Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 3193 deletions

diff --git a/ANDROID_3.4.5/fs/ubifs/debug.c b/ANDROID_3.4.5/fs/ubifs/debug.c
deleted file mode 100644
index 1934084e..00000000
--- a/ANDROID_3.4.5/fs/ubifs/debug.c
+++ /dev/null
@@ -1,3193 +0,0 @@
-/*
- * This file is part of UBIFS.
- *
- * Copyright (C) 2006-2008 Nokia Corporation
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Authors: Artem Bityutskiy (Битюцкий Артём)
- *          Adrian Hunter
- */
-
-/*
- * This file implements most of the debugging stuff which is compiled in only
- * when it is enabled. But some debugging check functions are implemented in
- * corresponding subsystem, just because they are closely related and utilize
- * various local functions of those subsystems.
- */
-
-#include <linux/module.h>
-#include <linux/debugfs.h>
-#include <linux/math64.h>
-#include <linux/uaccess.h>
-#include <linux/random.h>
-#include "ubifs.h"
-
-#ifdef CONFIG_UBIFS_FS_DEBUG
-
-static DEFINE_SPINLOCK(dbg_lock);
-
-static const char *get_key_fmt(int fmt)
-{
-	switch (fmt) {
-	case UBIFS_SIMPLE_KEY_FMT:
-		return "simple";
-	default:
-		return "unknown/invalid format";
-	}
-}
-
-static const char *get_key_hash(int hash)
-{
-	switch (hash) {
-	case UBIFS_KEY_HASH_R5:
-		return "R5";
-	case UBIFS_KEY_HASH_TEST:
-		return "test";
-	default:
-		return "unknown/invalid name hash";
-	}
-}
-
-static const char *get_key_type(int type)
-{
-	switch (type) {
-	case UBIFS_INO_KEY:
-		return "inode";
-	case UBIFS_DENT_KEY:
-		return "direntry";
-	case UBIFS_XENT_KEY:
-		return "xentry";
-	case UBIFS_DATA_KEY:
-		return "data";
-	case UBIFS_TRUN_KEY:
-		return "truncate";
-	default:
-		return "unknown/invalid key";
-	}
-}
-
-static const char *get_dent_type(int type)
-{
-	switch (type) {
-	case UBIFS_ITYPE_REG:
-		return "file";
-	case UBIFS_ITYPE_DIR:
-		return "dir";
-	case UBIFS_ITYPE_LNK:
-		return "symlink";
-	case UBIFS_ITYPE_BLK:
-		return "blkdev";
-	case UBIFS_ITYPE_CHR:
-		return "char dev";
-	case UBIFS_ITYPE_FIFO:
-		return "fifo";
-	case UBIFS_ITYPE_SOCK:
-		return "socket";
-	default:
-		return "unknown/invalid type";
-	}
-}
-
-const char *dbg_snprintf_key(const struct ubifs_info *c,
-			     const union ubifs_key *key, char *buffer, int len)
-{
-	char *p = buffer;
-	int type = key_type(c, key);
-
-	if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) {
-		switch (type) {
-		case UBIFS_INO_KEY:
-			len -= snprintf(p, len, "(%lu, %s)",
-					(unsigned long)key_inum(c, key),
-					get_key_type(type));
-			break;
-		case UBIFS_DENT_KEY:
-		case UBIFS_XENT_KEY:
-			len -= snprintf(p, len, "(%lu, %s, %#08x)",
-					(unsigned long)key_inum(c, key),
-					get_key_type(type), key_hash(c, key));
-			break;
-		case UBIFS_DATA_KEY:
-			len -= snprintf(p, len, "(%lu, %s, %u)",
-					(unsigned long)key_inum(c, key),
-					get_key_type(type), key_block(c, key));
-			break;
-		case UBIFS_TRUN_KEY:
-			len -= snprintf(p, len, "(%lu, %s)",
-					(unsigned long)key_inum(c, key),
-					get_key_type(type));
-			break;
-		default:
-			len -= snprintf(p, len, "(bad key type: %#08x, %#08x)",
-					key->u32[0], key->u32[1]);
-		}
-	} else
-		len -= snprintf(p, len, "bad key format %d", c->key_fmt);
-	ubifs_assert(len > 0);
-	return p;
-}
-
-const char *dbg_ntype(int type)
-{
-	switch (type) {
-	case UBIFS_PAD_NODE:
-		return "padding node";
-	case UBIFS_SB_NODE:
-		return "superblock node";
-	case UBIFS_MST_NODE:
-		return "master node";
-	case UBIFS_REF_NODE:
-		return "reference node";
-	case UBIFS_INO_NODE:
-		return "inode node";
-	case UBIFS_DENT_NODE:
-		return "direntry node";
-	case UBIFS_XENT_NODE:
-		return "xentry node";
-	case UBIFS_DATA_NODE:
-		return "data node";
-	case UBIFS_TRUN_NODE:
-		return "truncate node";
-	case UBIFS_IDX_NODE:
-		return "indexing node";
-	case UBIFS_CS_NODE:
-		return "commit start node";
-	case UBIFS_ORPH_NODE:
-		return "orphan node";
-	default:
-		return "unknown node";
-	}
-}
-
-static const char *dbg_gtype(int type)
-{
-	switch (type) {
-	case UBIFS_NO_NODE_GROUP:
-		return "no node group";
-	case UBIFS_IN_NODE_GROUP:
-		return "in node group";
-	case UBIFS_LAST_OF_NODE_GROUP:
-		return "last of node group";
-	default:
-		return "unknown";
-	}
-}
-
-const char *dbg_cstate(int cmt_state)
-{
-	switch (cmt_state) {
-	case COMMIT_RESTING:
-		return "commit resting";
-	case COMMIT_BACKGROUND:
-		return "background commit requested";
-	case COMMIT_REQUIRED:
-		return "commit required";
-	case COMMIT_RUNNING_BACKGROUND:
-		return "BACKGROUND commit running";
-	case COMMIT_RUNNING_REQUIRED:
-		return "commit running and required";
-	case COMMIT_BROKEN:
-		return "broken commit";
-	default:
-		return "unknown commit state";
-	}
-}
-
-const char *dbg_jhead(int jhead)
-{
-	switch (jhead) {
-	case GCHD:
-		return "0 (GC)";
-	case BASEHD:
-		return "1 (base)";
-	case DATAHD:
-		return "2 (data)";
-	default:
-		return "unknown journal head";
-	}
-}
-
-static void dump_ch(const struct ubifs_ch *ch)
-{
-	printk(KERN_ERR "\tmagic          %#x\n", le32_to_cpu(ch->magic));
-	printk(KERN_ERR "\tcrc            %#x\n", le32_to_cpu(ch->crc));
-	printk(KERN_ERR "\tnode_type      %d (%s)\n", ch->node_type,
-	       dbg_ntype(ch->node_type));
-	printk(KERN_ERR "\tgroup_type     %d (%s)\n", ch->group_type,
-	       dbg_gtype(ch->group_type));
-	printk(KERN_ERR "\tsqnum          %llu\n",
-	       (unsigned long long)le64_to_cpu(ch->sqnum));
-	printk(KERN_ERR "\tlen            %u\n", le32_to_cpu(ch->len));
-}
-
-void dbg_dump_inode(struct ubifs_info *c, const struct inode *inode)
-{
-	const struct ubifs_inode *ui = ubifs_inode(inode);
-	struct qstr nm = { .name = NULL };
-	union ubifs_key key;
-	struct ubifs_dent_node *dent, *pdent = NULL;
-	int count = 2;
-
-	printk(KERN_ERR "Dump in-memory inode:");
-	printk(KERN_ERR "\tinode          %lu\n", inode->i_ino);
-	printk(KERN_ERR "\tsize           %llu\n",
-	       (unsigned long long)i_size_read(inode));
-	printk(KERN_ERR "\tnlink          %u\n", inode->i_nlink);
-	printk(KERN_ERR "\tuid            %u\n", (unsigned int)inode->i_uid);
-	printk(KERN_ERR "\tgid            %u\n", (unsigned int)inode->i_gid);
-	printk(KERN_ERR "\tatime          %u.%u\n",
-	       (unsigned int)inode->i_atime.tv_sec,
-	       (unsigned int)inode->i_atime.tv_nsec);
-	printk(KERN_ERR "\tmtime          %u.%u\n",
-	       (unsigned int)inode->i_mtime.tv_sec,
-	       (unsigned int)inode->i_mtime.tv_nsec);
-	printk(KERN_ERR "\tctime          %u.%u\n",
-	       (unsigned int)inode->i_ctime.tv_sec,
-	       (unsigned int)inode->i_ctime.tv_nsec);
-	printk(KERN_ERR "\tcreat_sqnum    %llu\n", ui->creat_sqnum);
-	printk(KERN_ERR "\txattr_size     %u\n", ui->xattr_size);
-	printk(KERN_ERR "\txattr_cnt      %u\n", ui->xattr_cnt);
-	printk(KERN_ERR "\txattr_names    %u\n", ui->xattr_names);
-	printk(KERN_ERR "\tdirty          %u\n", ui->dirty);
-	printk(KERN_ERR "\txattr          %u\n", ui->xattr);
-	printk(KERN_ERR "\tbulk_read      %u\n", ui->xattr);
-	printk(KERN_ERR "\tsynced_i_size  %llu\n",
-	       (unsigned long long)ui->synced_i_size);
-	printk(KERN_ERR "\tui_size        %llu\n",
-	       (unsigned long long)ui->ui_size);
-	printk(KERN_ERR "\tflags          %d\n", ui->flags);
-	printk(KERN_ERR "\tcompr_type     %d\n", ui->compr_type);
-	printk(KERN_ERR "\tlast_page_read %lu\n", ui->last_page_read);
-	printk(KERN_ERR "\tread_in_a_row  %lu\n", ui->read_in_a_row);
-	printk(KERN_ERR "\tdata_len       %d\n", ui->data_len);
-
-	if (!S_ISDIR(inode->i_mode))
-		return;
-
-	printk(KERN_ERR "List of directory entries:\n");
-	ubifs_assert(!mutex_is_locked(&c->tnc_mutex));
-
-	lowest_dent_key(c, &key, inode->i_ino);
-	while (1) {
-		dent = ubifs_tnc_next_ent(c, &key, &nm);
-		if (IS_ERR(dent)) {
-			if (PTR_ERR(dent) != -ENOENT)
-				printk(KERN_ERR "error %ld\n", PTR_ERR(dent));
-			break;
-		}
-
-		printk(KERN_ERR "\t%d: %s (%s)\n",
-		       count++, dent->name, get_dent_type(dent->type));
-
-		nm.name = dent->name;
-		nm.len = le16_to_cpu(dent->nlen);
-		kfree(pdent);
-		pdent = dent;
-		key_read(c, &dent->key, &key);
-	}
-	kfree(pdent);
-}
-
-void dbg_dump_node(const struct ubifs_info *c, const void *node)
-{
-	int i, n;
-	union ubifs_key key;
-	const struct ubifs_ch *ch = node;
-	char key_buf[DBG_KEY_BUF_LEN];
-
-	if (dbg_is_tst_rcvry(c))
-		return;
-
-	/* If the magic is incorrect, just hexdump the first bytes */
