1 files changed, 159 insertions, 5 deletions

diff --git a/fs/jffs2/debug.c b/fs/jffs2/debug.c
index 3a32c64ed497..5544d31c066b 100644
--- a/fs/jffs2/debug.c
+++ b/fs/jffs2/debug.c
@@ -62,9 +62,9 @@ __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
 void
 __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f)
 {
-        down(&f->sem);
+        mutex_lock(&f->sem);
         __jffs2_dbg_fragtree_paranoia_check_nolock(f);
-        up(&f->sem);
+        mutex_unlock(&f->sem);
 }
 
 void
@@ -153,6 +153,139 @@ __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
         kfree(buf);
 }
 
+void __jffs2_dbg_superblock_counts(struct jffs2_sb_info *c)
+{
+        struct jffs2_eraseblock *jeb;
+        uint32_t free = 0, dirty = 0, used = 0, wasted = 0,
+                erasing = 0, bad = 0, unchecked = 0;
+        int nr_counted = 0;
+        int dump = 0;
+
+        if (c->gcblock) {
+                nr_counted++;
+                free += c->gcblock->free_size;
+                dirty += c->gcblock->dirty_size;
+                used += c->gcblock->used_size;
+                wasted += c->gcblock->wasted_size;
+                unchecked += c->gcblock->unchecked_size;
+        }
+        if (c->nextblock) {
+                nr_counted++;
+                free += c->nextblock->free_size;
+                dirty += c->nextblock->dirty_size;
+                used += c->nextblock->used_size;
+                wasted += c->nextblock->wasted_size;
+                unchecked += c->nextblock->unchecked_size;
+        }
+        list_for_each_entry(jeb, &c->clean_list, list) {
+                nr_counted++;
+                free += jeb->free_size;
+                dirty += jeb->dirty_size;
+                used += jeb->used_size;
+                wasted += jeb->wasted_size;
+                unchecked += jeb->unchecked_size;
+        }
+        list_for_each_entry(jeb, &c->very_dirty_list, list) {
+                nr_counted++;
+                free += jeb->free_size;
+                dirty += jeb->dirty_size;
+                used += jeb->used_size;
+                wasted += jeb->wasted_size;
+                unchecked += jeb->unchecked_size;
+        }
+        list_for_each_entry(jeb, &c->dirty_list, list) {
+                nr_counted++;
+                free += jeb->free_size;
+                dirty += jeb->dirty_size;
+                used += jeb->used_size;
+                wasted += jeb->wasted_size;
+                unchecked += jeb->unchecked_size;
+        }
+        list_for_each_entry(jeb, &c->erasable_list, list) {
+                nr_counted++;
+                free += jeb->free_size;
+                dirty += jeb->dirty_size;
+                used += jeb->used_size;
+                wasted += jeb->wasted_size;
+                unchecked += jeb->unchecked_size;
+        }
+        list_for_each_entry(jeb, &c->erasable_pending_wbuf_list, list) {
+                nr_counted++;
+                free += jeb->free_size;
+                dirty += jeb->dirty_size;
+                used += jeb->used_size;
+                wasted += jeb->wasted_size;
+                unchecked += jeb->unchecked_size;
+        }
+        list_for_each_entry(jeb, &c->erase_pending_list, list) {
+                nr_counted++;
+                free += jeb->free_size;
+                dirty += jeb->dirty_size;
+                used += jeb->used_size;
+                wasted += jeb->wasted_size;
+                unchecked += jeb->unchecked_size;
+        }
+        list_for_each_entry(jeb, &c->free_list, list) {
+                nr_counted++;
+                free += jeb->free_size;
+                dirty += jeb->dirty_size;
+                used += jeb->used_size;
+                wasted += jeb->wasted_size;
+                unchecked += jeb->unchecked_size;
+        }
+        list_for_each_entry(jeb, &c->bad_used_list, list) {
+                nr_counted++;
+                free += jeb->free_size;
+                dirty += jeb->dirty_size;
+                used += jeb->used_size;
+                wasted += jeb->wasted_size;
+                unchecked += jeb->unchecked_size;
+        }
+
+        list_for_each_entry(jeb, &c->erasing_list, list) {
+                nr_counted++;
+                erasing += c->sector_size;
+        }
+        list_for_each_entry(jeb, &c->erase_checking_list, list) {
+                nr_counted++;
+                erasing += c->sector_size;
+        }
+        list_for_each_entry(jeb, &c->erase_complete_list, list) {
+                nr_counted++;
+                erasing += c->sector_size;
+        }
+        list_for_each_entry(jeb, &c->bad_list, list) {
+                nr_counted++;
+                bad += c->sector_size;
+        }
+
+#define check(sz) \
+        if (sz != c->sz##_size) {                       \
+                printk(KERN_WARNING #sz "_size mismatch counted 0x%x, c->" #sz "_size 0x%x\n", \
+                       sz, c->sz##_size);               \
+                dump = 1;                               \
+        }
+        check(free);
+        check(dirty);
+        check(used);
+        check(wasted);
+        check(unchecked);
+        check(bad);
+        check(erasing);
+#undef check
+
+        if (nr_counted != c->nr_blocks) {
+                printk(KERN_WARNING "%s counted only 0x%x blocks of 0x%x. Where are the others?\n",
+                       __func__, nr_counted, c->nr_blocks);
+                dump = 1;
+        }
+
+        if (dump) {
+                __jffs2_dbg_dump_block_lists_nolock(c);
+                BUG();
+        }
+}
+
 /*
  * Check the space accounting and node_ref list correctness for the JFFS2 erasable block 'jeb'.
  */
@@ -229,6 +362,9 @@ __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
         }
 #endif
 
+        if (!(c->flags & (JFFS2_SB_FLAG_BUILDING|JFFS2_SB_FLAG_SCANNING)))
+                __jffs2_dbg_superblock_counts(c);
+
         return;
 
 error:
@@ -268,7 +404,10 @@ __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
 
         printk(JFFS2_DBG);
         for (ref = jeb->first_node; ; ref = ref_next(ref)) {
-                printk("%#08x(%#x)", ref_offset(ref), ref->__totlen);
+                printk("%#08x", ref_offset(ref));
+#ifdef TEST_TOTLEN
+                printk("(%x)", ref->__totlen);
+#endif
                 if (ref_next(ref))
                         printk("->");
                 else
@@ -447,6 +586,21 @@ __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c)
                         }
                 }
         }
+        if (list_empty(&c->erase_checking_list)) {
+                printk(JFFS2_DBG "erase_checking_list: empty\n");
+        } else {
+                struct list_head *this;
+
+                list_for_each(this, &c->erase_checking_list) {
+                        struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
+
+                        if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
+                                printk(JFFS2_DBG "erase_checking_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
+                                        jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
+                                        jeb->unchecked_size, jeb->free_size);
+                        }
+                }
+        }
 
         if (list_empty(&c->erase_pending_list)) {
                 printk(JFFS2_DBG "erase_pending_list: empty\n");
@@ -532,9 +686,9 @@ __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c)
 void
 __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f)
 {
-        down(&f->sem);
+        mutex_lock(&f->sem);
         jffs2_dbg_dump_fragtree_nolock(f);
-        up(&f->sem);
+        mutex_unlock(&f->sem);
 }
 
 void