commit 0bcc099d6d
1 changed files with 20 additions and 9 deletions
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29
fs/jffs2/wbuf.c
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@ -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);