-	if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC) {
-		printk(KERN_ERR "Not a node, first %zu bytes:", UBIFS_CH_SZ);
-		print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 32, 1,
-			       (void *)node, UBIFS_CH_SZ, 1);
-		return;
-	}
-
-	spin_lock(&dbg_lock);
-	dump_ch(node);
-
-	switch (ch->node_type) {
-	case UBIFS_PAD_NODE:
-	{
-		const struct ubifs_pad_node *pad = node;
-
-		printk(KERN_ERR "\tpad_len        %u\n",
-		       le32_to_cpu(pad->pad_len));
-		break;
-	}
-	case UBIFS_SB_NODE:
-	{
-		const struct ubifs_sb_node *sup = node;
-		unsigned int sup_flags = le32_to_cpu(sup->flags);
-
-		printk(KERN_ERR "\tkey_hash       %d (%s)\n",
-		       (int)sup->key_hash, get_key_hash(sup->key_hash));
-		printk(KERN_ERR "\tkey_fmt        %d (%s)\n",
-		       (int)sup->key_fmt, get_key_fmt(sup->key_fmt));
-		printk(KERN_ERR "\tflags          %#x\n", sup_flags);
-		printk(KERN_ERR "\t  big_lpt      %u\n",
-		       !!(sup_flags & UBIFS_FLG_BIGLPT));
-		printk(KERN_ERR "\t  space_fixup  %u\n",
-		       !!(sup_flags & UBIFS_FLG_SPACE_FIXUP));
-		printk(KERN_ERR "\tmin_io_size    %u\n",
-		       le32_to_cpu(sup->min_io_size));
-		printk(KERN_ERR "\tleb_size       %u\n",
-		       le32_to_cpu(sup->leb_size));
-		printk(KERN_ERR "\tleb_cnt        %u\n",
-		       le32_to_cpu(sup->leb_cnt));
-		printk(KERN_ERR "\tmax_leb_cnt    %u\n",
-		       le32_to_cpu(sup->max_leb_cnt));
-		printk(KERN_ERR "\tmax_bud_bytes  %llu\n",
-		       (unsigned long long)le64_to_cpu(sup->max_bud_bytes));
-		printk(KERN_ERR "\tlog_lebs       %u\n",
-		       le32_to_cpu(sup->log_lebs));
-		printk(KERN_ERR "\tlpt_lebs       %u\n",
-		       le32_to_cpu(sup->lpt_lebs));
-		printk(KERN_ERR "\torph_lebs      %u\n",
-		       le32_to_cpu(sup->orph_lebs));
-		printk(KERN_ERR "\tjhead_cnt      %u\n",
-		       le32_to_cpu(sup->jhead_cnt));
-		printk(KERN_ERR "\tfanout         %u\n",
-		       le32_to_cpu(sup->fanout));
-		printk(KERN_ERR "\tlsave_cnt      %u\n",
-		       le32_to_cpu(sup->lsave_cnt));
-		printk(KERN_ERR "\tdefault_compr  %u\n",
-		       (int)le16_to_cpu(sup->default_compr));
-		printk(KERN_ERR "\trp_size        %llu\n",
-		       (unsigned long long)le64_to_cpu(sup->rp_size));
-		printk(KERN_ERR "\trp_uid         %u\n",
-		       le32_to_cpu(sup->rp_uid));
-		printk(KERN_ERR "\trp_gid         %u\n",
-		       le32_to_cpu(sup->rp_gid));
-		printk(KERN_ERR "\tfmt_version    %u\n",
-		       le32_to_cpu(sup->fmt_version));
-		printk(KERN_ERR "\ttime_gran      %u\n",
-		       le32_to_cpu(sup->time_gran));
-		printk(KERN_ERR "\tUUID           %pUB\n",
-		       sup->uuid);
-		break;
-	}
-	case UBIFS_MST_NODE:
-	{
-		const struct ubifs_mst_node *mst = node;
-
-		printk(KERN_ERR "\thighest_inum   %llu\n",
-		       (unsigned long long)le64_to_cpu(mst->highest_inum));
-		printk(KERN_ERR "\tcommit number  %llu\n",
-		       (unsigned long long)le64_to_cpu(mst->cmt_no));
-		printk(KERN_ERR "\tflags          %#x\n",
-		       le32_to_cpu(mst->flags));
-		printk(KERN_ERR "\tlog_lnum       %u\n",
-		       le32_to_cpu(mst->log_lnum));
-		printk(KERN_ERR "\troot_lnum      %u\n",
-		       le32_to_cpu(mst->root_lnum));
-		printk(KERN_ERR "\troot_offs      %u\n",
-		       le32_to_cpu(mst->root_offs));
-		printk(KERN_ERR "\troot_len       %u\n",
-		       le32_to_cpu(mst->root_len));
-		printk(KERN_ERR "\tgc_lnum        %u\n",
-		       le32_to_cpu(mst->gc_lnum));
-		printk(KERN_ERR "\tihead_lnum     %u\n",
-		       le32_to_cpu(mst->ihead_lnum));
-		printk(KERN_ERR "\tihead_offs     %u\n",
-		       le32_to_cpu(mst->ihead_offs));
-		printk(KERN_ERR "\tindex_size     %llu\n",
-		       (unsigned long long)le64_to_cpu(mst->index_size));
-		printk(KERN_ERR "\tlpt_lnum       %u\n",
-		       le32_to_cpu(mst->lpt_lnum));
-		printk(KERN_ERR "\tlpt_offs       %u\n",
-		       le32_to_cpu(mst->lpt_offs));
-		printk(KERN_ERR "\tnhead_lnum     %u\n",
-		       le32_to_cpu(mst->nhead_lnum));
-		printk(KERN_ERR "\tnhead_offs     %u\n",
-		       le32_to_cpu(mst->nhead_offs));
-		printk(KERN_ERR "\tltab_lnum      %u\n",
-		       le32_to_cpu(mst->ltab_lnum));
-		printk(KERN_ERR "\tltab_offs      %u\n",
-		       le32_to_cpu(mst->ltab_offs));
-		printk(KERN_ERR "\tlsave_lnum     %u\n",
-		       le32_to_cpu(mst->lsave_lnum));
-		printk(KERN_ERR "\tlsave_offs     %u\n",
-		       le32_to_cpu(mst->lsave_offs));
-		printk(KERN_ERR "\tlscan_lnum     %u\n",
-		       le32_to_cpu(mst->lscan_lnum));
-		printk(KERN_ERR "\tleb_cnt        %u\n",
-		       le32_to_cpu(mst->leb_cnt));
-		printk(KERN_ERR "\tempty_lebs     %u\n",
-		       le32_to_cpu(mst->empty_lebs));
-		printk(KERN_ERR "\tidx_lebs       %u\n",
-		       le32_to_cpu(mst->idx_lebs));
-		printk(KERN_ERR "\ttotal_free     %llu\n",
-		       (unsigned long long)le64_to_cpu(mst->total_free));
-		printk(KERN_ERR "\ttotal_dirty    %llu\n",
-		       (unsigned long long)le64_to_cpu(mst->total_dirty));
-		printk(KERN_ERR "\ttotal_used     %llu\n",
-		       (unsigned long long)le64_to_cpu(mst->total_used));
-		printk(KERN_ERR "\ttotal_dead     %llu\n",
-		       (unsigned long long)le64_to_cpu(mst->total_dead));
-		printk(KERN_ERR "\ttotal_dark     %llu\n",
-		       (unsigned long long)le64_to_cpu(mst->total_dark));
-		break;
-	}
-	case UBIFS_REF_NODE:
-	{
-		const struct ubifs_ref_node *ref = node;
-
-		printk(KERN_ERR "\tlnum           %u\n",
-		       le32_to_cpu(ref->lnum));
-		printk(KERN_ERR "\toffs           %u\n",
-		       le32_to_cpu(ref->offs));
-		printk(KERN_ERR "\tjhead          %u\n",
-		       le32_to_cpu(ref->jhead));
-		break;
-	}
-	case UBIFS_INO_NODE:
-	{
-		const struct ubifs_ino_node *ino = node;
-
-		key_read(c, &ino->key, &key);
-		printk(KERN_ERR "\tkey            %s\n",
-		       dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN));
-		printk(KERN_ERR "\tcreat_sqnum    %llu\n",
-		       (unsigned long long)le64_to_cpu(ino->creat_sqnum));
-		printk(KERN_ERR "\tsize           %llu\n",
-		       (unsigned long long)le64_to_cpu(ino->size));
-		printk(KERN_ERR "\tnlink          %u\n",
-		       le32_to_cpu(ino->nlink));
-		printk(KERN_ERR "\tatime          %lld.%u\n",
-		       (long long)le64_to_cpu(ino->atime_sec),
-		       le32_to_cpu(ino->atime_nsec));
-		printk(KERN_ERR "\tmtime          %lld.%u\n",
-		       (long long)le64_to_cpu(ino->mtime_sec),
-		       le32_to_cpu(ino->mtime_nsec));
-		printk(KERN_ERR "\tctime          %lld.%u\n",
-		       (long long)le64_to_cpu(ino->ctime_sec),
-		       le32_to_cpu(ino->ctime_nsec));
-		printk(KERN_ERR "\tuid            %u\n",
-		       le32_to_cpu(ino->uid));
-		printk(KERN_ERR "\tgid            %u\n",
-		       le32_to_cpu(ino->gid));
-		printk(KERN_ERR "\tmode           %u\n",
-		       le32_to_cpu(ino->mode));
-		printk(KERN_ERR "\tflags          %#x\n",
-		       le32_to_cpu(ino->flags));
-		printk(KERN_ERR "\txattr_cnt      %u\n",
-		       le32_to_cpu(ino->xattr_cnt));
-		printk(KERN_ERR "\txattr_size     %u\n",
-		       le32_to_cpu(ino->xattr_size));
-		printk(KERN_ERR "\txattr_names    %u\n",
-		       le32_to_cpu(ino->xattr_names));
-		printk(KERN_ERR "\tcompr_type     %#x\n",
-		       (int)le16_to_cpu(ino->compr_type));
-		printk(KERN_ERR "\tdata len       %u\n",
-		       le32_to_cpu(ino->data_len));
-		break;
-	}
-	case UBIFS_DENT_NODE:
-	case UBIFS_XENT_NODE:
-	{
-		const struct ubifs_dent_node *dent = node;
-		int nlen = le16_to_cpu(dent->nlen);
-
-		key_read(c, &dent->key, &key);
-		printk(KERN_ERR "\tkey            %s\n",
-		       dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN));
-		printk(KERN_ERR "\tinum           %llu\n",
-		       (unsigned long long)le64_to_cpu(dent->inum));
-		printk(KERN_ERR "\ttype           %d\n", (int)dent->type);
-		printk(KERN_ERR "\tnlen           %d\n", nlen);
-		printk(KERN_ERR "\tname           ");
-
-		if (nlen > UBIFS_MAX_NLEN)
-			printk(KERN_ERR "(bad name length, not printing, "
-					  "bad or corrupted node)");
-		else {
-			for (i = 0; i < nlen && dent->name[i]; i++)
-				printk(KERN_CONT "%c", dent->name[i]);
-		}
-		printk(KERN_CONT "\n");
-
-		break;
-	}
-	case UBIFS_DATA_NODE:
-	{
-		const struct ubifs_data_node *dn = node;
-		int dlen = le32_to_cpu(ch->len) - UBIFS_DATA_NODE_SZ;
-
-		key_read(c, &dn->key, &key);
-		printk(KERN_ERR "\tkey            %s\n",
-		       dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN));
-		printk(KERN_ERR "\tsize           %u\n",
-		       le32_to_cpu(dn->size));
-		printk(KERN_ERR "\tcompr_typ      %d\n",
-		       (int)le16_to_cpu(dn->compr_type));
-		printk(KERN_ERR "\tdata size      %d\n",
-		       dlen);
-		printk(KERN_ERR "\tdata:\n");
-		print_hex_dump(KERN_ERR, "\t", DUMP_PREFIX_OFFSET, 32, 1,
-			       (void *)&dn->data, dlen, 0);
-		break;
-	}
-	case UBIFS_TRUN_NODE:
-	{
-		const struct ubifs_trun_node *trun = node;
-
-		printk(KERN_ERR "\tinum           %u\n",
-		       le32_to_cpu(trun->inum));
-		printk(KERN_ERR "\told_size       %llu\n",
-		       (unsigned long long)le64_to_cpu(trun->old_size));
-		printk(KERN_ERR "\tnew_size       %llu\n",
-		       (unsigned long long)le64_to_cpu(trun->new_size));
-		break;
-	}
-	case UBIFS_IDX_NODE:
-	{
-		const struct ubifs_idx_node *idx = node;
-
-		n = le16_to_cpu(idx->child_cnt);
-		printk(KERN_ERR "\tchild_cnt      %d\n", n);
-		printk(KERN_ERR "\tlevel          %d\n",
-		       (int)le16_to_cpu(idx->level));
-		printk(KERN_ERR "\tBranches:\n");
-
-		for (i = 0; i < n && i < c->fanout - 1; i++) {
-			const struct ubifs_branch *br;
-
-			br = ubifs_idx_branch(c, idx, i);
-			key_read(c, &br->key, &key);
-			printk(KERN_ERR "\t%d: LEB %d:%d len %d key %s\n",
-			       i, le32_to_cpu(br->lnum), le32_to_cpu(br->offs),
-			       le32_to_cpu(br->len),
-			       dbg_snprintf_key(c, &key, key_buf,
-						DBG_KEY_BUF_LEN));
-		}
-		break;
-	}
-	case UBIFS_CS_NODE:
-		break;
-	case UBIFS_ORPH_NODE:
-	{
-		const struct ubifs_orph_node *orph = node;
-
-		printk(KERN_ERR "\tcommit number  %llu\n",
-		       (unsigned long long)
-				le64_to_cpu(orph->cmt_no) & LLONG_MAX);
-		printk(KERN_ERR "\tlast node flag %llu\n",
-		       (unsigned long long)(le64_to_cpu(orph->cmt_no)) >> 63);
-		n = (le32_to_cpu(ch->len) - UBIFS_ORPH_NODE_SZ) >> 3;
-		printk(KERN_ERR "\t%d orphan inode numbers:\n", n);
-		for (i = 0; i < n; i++)
-			printk(KERN_ERR "\t  ino %llu\n",
-			       (unsigned long long)le64_to_cpu(orph->inos[i]));
-		break;
-	}
-	default:
-		printk(KERN_ERR "node type %d was not recognized\n",
-		       (int)ch->node_type);
-	}
-	spin_unlock(&dbg_lock);
-}
-
-void dbg_dump_budget_req(const struct ubifs_budget_req *req)
-{
-	spin_lock(&dbg_lock);
-	printk(KERN_ERR "Budgeting request: new_ino %d, dirtied_ino %d\n",
-	       req->new_ino, req->dirtied_ino);
-	printk(KERN_ERR "\tnew_ino_d   %d, dirtied_ino_d %d\n",
-	       req->new_ino_d, req->dirtied_ino_d);
-	printk(KERN_ERR "\tnew_page    %d, dirtied_page %d\n",
-	       req->new_page, req->dirtied_page);
-	printk(KERN_ERR "\tnew_dent    %d, mod_dent     %d\n",
-	       req->new_dent, req->mod_dent);
-	printk(KERN_ERR "\tidx_growth  %d\n", req->idx_growth);
-	printk(KERN_ERR "\tdata_growth %d dd_growth     %d\n",
-	       req->data_growth, req->dd_growth);
-	spin_unlock(&dbg_lock);
-}
-
-void dbg_dump_lstats(const struct ubifs_lp_stats *lst)
-{
-	spin_lock(&dbg_lock);
-	printk(KERN_ERR "(pid %d) Lprops statistics: empty_lebs %d, "
-	       "idx_lebs  %d\n", current->pid, lst->empty_lebs, lst->idx_lebs);
-	printk(KERN_ERR "\ttaken_empty_lebs %d, total_free %lld, "
-	       "total_dirty %lld\n", lst->taken_empty_lebs, lst->total_free,
-	       lst->total_dirty);
-	printk(KERN_ERR "\ttotal_used %lld, total_dark %lld, "
-	       "total_dead %lld\n", lst->total_used, lst->total_dark,
-	       lst->total_dead);
-	spin_unlock(&dbg_lock);
-}
-
-void dbg_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi)
-{
-	int i;
-	struct rb_node *rb;
-	struct ubifs_bud *bud;
-	struct ubifs_gced_idx_leb *idx_gc;
-	long long available, outstanding, free;
-
-	spin_lock(&c->space_lock);
-	spin_lock(&dbg_lock);
-	printk(KERN_ERR "(pid %d) Budgeting info: data budget sum %lld, "
-	       "total budget sum %lld\n", current->pid,
-	       bi->data_growth + bi->dd_growth,
-	       bi->data_growth + bi->dd_growth + bi->idx_growth);
-	printk(KERN_ERR "\tbudg_data_growth %lld, budg_dd_growth %lld, "
-	       "budg_idx_growth %lld\n", bi->data_growth, bi->dd_growth,
-	       bi->idx_growth);
-	printk(KERN_ERR "\tmin_idx_lebs %d, old_idx_sz %llu, "
-	       "uncommitted_idx %lld\n", bi->min_idx_lebs, bi->old_idx_sz,
-	       bi->uncommitted_idx);
-	printk(KERN_ERR "\tpage_budget %d, inode_budget %d, dent_budget %d\n",
-	       bi->page_budget, bi->inode_budget, bi->dent_budget);
-	printk(KERN_ERR "\tnospace %u, nospace_rp %u\n",
-	       bi->nospace, bi->nospace_rp);
-	printk(KERN_ERR "\tdark_wm %d, dead_wm %d, max_idx_node_sz %d\n",
-	       c->dark_wm, c->dead_wm, c->max_idx_node_sz);
-
-	if (bi != &c->bi)
-		/*
-		 * If we are dumping saved budgeting data, do not print
-		 * additional information which is about the current state, not
-		 * the old one which corresponded to the saved budgeting data.
-		 */
-		goto out_unlock;
-
-	printk(KERN_ERR "\tfreeable_cnt %d, calc_idx_sz %lld, idx_gc_cnt %d\n",
-	       c->freeable_cnt, c->calc_idx_sz, c->idx_gc_cnt);
-	printk(KERN_ERR "\tdirty_pg_cnt %ld, dirty_zn_cnt %ld, "
-	       "clean_zn_cnt %ld\n", atomic_long_read(&c->dirty_pg_cnt),
-	       atomic_long_read(&c->dirty_zn_cnt),
-	       atomic_long_read(&c->clean_zn_cnt));
-	printk(KERN_ERR "\tgc_lnum %d, ihead_lnum %d\n",
-	       c->gc_lnum, c->ihead_lnum);
-
-	/* If we are in R/O mode, journal heads do not exist */
-	if (c->jheads)
-		for (i = 0; i < c->jhead_cnt; i++)
-			printk(KERN_ERR "\tjhead %s\t LEB %d\n",
-			       dbg_jhead(c->jheads[i].wbuf.jhead),
-			       c->jheads[i].wbuf.lnum);
-	for (rb = rb_first(&c->buds); rb; rb = rb_next(rb)) {
-		bud = rb_entry(rb, struct ubifs_bud, rb);
-		printk(KERN_ERR "\tbud LEB %d\n", bud->lnum);
-	}
-	list_for_each_entry(bud, &c->old_buds, list)
-		printk(KERN_ERR "\told bud LEB %d\n", bud->lnum);
-	list_for_each_entry(idx_gc, &c->idx_gc, list)
-		printk(KERN_ERR "\tGC'ed idx LEB %d unmap %d\n",
-		       idx_gc->lnum, idx_gc->unmap);
-	printk(KERN_ERR "\tcommit state %d\n", c->cmt_state);
-
-	/* Print budgeting predictions */
-	available = ubifs_calc_available(c, c->bi.min_idx_lebs);
-	outstanding = c->bi.data_growth + c->bi.dd_growth;
-	free = ubifs_get_free_space_nolock(c);
-	printk(KERN_ERR "Budgeting predictions:\n");
-	printk(KERN_ERR "\tavailable: %lld, outstanding %lld, free %lld\n",
-	       available, outstanding, free);
-out_unlock:
-	spin_unlock(&dbg_lock);
-	spin_unlock(&c->space_lock);
-}
-
-void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp)
-{
-	int i, spc, dark = 0, dead = 0;
-	struct rb_node *rb;
-	struct ubifs_bud *bud;
-
-	spc = lp->free + lp->dirty;
-	if (spc < c->dead_wm)
-		dead = spc;
-	else
-		dark = ubifs_calc_dark(c, spc);
-
-	if (lp->flags & LPROPS_INDEX)
-		printk(KERN_ERR "LEB %-7d free %-8d dirty %-8d used %-8d "
-		       "free + dirty %-8d flags %#x (", lp->lnum, lp->free,
-		       lp->dirty, c->leb_size - spc, spc, lp->flags);
-	else
-		printk(KERN_ERR "LEB %-7d free %-8d dirty %-8d used %-8d "
-		       "free + dirty %-8d dark %-4d dead %-4d nodes fit %-3d "
-		       "flags %#-4x (", lp->lnum, lp->free, lp->dirty,
-		       c->leb_size - spc, spc, dark, dead,
-		       (int)(spc / UBIFS_MAX_NODE_SZ), lp->flags);
-
-	if (lp->flags & LPROPS_TAKEN) {
-		if (lp->flags & LPROPS_INDEX)
-			printk(KERN_CONT "index, taken");
-		else
-			printk(KERN_CONT "taken");
-	} else {
-		const char *s;
-
-		if (lp->flags & LPROPS_INDEX) {
-			switch (lp->flags & LPROPS_CAT_MASK) {
-			case LPROPS_DIRTY_IDX:
-				s = "dirty index";
-				break;
-			case LPROPS_FRDI_IDX:
-				s = "freeable index";
-				break;
-			default:
-				s = "index";
-			}
-		} else {
-			switch (lp->flags & LPROPS_CAT_MASK) {
-			case LPROPS_UNCAT:
-				s = "not categorized";
-				break;
-			case LPROPS_DIRTY:
-				s = "dirty";
-				break;
-			case LPROPS_FREE:
-				s = "free";
-				break;
-			case LPROPS_EMPTY:
-				s = "empty";
-				break;
-			case LPROPS_FREEABLE:
-				s = "freeable";
-				break;
-			default:
-				s = NULL;
-				break;
-			}
-		}
-		printk(KERN_CONT "%s", s);
-	}
-
-	for (rb = rb_first((struct rb_root *)&c->buds); rb; rb = rb_next(rb)) {
-		bud = rb_entry(rb, struct ubifs_bud, rb);
-		if (bud->lnum == lp->lnum) {
-			int head = 0;
-			for (i = 0; i < c->jhead_cnt; i++) {
-				/*
-				 * Note, if we are in R/O mode or in the middle
-				 * of mounting/re-mounting, the write-buffers do
-				 * not exist.
-				 */
-				if (c->jheads &&
-				    lp->lnum == c->jheads[i].wbuf.lnum) {
-					printk(KERN_CONT ", jhead %s",
-					       dbg_jhead(i));
-					head = 1;
-				}
-			}
-			if (!head)
-				printk(KERN_CONT ", bud of jhead %s",
-				       dbg_jhead(bud->jhead));
-		}
-	}
-	if (lp->lnum == c->gc_lnum)
-		printk(KERN_CONT ", GC LEB");
-	printk(KERN_CONT ")\n");
-}
-
-void dbg_dump_lprops(struct ubifs_info *c)
-{
-	int lnum, err;
-	struct ubifs_lprops lp;
-	struct ubifs_lp_stats lst;
-
-	printk(KERN_ERR "(pid %d) start dumping LEB properties\n",
-	       current->pid);
-	ubifs_get_lp_stats(c, &lst);
-	dbg_dump_lstats(&lst);
-
-	for (lnum = c->main_first; lnum < c->leb_cnt; lnum++) {
-		err = ubifs_read_one_lp(c, lnum, &lp);
-		if (err)
-			ubifs_err("cannot read lprops for LEB %d", lnum);
-
-		dbg_dump_lprop(c, &lp);
-	}
-	printk(KERN_ERR "(pid %d) finish dumping LEB properties\n",
-	       current->pid);
-}
-
-void dbg_dump_lpt_info(struct ubifs_info *c)
-{
-	int i;
-
-	spin_lock(&dbg_lock);
-	printk(KERN_ERR "(pid %d) dumping LPT information\n", current->pid);
-	printk(KERN_ERR "\tlpt_sz:        %lld\n", c->lpt_sz);
-	printk(KERN_ERR "\tpnode_sz:      %d\n", c->pnode_sz);
-	printk(KERN_ERR "\tnnode_sz:      %d\n", c->nnode_sz);
-	printk(KERN_ERR "\tltab_sz:       %d\n", c->ltab_sz);
-	printk(KERN_ERR "\tlsave_sz:      %d\n", c->lsave_sz);
-	printk(KERN_ERR "\tbig_lpt:       %d\n", c->big_lpt);
-	printk(KERN_ERR "\tlpt_hght:      %d\n", c->lpt_hght);
-	printk(KERN_ERR "\tpnode_cnt:     %d\n", c->pnode_cnt);
-	printk(KERN_ERR "\tnnode_cnt:     %d\n", c->nnode_cnt);
-	printk(KERN_ERR "\tdirty_pn_cnt:  %d\n", c->dirty_pn_cnt);
-	printk(KERN_ERR "\tdirty_nn_cnt:  %d\n", c->dirty_nn_cnt);
-	printk(KERN_ERR "\tlsave_cnt:     %d\n", c->lsave_cnt);
-	printk(KERN_ERR "\tspace_bits:    %d\n", c->space_bits);
-	printk(KERN_ERR "\tlpt_lnum_bits: %d\n", c->lpt_lnum_bits);
-	printk(KERN_ERR "\tlpt_offs_bits: %d\n", c->lpt_offs_bits);
-	printk(KERN_ERR "\tlpt_spc_bits:  %d\n", c->lpt_spc_bits);
-	printk(KERN_ERR "\tpcnt_bits:     %d\n", c->pcnt_bits);
-	printk(KERN_ERR "\tlnum_bits:     %d\n", c->lnum_bits);
-	printk(KERN_ERR "\tLPT root is at %d:%d\n", c->lpt_lnum, c->lpt_offs);
-	printk(KERN_ERR "\tLPT head is at %d:%d\n",
-	       c->nhead_lnum, c->nhead_offs);
-	printk(KERN_ERR "\tLPT ltab is at %d:%d\n",
-	       c->ltab_lnum, c->ltab_offs);
-	if (c->big_lpt)
-		printk(KERN_ERR "\tLPT lsave is at %d:%d\n",
-		       c->lsave_lnum, c->lsave_offs);
-	for (i = 0; i < c->lpt_lebs; i++)
-		printk(KERN_ERR "\tLPT LEB %d free %d dirty %d tgc %d "
-		       "cmt %d\n", i + c->lpt_first, c->ltab[i].free,
-		       c->ltab[i].dirty, c->ltab[i].tgc, c->ltab[i].cmt);
-	spin_unlock(&dbg_lock);
-}
-
-void dbg_dump_sleb(const struct ubifs_info *c,
-		   const struct ubifs_scan_leb *sleb, int offs)
-{
-	struct ubifs_scan_node *snod;
-
-	printk(KERN_ERR "(pid %d) start dumping scanned data from LEB %d:%d\n",
-	       current->pid, sleb->lnum, offs);
-
-	list_for_each_entry(snod, &sleb->nodes, list) {
-		cond_resched();
-		printk(KERN_ERR "Dumping node at LEB %d:%d len %d\n", sleb->lnum,
-		       snod->offs, snod->len);
-		dbg_dump_node(c, snod->node);
-	}
-}
-
-void dbg_dump_leb(const struct ubifs_info *c, int lnum)
-{
-	struct ubifs_scan_leb *sleb;
-	struct ubifs_scan_node *snod;
-	void *buf;
-
-	if (dbg_is_tst_rcvry(c))
-		return;
-
-	printk(KERN_ERR "(pid %d) start dumping LEB %d\n",
-	       current->pid, lnum);
-
-	buf = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
-	if (!buf) {
-		ubifs_err("cannot allocate memory for dumping LEB %d", lnum);
-		return;
-	}
-
-	sleb = ubifs_scan(c, lnum, 0, buf, 0);
-	if (IS_ERR(sleb)) {
-		ubifs_err("scan error %d", (int)PTR_ERR(sleb));
-		goto out;
-	}
-
-	printk(KERN_ERR "LEB %d has %d nodes ending at %d\n", lnum,
-	       sleb->nodes_cnt, sleb->endpt);
-
-	list_for_each_entry(snod, &sleb->nodes, list) {
-		cond_resched();
-		printk(KERN_ERR "Dumping node at LEB %d:%d len %d\n", lnum,
-		       snod->offs, snod->len);
-		dbg_dump_node(c, snod->node);
-	}
-
-	printk(KERN_ERR "(pid %d) finish dumping LEB %d\n",
-	       current->pid, lnum);
-	ubifs_scan_destroy(sleb);
-
-out:
-	vfree(buf);
-	return;
-}
-
-void dbg_dump_znode(const struct ubifs_info *c,
-		    const struct ubifs_znode *znode)
-{
-	int n;
-	const struct ubifs_zbranch *zbr;
-	char key_buf[DBG_KEY_BUF_LEN];
-
-	spin_lock(&dbg_lock);
-	if (znode->parent)
-		zbr = &znode->parent->zbranch[znode->iip];
-	else
-		zbr = &c->zroot;
-
-	printk(KERN_ERR "znode %p, LEB %d:%d len %d parent %p iip %d level %d"
-	       " child_cnt %d flags %lx\n", znode, zbr->lnum, zbr->offs,
-	       zbr->len, znode->parent, znode->iip, znode->level,
-	       znode->child_cnt, znode->flags);
-
-	if (znode->child_cnt <= 0 || znode->child_cnt > c->fanout) {
-		spin_unlock(&dbg_lock);
-		return;
-	}
-
-	printk(KERN_ERR "zbranches:\n");
-	for (n = 0; n < znode->child_cnt; n++) {
-		zbr = &znode->zbranch[n];
-		if (znode->level > 0)
-			printk(KERN_ERR "\t%d: znode %p LEB %d:%d len %d key "
-					  "%s\n", n, zbr->znode, zbr->lnum,
-					  zbr->offs, zbr->len,
-					  dbg_snprintf_key(c, &zbr->key,
-							   key_buf,
-							   DBG_KEY_BUF_LEN));
-		else
-			printk(KERN_ERR "\t%d: LNC %p LEB %d:%d len %d key "
-					  "%s\n", n, zbr->znode, zbr->lnum,
-					  zbr->offs, zbr->len,
-					  dbg_snprintf_key(c, &zbr->key,
-							   key_buf,
-							   DBG_KEY_BUF_LEN));
-	}
-	spin_unlock(&dbg_lock);
-}
-
-void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat)
-{
-	int i;
-
-	printk(KERN_ERR "(pid %d) start dumping heap cat %d (%d elements)\n",
-	       current->pid, cat, heap->cnt);
-	for (i = 0; i < heap->cnt; i++) {
-		struct ubifs_lprops *lprops = heap->arr[i];
-
-		printk(KERN_ERR "\t%d. LEB %d hpos %d free %d dirty %d "
-		       "flags %d\n", i, lprops->lnum, lprops->hpos,
-		       lprops->free, lprops->dirty, lprops->flags);
-	}
-	printk(KERN_ERR "(pid %d) finish dumping heap\n", current->pid);
-}
-
-void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
-		    struct ubifs_nnode *parent, int iip)
-{
-	int i;
-
-	printk(KERN_ERR "(pid %d) dumping pnode:\n", current->pid);
-	printk(KERN_ERR "\taddress %zx parent %zx cnext %zx\n",
-	       (size_t)pnode, (size_t)parent, (size_t)pnode->cnext);
-	printk(KERN_ERR "\tflags %lu iip %d level %d num %d\n",
-	       pnode->flags, iip, pnode->level, pnode->num);
-	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
-		struct ubifs_lprops *lp = &pnode->lprops[i];
-
-		printk(KERN_ERR "\t%d: free %d dirty %d flags %d lnum %d\n",
-		       i, lp->free, lp->dirty, lp->flags, lp->lnum);
-	}
-}
-
-void dbg_dump_tnc(struct ubifs_info *c)
-{
-	struct ubifs_znode *znode;
-	int level;
-
-	printk(KERN_ERR "\n");
-	printk(KERN_ERR "(pid %d) start dumping TNC tree\n", current->pid);
-	znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL);
-	level = znode->level;
-	printk(KERN_ERR "== Level %d ==\n", level);
-	while (znode) {
-		if (level != znode->level) {
-			level = znode->level;
-			printk(KERN_ERR "== Level %d ==\n", level);
-		}
-		dbg_dump_znode(c, znode);
-		znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);
-	}
-	printk(KERN_ERR "(pid %d) finish dumping TNC tree\n", current->pid);
-}
-
-static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode,
-		      void *priv)
-{
-	dbg_dump_znode(c, znode);
-	return 0;
-}
-
-/**
- * dbg_dump_index - dump the on-flash index.
- * @c: UBIFS file-system description object
- *
- * This function dumps whole UBIFS indexing B-tree, unlike 'dbg_dump_tnc()'
- * which dumps only in-memory znodes and does not read znodes which from flash.
- */
-void dbg_dump_index(struct ubifs_info *c)
-{
-	dbg_walk_index(c, NULL, dump_znode, NULL);
-}
-
-/**
- * dbg_save_space_info - save information about flash space.
- * @c: UBIFS file-system description object
- *
- * This function saves information about UBIFS free space, dirty space, etc, in
- * order to check it later.
- */
-void dbg_save_space_info(struct ubifs_info *c)
-{
-	struct ubifs_debug_info *d = c->dbg;
-	int freeable_cnt;
-
-	spin_lock(&c->space_lock);
-	memcpy(&d->saved_lst, &c->lst, sizeof(struct ubifs_lp_stats));
-	memcpy(&d->saved_bi, &c->bi, sizeof(struct ubifs_budg_info));
-	d->saved_idx_gc_cnt = c->idx_gc_cnt;
-
-	/*
-	 * We use a dirty hack here and zero out @c->freeable_cnt, because it
-	 * affects the free space calculations, and UBIFS might not know about
-	 * all freeable eraseblocks. Indeed, we know about freeable eraseblocks
-	 * only when we read their lprops, and we do this only lazily, upon the
-	 * need. So at any given point of time @c->freeable_cnt might be not
-	 * exactly accurate.
-	 *
-	 * Just one example about the issue we hit when we did not zero
-	 * @c->freeable_cnt.
-	 * 1. The file-system is mounted R/O, c->freeable_cnt is %0. We save the
-	 *    amount of free space in @d->saved_free
-	 * 2. We re-mount R/W, which makes UBIFS to read the "lsave"
-	 *    information from flash, where we cache LEBs from various
-	 *    categories ('ubifs_remount_fs()' -> 'ubifs_lpt_init()'
-	 *    -> 'lpt_init_wr()' -> 'read_lsave()' -> 'ubifs_lpt_lookup()'
-	 *    -> 'ubifs_get_pnode()' -> 'update_cats()'
-	 *    -> 'ubifs_add_to_cat()').
-	 * 3. Lsave contains a freeable eraseblock, and @c->freeable_cnt
-	 *    becomes %1.
-	 * 4. We calculate the amount of free space when the re-mount is
-	 *    finished in 'dbg_check_space_info()' and it does not match
-	 *    @d->saved_free.
-	 */
-	freeable_cnt = c->freeable_cnt;
-	c->freeable_cnt = 0;
-	d->saved_free = ubifs_get_free_space_nolock(c);
-	c->freeable_cnt = freeable_cnt;
-	spin_unlock(&c->space_lock);
-}
-
-/**
- * dbg_check_space_info - check flash space information.
- * @c: UBIFS file-system description object
- *
- * This function compares current flash space information with the information
- * which was saved when the 'dbg_save_space_info()' function was called.
- * Returns zero if the information has not changed, and %-EINVAL it it has
- * changed.
- */
-int dbg_check_space_info(struct ubifs_info *c)
-{
-	struct ubifs_debug_info *d = c->dbg;
-	struct ubifs_lp_stats lst;
-	long long free;
-	int freeable_cnt;
-
-	spin_lock(&c->space_lock);
-	freeable_cnt = c->freeable_cnt;
-	c->freeable_cnt = 0;
-	free = ubifs_get_free_space_nolock(c);
-	c->freeable_cnt = freeable_cnt;
-	spin_unlock(&c->space_lock);
-
-	if (free != d->saved_free) {
-		ubifs_err("free space changed from %lld to %lld",
-			  d->saved_free, free);
-		goto out;
-	}
-
-	return 0;
-
-out:
-	ubifs_msg("saved lprops statistics dump");
-	dbg_dump_lstats(&d->saved_lst);
-	ubifs_msg("saved budgeting info dump");
-	dbg_dump_budg(c, &d->saved_bi);
-	ubifs_msg("saved idx_gc_cnt %d", d->saved_idx_gc_cnt);
-	ubifs_msg("current lprops statistics dump");
-	ubifs_get_lp_stats(c, &lst);
-	dbg_dump_lstats(&lst);
-	ubifs_msg("current budgeting info dump");
-	dbg_dump_budg(c, &c->bi);
-	dump_stack();
-	return -EINVAL;
-}
-
-/**
- * dbg_check_synced_i_size - check synchronized inode size.
- * @c: UBIFS file-system description object
- * @inode: inode to check
- *
- * If inode is clean, synchronized inode size has to be equivalent to current
- * inode size. This function has to be called only for locked inodes (@i_mutex
- * has to be locked). Returns %0 if synchronized inode size if correct, and
- * %-EINVAL if not.
- */
-int dbg_check_synced_i_size(const struct ubifs_info *c, struct inode *inode)
-{
-	int err = 0;
-	struct ubifs_inode *ui = ubifs_inode(inode);
-
-	if (!dbg_is_chk_gen(c))
-		return 0;
-	if (!S_ISREG(inode->i_mode))
-		return 0;
-
-	mutex_lock(&ui->ui_mutex);
-	spin_lock(&ui->ui_lock);
-	if (ui->ui_size != ui->synced_i_size && !ui->dirty) {
-		ubifs_err("ui_size is %lld, synced_i_size is %lld, but inode "
-			  "is clean", ui->ui_size, ui->synced_i_size);
-		ubifs_err("i_ino %lu, i_mode %#x, i_size %lld", inode->i_ino,
-			  inode->i_mode, i_size_read(inode));
-		dbg_dump_stack();
-		err = -EINVAL;
-	}
-	spin_unlock(&ui->ui_lock);
-	mutex_unlock(&ui->ui_mutex);
-	return err;
-}
-
-/*
- * dbg_check_dir - check directory inode size and link count.
- * @c: UBIFS file-system description object
- * @dir: the directory to calculate size for
- * @size: the result is returned here
- *
- * This function makes sure that directory size and link count are correct.
- * Returns zero in case of success and a negative error code in case of
- * failure.
- *
- * Note, it is good idea to make sure the @dir->i_mutex is locked before
- * calling this function.
- */
-int dbg_check_dir(struct ubifs_info *c, const struct inode *dir)
-{
-	unsigned int nlink = 2;
-	union ubifs_key key;
-	struct ubifs_dent_node *dent, *pdent = NULL;
-	struct qstr nm = { .name = NULL };
-	loff_t size = UBIFS_INO_NODE_SZ;
-
-	if (!dbg_is_chk_gen(c))
-		return 0;
-
-	if (!S_ISDIR(dir->i_mode))
-		return 0;
-
-	lowest_dent_key(c, &key, dir->i_ino);
-	while (1) {
-		int err;
-
-		dent = ubifs_tnc_next_ent(c, &key, &nm);
-		if (IS_ERR(dent)) {
-			err = PTR_ERR(dent);
-			if (err == -ENOENT)
-				break;
-			return err;
-		}
-
-		nm.name = dent->name;
-		nm.len = le16_to_cpu(dent->nlen);
-		size += CALC_DENT_SIZE(nm.len);
-		if (dent->type == UBIFS_ITYPE_DIR)
-			nlink += 1;
-		kfree(pdent);
-		pdent = dent;
-		key_read(c, &dent->key, &key);
-	}
-	kfree(pdent);
-
-	if (i_size_read(dir) != size) {
-		ubifs_err("directory inode %lu has size %llu, "
-			  "but calculated size is %llu", dir->i_ino,
-			  (unsigned long long)i_size_read(dir),
-			  (unsigned long long)size);
-		dbg_dump_inode(c, dir);
-		dump_stack();
-		return -EINVAL;
-	}
-	if (dir->i_nlink != nlink) {
-		ubifs_err("directory inode %lu has nlink %u, but calculated "
-			  "nlink is %u", dir->i_ino, dir->i_nlink, nlink);
-		dbg_dump_inode(c, dir);
-		dump_stack();
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/**
- * dbg_check_key_order - make sure that colliding keys are properly ordered.
- * @c: UBIFS file-system description object
- * @zbr1: first zbranch
- * @zbr2: following zbranch
- *
- * In UBIFS indexing B-tree colliding keys has to be sorted in binary order of
- * names of the direntries/xentries which are referred by the keys. This
- * function reads direntries/xentries referred by @zbr1 and @zbr2 and makes
- * sure the name of direntry/xentry referred by @zbr1 is less than
- * direntry/xentry referred by @zbr2. Returns zero if this is true, %1 if not,
- * and a negative error code in case of failure.
- */
-static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1,
-			       struct ubifs_zbranch *zbr2)
-{
-	int err, nlen1, nlen2, cmp;
-	struct ubifs_dent_node *dent1, *dent2;
-	union ubifs_key key;
-	char key_buf[DBG_KEY_BUF_LEN];
-
-	ubifs_assert(!keys_cmp(c, &zbr1->key, &zbr2->key));
-	dent1 = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
-	if (!dent1)
-		return -ENOMEM;
-	dent2 = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
-	if (!dent2) {
-		err = -ENOMEM;
-		goto out_free;
-	}
-
-	err = ubifs_tnc_read_node(c, zbr1, dent1);
-	if (err)
-		goto out_free;
-	err = ubifs_validate_entry(c, dent1);
-	if (err)
-		goto out_free;
-
-	err = ubifs_tnc_read_node(c, zbr2, dent2);
-	if (err)
-		goto out_free;
-	err = ubifs_validate_entry(c, dent2);
-	if (err)
-		goto out_free;
-
-	/* Make sure node keys are the same as in zbranch */
-	err = 1;
-	key_read(c, &dent1->key, &key);
-	if (keys_cmp(c, &zbr1->key, &key)) {
-		dbg_err("1st entry at %d:%d has key %s", zbr1->lnum,
-			zbr1->offs, dbg_snprintf_key(c, &key, key_buf,
-						     DBG_KEY_BUF_LEN));
-		dbg_err("but it should have key %s according to tnc",
-			dbg_snprintf_key(c, &zbr1->key, key_buf,
-					 DBG_KEY_BUF_LEN));
-		dbg_dump_node(c, dent1);
-		goto out_free;
-	}
-
-	key_read(c, &dent2->key, &key);
-	if (keys_cmp(c, &zbr2->key, &key)) {
-		dbg_err("2nd entry at %d:%d has key %s", zbr1->lnum,
-			zbr1->offs, dbg_snprintf_key(c, &key, key_buf,
-						     DBG_KEY_BUF_LEN));
-		dbg_err("but it should have key %s according to tnc",
-			dbg_snprintf_key(c, &zbr2->key, key_buf,
-					 DBG_KEY_BUF_LEN));
-		dbg_dump_node(c, dent2);
-		goto out_free;
-	}
-
-	nlen1 = le16_to_cpu(dent1->nlen);
-	nlen2 = le16_to_cpu(dent2->nlen);
-
-	cmp = memcmp(dent1->name, dent2->name, min_t(int, nlen1, nlen2));
-	if (cmp < 0 || (cmp == 0 && nlen1 < nlen2)) {
-		err = 0;
-		goto out_free;
-	}
-	if (cmp == 0 && nlen1 == nlen2)
-		dbg_err("2 xent/dent nodes with the same name");
-	else
-		dbg_err("bad order of colliding key %s",
-			dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN));
-
-	ubifs_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs);
-	dbg_dump_node(c, dent1);
-	ubifs_msg("second node at %d:%d\n", zbr2->lnum, zbr2->offs);
-	dbg_dump_node(c, dent2);
-
-out_free:
-	kfree(dent2);
-	kfree(dent1);
-	return err;
-}
-
-/**
- * dbg_check_znode - check if znode is all right.
- * @c: UBIFS file-system description object
- * @zbr: zbranch which points to this znode
- *
- * This function makes sure that znode referred to by @zbr is all right.
- * Returns zero if it is, and %-EINVAL if it is not.
- */
-static int dbg_check_znode(struct ubifs_info *c, struct ubifs_zbranch *zbr)
-{
-	struct ubifs_znode *znode = zbr->znode;
-	struct ubifs_znode *zp = znode->parent;
-	int n, err, cmp;
-
-	if (znode->child_cnt <= 0 || znode->child_cnt > c->fanout) {
-		err = 1;
-		goto out;
-	}
-	if (znode->level < 0) {
-		err = 2;
-		goto out;
-	}
-	if (znode->iip < 0 || znode->iip >= c->fanout) {
-		err = 3;
-		goto out;
-	}
-
-	if (zbr->len == 0)
-		/* Only dirty zbranch may have no on-flash nodes */
-		if (!ubifs_zn_dirty(znode)) {
-			err = 4;
-			goto out;
-		}
-
-	if (ubifs_zn_dirty(znode)) {
-		/*
-		 * If znode is dirty, its parent has to be dirty as well. The
-		 * order of the operation is important, so we have to have
-		 * memory barriers.
-		 */
-		smp_mb();
-		if (zp && !ubifs_zn_dirty(zp)) {
-			/*
-			 * The dirty flag is atomic and is cleared outside the
-			 * TNC mutex, so znode's dirty flag may now have
-			 * been cleared. The child is always cleared before the
-			 * parent, so we just need to check again.
-			 */
-			smp_mb();
-			if (ubifs_zn_dirty(znode)) {
-				err = 5;
-				goto out;
-			}
-		}
-	}
-
-	if (zp) {
-		const union ubifs_key *min, *max;
-
-		if (znode->level != zp->level - 1) {
-			err = 6;
-			goto out;
-		}
-
-		/* Make sure the 'parent' pointer in our znode is correct */
-		err = ubifs_search_zbranch(c, zp, &zbr->key, &n);
-		if (!err) {
-			/* This zbranch does not exist in the parent */
-			err = 7;
-			goto out;
-		}
-
-		if (znode->iip >= zp->child_cnt) {
-			err = 8;
-			goto out;
-		}
-
-		if (znode->iip != n) {
-			/* This may happen only in case of collisions */
-			if (keys_cmp(c, &zp->zbranch[n].key,
-				     &zp->zbranch[znode->iip].key)) {
-				err = 9;
-				goto out;
-			}
-			n = znode->iip;
-		}
-
-		/*
-		 * Make sure that the first key in our znode is greater than or
-		 * equal to the key in the pointing zbranch.
-		 */
-		min = &zbr->key;
-		cmp = keys_cmp(c, min, &znode->zbranch[0].key);
-		if (cmp == 1) {
-			err = 10;
-			goto out;
-		}
-
-		if (n + 1 < zp->child_cnt) {
-			max = &zp->zbranch[n + 1].key;
-
-			/*
-			 * Make sure the last key in our znode is less or
-			 * equivalent than the key in the zbranch which goes
-			 * after our pointing zbranch.
-			 */
-			cmp = keys_cmp(c, max,
-				&znode->zbranch[znode->child_cnt - 1].key);
-			if (cmp == -1) {
-				err = 11;
-				goto out;
-			}
-		}
-	} else {
-		/* This may only be root znode */
-		if (zbr != &c->zroot) {
-			err = 12;
-			goto out;
-		}
-	}
-
-	/*
-	 * Make sure that next key is greater or equivalent then the previous
-	 * one.
-	 */
-	for (n = 1; n < znode->child_cnt; n++) {
-		cmp = keys_cmp(c, &znode->zbranch[n - 1].key,
-			       &znode->zbranch[n].key);
-		if (cmp > 0) {
-			err = 13;
-			goto out;
-		}
-		if (cmp == 0) {
-			/* This can only be keys with colliding hash */
-			if (!is_hash_key(c, &znode->zbranch[n].key)) {
-				err = 14;
-				goto out;
-			}
-
-			if (znode->level != 0 || c->replaying)
-				continue;
-
-			/*
-			 * Colliding keys should follow binary order of
-			 * corresponding xentry/dentry names.
-			 */
-			err = dbg_check_key_order(c, &znode->zbranch[n - 1],
-						  &znode->zbranch[n]);
-			if (err < 0)
-				return err;
-			if (err) {
-				err = 15;
-				goto out;
-			}
-		}
-	}
-
-	for (n = 0; n < znode->child_cnt; n++) {
-		if (!znode->zbranch[n].znode &&
-		    (znode->zbranch[n].lnum == 0 ||
-		     znode->zbranch[n].len == 0)) {
-			err = 16;
-			goto out;
-		}
-
-		if (znode->zbranch[n].lnum != 0 &&
-		    znode->zbranch[n].len == 0) {
-			err = 17;
-			goto out;
-		}
-
-		if (znode->zbranch[n].lnum == 0 &&
-		    znode->zbranch[n].len != 0) {
-			err = 18;
-			goto out;
-		}
-
-		if (znode->zbranch[n].lnum == 0 &&
-		    znode->zbranch[n].offs != 0) {
-			err = 19;
-			goto out;
-		}
-
-		if (znode->level != 0 && znode->zbranch[n].znode)
-			if (znode->zbranch[n].znode->parent != znode) {
-				err = 20;
-				goto out;
-			}
-	}
-
-	return 0;
-
-out:
-	ubifs_err("failed, error %d", err);
-	ubifs_msg("dump of the znode");
-	dbg_dump_znode(c, znode);
-	if (zp) {
-		ubifs_msg("dump of the parent znode");
-		dbg_dump_znode(c, zp);
-	}
-	dump_stack();
-	return -EINVAL;
-}
-
-/**
- * dbg_check_tnc - check TNC tree.
- * @c: UBIFS file-system description object
- * @extra: do extra checks that are possible at start commit
- *
- * This function traverses whole TNC tree and checks every znode. Returns zero
- * if everything is all right and %-EINVAL if something is wrong with TNC.
- */
-int dbg_check_tnc(struct ubifs_info *c, int extra)
-{
-	struct ubifs_znode *znode;
-	long clean_cnt = 0, dirty_cnt = 0;
-	int err, last;
-
-	if (!dbg_is_chk_index(c))
-		return 0;
-
-	ubifs_assert(mutex_is_locked(&c->tnc_mutex));
-	if (!c->zroot.znode)
-		return 0;
-
-	znode = ubifs_tnc_postorder_first(c->zroot.znode);
-	while (1) {
-		struct ubifs_znode *prev;
-		struct ubifs_zbranch *zbr;
-
-		if (!znode->parent)
-			zbr = &c->zroot;
-		else
-			zbr = &znode->parent->zbranch[znode->iip];
-
-		err = dbg_check_znode(c, zbr);
-		if (err)
-			return err;
-
-		if (extra) {
-			if (ubifs_zn_dirty(znode))
-				dirty_cnt += 1;
-			else
-				clean_cnt += 1;
-		}
-
-		prev = znode;
-		znode = ubifs_tnc_postorder_next(znode);
-		if (!znode)
-			break;
-
-		/*
-		 * If the last key of this znode is equivalent to the first key
-		 * of the next znode (collision), then check order of the keys.
-		 */
-		last = prev->child_cnt - 1;
-		if (prev->level == 0 && znode->level == 0 && !c->replaying &&
-		    !keys_cmp(c, &prev->zbranch[last].key,
-			      &znode->zbranch[0].key)) {
-			err = dbg_check_key_order(c, &prev->zbranch[last],
-						  &znode->zbranch[0]);
-			if (err < 0)
-				return err;
-			if (err) {
-				ubifs_msg("first znode");
-				dbg_dump_znode(c, prev);
-				ubifs_msg("second znode");
-				dbg_dump_znode(c, znode);
-				return -EINVAL;
-			}
-		}
-	}
-
-	if (extra) {
-		if (clean_cnt != atomic_long_read(&c->clean_zn_cnt)) {
-			ubifs_err("incorrect clean_zn_cnt %ld, calculated %ld",
-				  atomic_long_read(&c->clean_zn_cnt),
-				  clean_cnt);
-			return -EINVAL;
-		}
-		if (dirty_cnt != atomic_long_read(&c->dirty_zn_cnt)) {
-			ubifs_err("incorrect dirty_zn_cnt %ld, calculated %ld",
-				  atomic_long_read(&c->dirty_zn_cnt),
-				  dirty_cnt);
-			return -EINVAL;
-		}
-	}
-
-	return 0;
-}
-
-/**
- * dbg_walk_index - walk the on-flash index.
- * @c: UBIFS file-system description object
- * @leaf_cb: called for each leaf node
- * @znode_cb: called for each indexing node
- * @priv: private data which is passed to callbacks
- *
- * This function walks the UBIFS index and calls the @leaf_cb for each leaf
- * node and @znode_cb for each indexing node. Returns zero in case of success
- * and a negative error code in case of failure.
- *
- * It would be better if this function removed every znode it pulled to into
- * the TNC, so that the behavior more closely matched the non-debugging
- * behavior.
- */
-int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
-		   dbg_znode_callback znode_cb, void *priv)
-{
-	int err;
-	struct ubifs_zbranch *zbr;
-	struct ubifs_znode *znode, *child;
-
-	mutex_lock(&c->tnc_mutex);
-	/* If the root indexing node is not in TNC - pull it */
-	if (!c->zroot.znode) {
-		c->zroot.znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
-		if (IS_ERR(c->zroot.znode)) {
-			err = PTR_ERR(c->zroot.znode);
-			c->zroot.znode = NULL;
-			goto out_unlock;
-		}
-	}
-
-	/*
-	 * We are going to traverse the indexing tree in the postorder manner.
-	 * Go down and find the leftmost indexing node where we are going to
-	 * start from.
-	 */
-	znode = c->zroot.znode;
-	while (znode->level > 0) {
-		zbr = &znode->zbranch[0];
-		child = zbr->znode;
-		if (!child) {
-			child = ubifs_load_znode(c, zbr, znode, 0);
-			if (IS_ERR(child)) {
-				err = PTR_ERR(child);
-				goto out_unlock;
-			}
-			zbr->znode = child;
-		}
-
-		znode = child;
-	}
-
-	/* Iterate over all indexing nodes */
-	while (1) {
-		int idx;
-
-		cond_resched();
-
-		if (znode_cb) {
-			err = znode_cb(c, znode, priv);
-			if (err) {
-				ubifs_err("znode checking function returned "
-					  "error %d", err);
-				dbg_dump_znode(c, znode);
-				goto out_dump;
-			}
-		}
-		if (leaf_cb && znode->level == 0) {
-			for (idx = 0; idx < znode->child_cnt; idx++) {
-				zbr = &znode->zbranch[idx];
-				err = leaf_cb(c, zbr, priv);
-				if (err) {
-					ubifs_err("leaf checking function "
-						  "returned error %d, for leaf "
-						  "at LEB %d:%d",
-						  err, zbr->lnum, zbr->offs);
-					goto out_dump;
-				}
-			}
-		}
-
-		if (!znode->parent)
-			break;
-
-		idx = znode->iip + 1;
-		znode = znode->parent;
-		if (idx < znode->child_cnt) {
-			/* Switch to the next index in the parent */
-			zbr = &znode->zbranch[idx];
-			child = zbr->znode;
-			if (!child) {
-				child = ubifs_load_znode(c, zbr, znode, idx);
-				if (IS_ERR(child)) {
-					err = PTR_ERR(child);
-					goto out_unlock;
-				}
-				zbr->znode = child;
-			}
-			znode = child;
-		} else
-			/*
-			 * This is the last child, switch to the parent and
-			 * continue.
-			 */
-			continue;
-
-		/* Go to the lowest leftmost znode in the new sub-tree */
-		while (znode->level > 0) {
-			zbr = &znode->zbranch[0];
-			child = zbr->znode;
-			if (!child) {
-				child = ubifs_load_znode(c, zbr, znode, 0);
-				if (IS_ERR(child)) {
-					err = PTR_ERR(child);
-					goto out_unlock;
-				}
-				zbr->znode = child;
-			}
-			znode = child;
-		}
-	}
-
-	mutex_unlock(&c->tnc_mutex);
-	return 0;
-
-out_dump:
-	if (znode->parent)
-		zbr = &znode->parent->zbranch[znode->iip];
-	else
-		zbr = &c->zroot;
-	ubifs_msg("dump of znode at LEB %d:%d", zbr->lnum, zbr->offs);
-	dbg_dump_znode(c, znode);
-out_unlock:
-	mutex_unlock(&c->tnc_mutex);
-	return err;
-}
-
-/**
- * add_size - add znode size to partially calculated index size.
- * @c: UBIFS file-system description object
- * @znode: znode to add size for
- * @priv: partially calculated index size
- *
- * This is a helper function for 'dbg_check_idx_size()' which is called for
- * every indexing node and adds its size to the 'long long' variable pointed to
- * by @priv.
- */
-static int add_size(struct ubifs_info *c, struct ubifs_znode *znode, void *priv)
-{
-	long long *idx_size = priv;
-	int add;
-
-	add = ubifs_idx_node_sz(c, znode->child_cnt);
-	add = ALIGN(add, 8);
-	*idx_size += add;
-	return 0;
-}
-
-/**
- * dbg_check_idx_size - check index size.
- * @c: UBIFS file-system description object
- * @idx_size: size to check
- *
- * This function walks the UBIFS index, calculates its size and checks that the
- * size is equivalent to @idx_size. Returns zero in case of success and a
- * negative error code in case of failure.
- */
-int dbg_check_idx_size(struct ubifs_info *c, long long idx_size)
-{
-	int err;
-	long long calc = 0;
-
-	if (!dbg_is_chk_index(c))
-		return 0;
-
-	err = dbg_walk_index(c, NULL, add_size, &calc);
-	if (err) {
-		ubifs_err("error %d while walking the index", err);
-		return err;
-	}
-
-	if (calc != idx_size) {
-		ubifs_err("index size check failed: calculated size is %lld, "
-			  "should be %lld", calc, idx_size);
-		dump_stack();
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/**
- * struct fsck_inode - information about an inode used when checking the file-system.
- * @rb: link in the RB-tree of inodes
- * @inum: inode number
- * @mode: inode type, permissions, etc
- * @nlink: inode link count
- * @xattr_cnt: count of extended attributes
- * @references: how many directory/xattr entries refer this inode (calculated
- *              while walking the index)
- * @calc_cnt: for directory inode count of child directories
- * @size: inode size (read from on-flash inode)
- * @xattr_sz: summary size of all extended attributes (read from on-flash
- *            inode)
- * @calc_sz: for directories calculated directory size
- * @calc_xcnt: count of extended attributes
- * @calc_xsz: calculated summary size of all extended attributes
- * @xattr_nms: sum of lengths of all extended attribute names belonging to this
- *             inode (read from on-flash inode)
- * @calc_xnms: calculated sum of lengths of all extended attribute names
- */
-struct fsck_inode {
-	struct rb_node rb;
-	ino_t inum;
-	umode_t mode;
-	unsigned int nlink;
-	unsigned int xattr_cnt;
-	int references;
-	int calc_cnt;
-	long long size;
-	unsigned int xattr_sz;
-	long long calc_sz;
-	long long calc_xcnt;
-	long long calc_xsz;
-	unsigned int xattr_nms;
-	long long calc_xnms;
-};
-
-/**
- * struct fsck_data - private FS checking information.
- * @inodes: RB-tree of all inodes (contains @struct fsck_inode objects)
- */
-struct fsck_data {
-	struct rb_root inodes;
-};
-
-/**
- * add_inode - add inode information to RB-tree of inodes.
- * @c: UBIFS file-system description object
- * @fsckd: FS checking information
- * @ino: raw UBIFS inode to add
- *
- * This is a helper function for 'check_leaf()' which adds information about
- * inode @ino to the RB-tree of inodes. Returns inode information pointer in
- * case of success and a negative error code in case of failure.
- */
-static struct fsck_inode *add_inode(struct ubifs_info *c,
-				    struct fsck_data *fsckd,
-				    struct ubifs_ino_node *ino)
-{
-	struct rb_node **p, *parent = NULL;
-	struct fsck_inode *fscki;
-	ino_t inum = key_inum_flash(c, &ino->key);
-	struct inode *inode;
-	struct ubifs_inode *ui;
-
-	p = &fsckd->inodes.rb_node;
-	while (*p) {
-		parent = *p;
-		fscki = rb_entry(parent, struct fsck_inode, rb);
-		if (inum < fscki->inum)
-			p = &(*p)->rb_left;
-		else if (inum > fscki->inum)
-			p = &(*p)->rb_right;
-		else
-			return fscki;
-	}
-
-	if (inum > c->highest_inum) {
-		ubifs_err("too high inode number, max. is %lu",
-			  (unsigned long)c->highest_inum);
-		return ERR_PTR(-EINVAL);
-	}
-
-	fscki = kzalloc(sizeof(struct fsck_inode), GFP_NOFS);
-	if (!fscki)
-		return ERR_PTR(-ENOMEM);
-
-	inode = ilookup(c->vfs_sb, inum);
-
-	fscki->inum = inum;
-	/*
-	 * If the inode is present in the VFS inode cache, use it instead of
-	 * the on-flash inode which might be out-of-date. E.g., the size might
-	 * be out-of-date. If we do not do this, the following may happen, for
-	 * example:
-	 *   1. A power cut happens
-	 *   2. We mount the file-system R/O, the replay process fixes up the
-	 *      inode size in the VFS cache, but on on-flash.
-	 *   3. 'check_leaf()' fails because it hits a data node beyond inode
-	 *      size.
-	 */
-	if (!inode) {
-		fscki->nlink = le32_to_cpu(ino->nlink);
-		fscki->size = le64_to_cpu(ino->size);
-		fscki->xattr_cnt = le32_to_cpu(ino->xattr_cnt);
-		fscki->xattr_sz = le32_to_cpu(ino->xattr_size);
-		fscki->xattr_nms = le32_to_cpu(ino->xattr_names);
-		fscki->mode = le32_to_cpu(ino->mode);
-	} else {
-		ui = ubifs_inode(inode);
-		fscki->nlink = inode->i_nlink;
-		fscki->size = inode->i_size;
-		fscki->xattr_cnt = ui->xattr_cnt;
-		fscki->xattr_sz = ui->xattr_size;
-		fscki->xattr_nms = ui->xattr_names;
-		fscki->mode = inode->i_mode;
-		iput(inode);
-	}
-
-	if (S_ISDIR(fscki->mode)) {
-		fscki->calc_sz = UBIFS_INO_NODE_SZ;
-		fscki->calc_cnt = 2;
-	}
-
-	rb_link_node(&fscki->rb, parent, p);
-	rb_insert_color(&fscki->rb, &fsckd->inodes);
-
-	return fscki;
-}
-
-/**
- * search_inode - search inode in the RB-tree of inodes.
- * @fsckd: FS checking information
- * @inum: inode number to search
- *
- * This is a helper function for 'check_leaf()' which searches inode @inum in
- * the RB-tree of inodes and returns an inode information pointer or %NULL if
- * the inode was not found.
- */
-static struct fsck_inode *search_inode(struct fsck_data *fsckd, ino_t inum)
-{
-	struct rb_node *p;
-	struct fsck_inode *fscki;
-
-	p = fsckd->inodes.rb_node;
-	while (p) {
-		fscki = rb_entry(p, struct fsck_inode, rb);
-		if (inum < fscki->inum)
-			p = p->rb_left;
-		else if (inum > fscki->inum)
-			p = p->rb_right;
-		else
-			return fscki;
-	}
-	return NULL;
-}
-
-/**
- * read_add_inode - read inode node and add it to RB-tree of inodes.
- * @c: UBIFS file-system description object
- * @fsckd: FS checking information
- * @inum: inode number to read
- *
- * This is a helper function for 'check_leaf()' which finds inode node @inum in
- * the index, reads it, and adds it to the RB-tree of inodes. Returns inode
- * information pointer in case of success and a negative error code in case of
- * failure.
- */
-static struct fsck_inode *read_add_inode(struct ubifs_info *c,
-					 struct fsck_data *fsckd, ino_t inum)
-{
-	int n, err;
-	union ubifs_key key;
-	struct ubifs_znode *znode;
-	struct ubifs_zbranch *zbr;
-	struct ubifs_ino_node *ino;
-	struct fsck_inode *fscki;
-
-	fscki = search_inode(fsckd, inum);
-	if (fscki)
-		return fscki;
-
-	ino_key_init(c, &key, inum);
-	err = ubifs_lookup_level0(c, &key, &znode, &n);
-	if (!err) {
-		ubifs_err("inode %lu not found in index", (unsigned long)inum);
-		return ERR_PTR(-ENOENT);
-	} else if (err < 0) {
-		ubifs_err("error %d while looking up inode %lu",
-			  err, (unsigned long)inum);
-		return ERR_PTR(err);
-	}
-
-	zbr = &znode->zbranch[n];
-	if (zbr->len < UBIFS_INO_NODE_SZ) {
-		ubifs_err("bad node %lu node length %d",
-			  (unsigned long)inum, zbr->len);
-		return ERR_PTR(-EINVAL);
-	}
-
-	ino = kmalloc(zbr->len, GFP_NOFS);
-	if (!ino)
-		return ERR_PTR(-ENOMEM);
-
-	err = ubifs_tnc_read_node(c, zbr, ino);
-	if (err) {
-		ubifs_err("cannot read inode node at LEB %d:%d, error %d",
-			  zbr->lnum, zbr->offs, err);
-		kfree(ino);
-		return ERR_PTR(err);
-	}
-
-	fscki = add_inode(c, fsckd, ino);
-	kfree(ino);
-	if (IS_ERR(fscki)) {
-		ubifs_err("error %ld while adding inode %lu node",
-			  PTR_ERR(fscki), (unsigned long)inum);
-		return fscki;
-	}
-
-	return fscki;
-}
-
-/**
- * check_leaf - check leaf node.
- * @c: UBIFS file-system description object
- * @zbr: zbranch of the leaf node to check
- * @priv: FS checking information
- *
- * This is a helper function for 'dbg_check_filesystem()' which is called for
- * every single leaf node while walking the indexing tree. It checks that the
- * leaf node referred from the indexing tree exists, has correct CRC, and does
- * some other basic validation. This function is also responsible for building
- * an RB-tree of inodes - it adds all inodes into the RB-tree. It also
- * calculates reference count, size, etc for each inode in order to later
- * compare them to the information stored inside the inodes and detect possible
- * inconsistencies. Returns zero in case of success and a negative error code
- * in case of failure.
- */
-static int check_leaf(struct ubifs_info *c, struct ubifs_zbranch *zbr,
-		      void *priv)
-{
-	ino_t inum;
-	void *node;
-	struct ubifs_ch *ch;
-	int err, type = key_type(c, &zbr->key);
-	struct fsck_inode *fscki;
-
-	if (zbr->len < UBIFS_CH_SZ) {
-		ubifs_err("bad leaf length %d (LEB %d:%d)",
-			  zbr->len, zbr->lnum, zbr->offs);
-		return -EINVAL;
-	}
-
-	node = kmalloc(zbr->len, GFP_NOFS);
-	if (!node)
-		return -ENOMEM;
-
-	err = ubifs_tnc_read_node(c, zbr, node);
-	if (err) {
-		ubifs_err("cannot read leaf node at LEB %d:%d, error %d",
-			  zbr->lnum, zbr->offs, err);
-		goto out_free;
-	}
-
-	/* If this is an inode node, add it to RB-tree of inodes */
-	if (type == UBIFS_INO_KEY) {
-		fscki = add_inode(c, priv, node);
-		if (IS_ERR(fscki)) {
-			err = PTR_ERR(fscki);
-			ubifs_err("error %d while adding inode node", err);
-			goto out_dump;
-		}
-		goto out;
-	}
-
-	if (type != UBIFS_DENT_KEY && type != UBIFS_XENT_KEY &&
-	    type != UBIFS_DATA_KEY) {
-		ubifs_err("unexpected node type %d at LEB %d:%d",
-			  type, zbr->lnum, zbr->offs);
-		err = -EINVAL;
-		goto out_free;
-	}
-
-	ch = node;
-	if (le64_to_cpu(ch->sqnum) > c->max_sqnum) {
-		ubifs_err("too high sequence number, max. is %llu",
-			  c->max_sqnum);
-		err = -EINVAL;
-		goto out_dump;
-	}
-
-	if (type == UBIFS_DATA_KEY) {
-		long long blk_offs;
-		struct ubifs_data_node *dn = node;
-
-		/*
-		 * Search the inode node this data node belongs to and insert
-		 * it to the RB-tree of inodes.
-		 */
-		inum = key_inum_flash(c, &dn->key);
-		fscki = read_add_inode(c, priv, inum);
-		if (IS_ERR(fscki)) {
-			err = PTR_ERR(fscki);
-			ubifs_err("error %d while processing data node and "
-				  "trying to find inode node %lu",
-				  err, (unsigned long)inum);
-			goto out_dump;
-		}
-
-		/* Make sure the data node is within inode size */
-		blk_offs = key_block_flash(c, &dn->key);
-		blk_offs <<= UBIFS_BLOCK_SHIFT;
-		blk_offs += le32_to_cpu(dn->size);
-		if (blk_offs > fscki->size) {
-			ubifs_err("data node at LEB %d:%d is not within inode "
-				  "size %lld", zbr->lnum, zbr->offs,
-				  fscki->size);
-			err = -EINVAL;
-			goto out_dump;
-		}
-	} else {
-		int nlen;
-		struct ubifs_dent_node *dent = node;
-		struct fsck_inode *fscki1;
-
-		err = ubifs_validate_entry(c, dent);
-		if (err)
-			goto out_dump;
-
-		/*
-		 * Search the inode node this entry refers to and the parent
-		 * inode node and insert them to the RB-tree of inodes.
-		 */
-		inum = le64_to_cpu(dent->inum);
-		fscki = read_add_inode(c, priv, inum);
-		if (IS_ERR(fscki)) {
-			err = PTR_ERR(fscki);
-			ubifs_err("error %d while processing entry node and "
-				  "trying to find inode node %lu",
-				  err, (unsigned long)inum);
-			goto out_dump;
-		}
-
-		/* Count how many direntries or xentries refers this inode */
-		fscki->references += 1;
-
-		inum = key_inum_flash(c, &dent->key);
-		fscki1 = read_add_inode(c, priv, inum);
-		if (IS_ERR(fscki1)) {
-			err = PTR_ERR(fscki1);
-			ubifs_err("error %d while processing entry node and "
-				  "trying to find parent inode node %lu",
-				  err, (unsigned long)inum);
-			goto out_dump;
-		}
-
-		nlen = le16_to_cpu(dent->nlen);
-		if (type == UBIFS_XENT_KEY) {
-			fscki1->calc_xcnt += 1;
-			fscki1->calc_xsz += CALC_DENT_SIZE(nlen);
-			fscki1->calc_xsz += CALC_XATTR_BYTES(fscki->size);
-			fscki1->calc_xnms += nlen;
-		} else {
-			fscki1->calc_sz += CALC_DENT_SIZE(nlen);
-			if (dent->type == UBIFS_ITYPE_DIR)
-				fscki1->calc_cnt += 1;
-		}
-	}
-
-out:
-	kfree(node);
-	return 0;
-
-out_dump:
-	ubifs_msg("dump of node at LEB %d:%d", zbr->lnum, zbr->offs);
-	dbg_dump_node(c, node);
-out_free:
-	kfree(node);
-	return err;
-}
-
-/**
- * free_inodes - free RB-tree of inodes.
- * @fsckd: FS checking information
- */
-static void free_inodes(struct fsck_data *fsckd)
-{
-	struct rb_node *this = fsckd->inodes.rb_node;
-	struct fsck_inode *fscki;
-
-	while (this) {
-		if (this->rb_left)
-			this = this->rb_left;
-		else if (this->rb_right)
-			this = this->rb_right;
-		else {
-			fscki = rb_entry(this, struct fsck_inode, rb);
-			this = rb_parent(this);
-			if (this) {
-				if (this->rb_left == &fscki->rb)
-					this->rb_left = NULL;
-				else
-					this->rb_right = NULL;
-			}
-			kfree(fscki);
-		}
-	}
-}
-
-/**
- * check_inodes - checks all inodes.
- * @c: UBIFS file-system description object
- * @fsckd: FS checking information
- *
- * This is a helper function for 'dbg_check_filesystem()' which walks the
- * RB-tree of inodes after the index scan has been finished, and checks that
- * inode nlink, size, etc are correct. Returns zero if inodes are fine,
- * %-EINVAL if not, and a negative error code in case of failure.
- */
-static int check_inodes(struct ubifs_info *c, struct fsck_data *fsckd)
-{
-	int n, err;
-	union ubifs_key key;
-	struct ubifs_znode *znode;
-	struct ubifs_zbranch *zbr;
-	struct ubifs_ino_node *ino;
-	struct fsck_inode *fscki;
-	struct rb_node *this = rb_first(&fsckd->inodes);
-
-	while (this) {
-		fscki = rb_entry(this, struct fsck_inode, rb);
-		this = rb_next(this);
-
-		if (S_ISDIR(fscki->mode)) {
-			/*
-			 * Directories have to have exactly one reference (they
-			 * cannot have hardlinks), although root inode is an
-			 * exception.
-			 */
-			if (fscki->inum != UBIFS_ROOT_INO &&
-			    fscki->references != 1) {
-				ubifs_err("directory inode %lu has %d "
-					  "direntries which refer it, but "
-					  "should be 1",
-					  (unsigned long)fscki->inum,
-					  fscki->references);
-				goto out_dump;
-			}
-			if (fscki->inum == UBIFS_ROOT_INO &&
-			    fscki->references != 0) {
-				ubifs_err("root inode %lu has non-zero (%d) "
-					  "direntries which refer it",
-					  (unsigned long)fscki->inum,
-					  fscki->references);
-				goto out_dump;
-			}
-			if (fscki->calc_sz != fscki->size) {
-				ubifs_err("directory inode %lu size is %lld, "
-					  "but calculated size is %lld",
-					  (unsigned long)fscki->inum,
-					  fscki->size, fscki->calc_sz);
-				goto out_dump;
-			}
-			if (fscki->calc_cnt != fscki->nlink) {
-				ubifs_err("directory inode %lu nlink is %d, "
-					  "but calculated nlink is %d",
-					  (unsigned long)fscki->inum,
-					  fscki->nlink, fscki->calc_cnt);
-				goto out_dump;
-			}
-		} else {
-			if (fscki->references != fscki->nlink) {
-				ubifs_err("inode %lu nlink is %d, but "
-					  "calculated nlink is %d",
-					  (unsigned long)fscki->inum,
-					  fscki->nlink, fscki->references);
-				goto out_dump;
-			}
-		}
-		if (fscki->xattr_sz != fscki->calc_xsz) {
-			ubifs_err("inode %lu has xattr size %u, but "
-				  "calculated size is %lld",
-				  (unsigned long)fscki->inum, fscki->xattr_sz,
-				  fscki->calc_xsz);
-			goto out_dump;
-		}
-		if (fscki->xattr_cnt != fscki->calc_xcnt) {
-			ubifs_err("inode %lu has %u xattrs, but "
-				  "calculated count is %lld",
-				  (unsigned long)fscki->inum,
-				  fscki->xattr_cnt, fscki->calc_xcnt);
-			goto out_dump;
-		}
-		if (fscki->xattr_nms != fscki->calc_xnms) {
-			ubifs_err("inode %lu has xattr names' size %u, but "
-				  "calculated names' size is %lld",
-				  (unsigned long)fscki->inum, fscki->xattr_nms,
-				  fscki->calc_xnms);
-			goto out_dump;
-		}
-	}
-
-	return 0;
-
-out_dump:
-	/* Read the bad inode and dump it */
-	ino_key_init(c, &key, fscki->inum);
-	err = ubifs_lookup_level0(c, &key, &znode, &n);
-	if (!err) {
-		ubifs_err("inode %lu not found in index",
-			  (unsigned long)fscki->inum);
-		return -ENOENT;
-	} else if (err < 0) {
-		ubifs_err("error %d while looking up inode %lu",
-			  err, (unsigned long)fscki->inum);
-		return err;
-	}
-
-	zbr = &znode->zbranch[n];
-	ino = kmalloc(zbr->len, GFP_NOFS);
-	if (!ino)
-		return -ENOMEM;
-
-	err = ubifs_tnc_read_node(c, zbr, ino);
-	if (err) {
-		ubifs_err("cannot read inode node at LEB %d:%d, error %d",
-			  zbr->lnum, zbr->offs, err);
-		kfree(ino);
-		return err;
-	}
-
-	ubifs_msg("dump of the inode %lu sitting in LEB %d:%d",
-		  (unsigned long)fscki->inum, zbr->lnum, zbr->offs);
-	dbg_dump_node(c, ino);
-	kfree(ino);
-	return -EINVAL;
-}
-
-/**
- * dbg_check_filesystem - check the file-system.
- * @c: UBIFS file-system description object
- *
- * This function checks the file system, namely:
- * o makes sure that all leaf nodes exist and their CRCs are correct;
- * o makes sure inode nlink, size, xattr size/count are correct (for all
- *   inodes).
- *
- * The function reads whole indexing tree and all nodes, so it is pretty
- * heavy-weight. Returns zero if the file-system is consistent, %-EINVAL if
- * not, and a negative error code in case of failure.
- */
-int dbg_check_filesystem(struct ubifs_info *c)
-{
-	int err;
-	struct fsck_data fsckd;
-
-	if (!dbg_is_chk_fs(c))
-		return 0;
-
-	fsckd.inodes = RB_ROOT;
-	err = dbg_walk_index(c, check_leaf, NULL, &fsckd);
-	if (err)
-		goto out_free;
-
-	err = check_inodes(c, &fsckd);
-	if (err)
-		goto out_free;
-
-	free_inodes(&fsckd);
-	return 0;
-
-out_free:
-	ubifs_err("file-system check failed with error %d", err);
-	dump_stack();
-	free_inodes(&fsckd);
-	return err;
-}
-
-/**
- * dbg_check_data_nodes_order - check that list of data nodes is sorted.
- * @c: UBIFS file-system description object
- * @head: the list of nodes ('struct ubifs_scan_node' objects)
- *
- * This function returns zero if the list of data nodes is sorted correctly,
- * and %-EINVAL if not.
- */
-int dbg_check_data_nodes_order(struct ubifs_info *c, struct list_head *head)
-{
-	struct list_head *cur;
-	struct ubifs_scan_node *sa, *sb;
-
-	if (!dbg_is_chk_gen(c))
-		return 0;
-
-	for (cur = head->next; cur->next != head; cur = cur->next) {
-		ino_t inuma, inumb;
-		uint32_t blka, blkb;
-
-		cond_resched();
-		sa = container_of(cur, struct ubifs_scan_node, list);
-		sb = container_of(cur->next, struct ubifs_scan_node, list);
-
-		if (sa->type != UBIFS_DATA_NODE) {
-			ubifs_err("bad node type %d", sa->type);
-			dbg_dump_node(c, sa->node);
-			return -EINVAL;
-		}
-		if (sb->type != UBIFS_DATA_NODE) {
-			ubifs_err("bad node type %d", sb->type);
-			dbg_dump_node(c, sb->node);
-			return -EINVAL;
-		}
-
-		inuma = key_inum(c, &sa->key);
-		inumb = key_inum(c, &sb->key);
-
-		if (inuma < inumb)
-			continue;
-		if (inuma > inumb) {
-			ubifs_err("larger inum %lu goes before inum %lu",
-				  (unsigned long)inuma, (unsigned long)inumb);
-			goto error_dump;
-		}
-
-		blka = key_block(c, &sa->key);
-		blkb = key_block(c, &sb->key);
-
-		if (blka > blkb) {
-			ubifs_err("larger block %u goes before %u", blka, blkb);
-			goto error_dump;
-		}
-		if (blka == blkb) {
-			ubifs_err("two data nodes for the same block");
-			goto error_dump;
-		}
-	}
-
-	return 0;
-
-error_dump:
-	dbg_dump_node(c, sa->node);
-	dbg_dump_node(c, sb->node);
-	return -EINVAL;
-}
-
-/**
- * dbg_check_nondata_nodes_order - check that list of data nodes is sorted.
- * @c: UBIFS file-system description object
- * @head: the list of nodes ('struct ubifs_scan_node' objects)
- *
- * This function returns zero if the list of non-data nodes is sorted correctly,
- * and %-EINVAL if not.
- */
-int dbg_check_nondata_nodes_order(struct ubifs_info *c, struct list_head *head)
-{
-	struct list_head *cur;
-	struct ubifs_scan_node *sa, *sb;
-
-	if (!dbg_is_chk_gen(c))
-		return 0;
-
-	for (cur = head->next; cur->next != head; cur = cur->next) {
-		ino_t inuma, inumb;
-		uint32_t hasha, hashb;
-
-		cond_resched();
-		sa = container_of(cur, struct ubifs_scan_node, list);
-		sb = container_of(cur->next, struct ubifs_scan_node, list);
-
-		if (sa->type != UBIFS_INO_NODE && sa->type != UBIFS_DENT_NODE &&
-		    sa->type != UBIFS_XENT_NODE) {
-			ubifs_err("bad node type %d", sa->type);
-			dbg_dump_node(c, sa->node);
-			return -EINVAL;
-		}
-		if (sa->type != UBIFS_INO_NODE && sa->type != UBIFS_DENT_NODE &&
-		    sa->type != UBIFS_XENT_NODE) {
-			ubifs_err("bad node type %d", sb->type);
-			dbg_dump_node(c, sb->node);
-			return -EINVAL;
-		}
-
-		if (sa->type != UBIFS_INO_NODE && sb->type == UBIFS_INO_NODE) {
-			ubifs_err("non-inode node goes before inode node");
-			goto error_dump;
-		}
-
-		if (sa->type == UBIFS_INO_NODE && sb->type != UBIFS_INO_NODE)
-			continue;
-
-		if (sa->type == UBIFS_INO_NODE && sb->type == UBIFS_INO_NODE) {
-			/* Inode nodes are sorted in descending size order */
-			if (sa->len < sb->len) {
-				ubifs_err("smaller inode node goes first");
-				goto error_dump;
-			}
-			continue;
-		}
-
-		/*
-		 * This is either a dentry or xentry, which should be sorted in
-		 * ascending (parent ino, hash) order.
-		 */
-		inuma = key_inum(c, &sa->key);
-		inumb = key_inum(c, &sb->key);
-
-		if (inuma < inumb)
-			continue;
-		if (inuma > inumb) {
-			ubifs_err("larger inum %lu goes before inum %lu",
-				  (unsigned long)inuma, (unsigned long)inumb);
-			goto error_dump;
-		}
-
-		hasha = key_block(c, &sa->key);
-		hashb = key_block(c, &sb->key);
-
-		if (hasha > hashb) {
-			ubifs_err("larger hash %u goes before %u",
-				  hasha, hashb);
-			goto error_dump;
-		}
-	}
-
-	return 0;
-
-error_dump:
-	ubifs_msg("dumping first node");
-	dbg_dump_node(c, sa->node);
-	ubifs_msg("dumping second node");
-	dbg_dump_node(c, sb->node);
-	return -EINVAL;
-	return 0;
-}
-
-static inline int chance(unsigned int n, unsigned int out_of)
-{
-	return !!((random32() % out_of) + 1 <= n);
-
-}
-
-static int power_cut_emulated(struct ubifs_info *c, int lnum, int write)
-{
-	struct ubifs_debug_info *d = c->dbg;
-
-	ubifs_assert(dbg_is_tst_rcvry(c));
-
-	if (!d->pc_cnt) {
-		/* First call - decide delay to the power cut */
-		if (chance(1, 2)) {
-			unsigned long delay;
-
-			if (chance(1, 2)) {
-				d->pc_delay = 1;
-				/* Fail withing 1 minute */
-				delay = random32() % 60000;
-				d->pc_timeout = jiffies;
-				d->pc_timeout += msecs_to_jiffies(delay);
-				ubifs_warn("failing after %lums", delay);
-			} else {
-				d->pc_delay = 2;
-				delay = random32() % 10000;
-				/* Fail within 10000 operations */
-				d->pc_cnt_max = delay;
-				ubifs_warn("failing after %lu calls", delay);
-			}
-		}
-
-		d->pc_cnt += 1;
-	}
-
-	/* Determine if failure delay has expired */
-	if (d->pc_delay == 1 && time_before(jiffies, d->pc_timeout))
-			return 0;
-	if (d->pc_delay == 2 && d->pc_cnt++ < d->pc_cnt_max)
-			return 0;
-
-	if (lnum == UBIFS_SB_LNUM) {
-		if (write && chance(1, 2))
-			return 0;
-		if (chance(19, 20))
-			return 0;
-		ubifs_warn("failing in super block LEB %d", lnum);
-	} else if (lnum == UBIFS_MST_LNUM || lnum == UBIFS_MST_LNUM + 1) {
-		if (chance(19, 20))
-			return 0;
-		ubifs_warn("failing in master LEB %d", lnum);
-	} else if (lnum >= UBIFS_LOG_LNUM && lnum <= c->log_last) {
-		if (write && chance(99, 100))
-			return 0;
-		if (chance(399, 400))
-			return 0;
-		ubifs_warn("failing in log LEB %d", lnum);
-	} else if (lnum >= c->lpt_first && lnum <= c->lpt_last) {
-		if (write && chance(7, 8))
-			return 0;
-		if (chance(19, 20))
-			return 0;
-		ubifs_warn("failing in LPT LEB %d", lnum);
-	} else if (lnum >= c->orph_first && lnum <= c->orph_last) {
-		if (write && chance(1, 2))
-			return 0;
-		if (chance(9, 10))
-			return 0;
-		ubifs_warn("failing in orphan LEB %d", lnum);
-	} else if (lnum == c->ihead_lnum) {
-		if (chance(99, 100))
-			return 0;
-		ubifs_warn("failing in index head LEB %d", lnum);
-	} else if (c->jheads && lnum == c->jheads[GCHD].wbuf.lnum) {
-		if (chance(9, 10))
-			return 0;
-		ubifs_warn("failing in GC head LEB %d", lnum);
-	} else if (write && !RB_EMPTY_ROOT(&c->buds) &&
-		   !ubifs_search_bud(c, lnum)) {
-		if (chance(19, 20))
-			return 0;
-		ubifs_warn("failing in non-bud LEB %d", lnum);
-	} else if (c->cmt_state == COMMIT_RUNNING_BACKGROUND ||
-		   c->cmt_state == COMMIT_RUNNING_REQUIRED) {
-		if (chance(999, 1000))
-			return 0;
-		ubifs_warn("failing in bud LEB %d commit running", lnum);
-	} else {
-		if (chance(9999, 10000))
-			return 0;
-		ubifs_warn("failing in bud LEB %d commit not running", lnum);
-	}
-
-	d->pc_happened = 1;
-	ubifs_warn("========== Power cut emulated ==========");
-	dump_stack();
-	return 1;
-}
-
-static void cut_data(const void *buf, unsigned int len)
-{
-	unsigned int from, to, i, ffs = chance(1, 2);
-	unsigned char *p = (void *)buf;
-
-	from = random32() % (len + 1);
-	if (chance(1, 2))
-		to = random32() % (len - from + 1);
-	else
-		to = len;
-
-	if (from < to)
-		ubifs_warn("filled bytes %u-%u with %s", from, to - 1,
-			   ffs ? "0xFFs" : "random data");
-
-	if (ffs)
-		for (i = from; i < to; i++)
-			p[i] = 0xFF;
-	else
-		for (i = from; i < to; i++)
-			p[i] = random32() % 0x100;
-}
-
-int dbg_leb_write(struct ubifs_info *c, int lnum, const void *buf,
-		  int offs, int len, int dtype)
-{
-	int err, failing;
-
-	if (c->dbg->pc_happened)
-		return -EROFS;
-
-	failing = power_cut_emulated(c, lnum, 1);
-	if (failing)
-		cut_data(buf, len);
-	err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype);
-	if (err)
-		return err;
-	if (failing)
-		return -EROFS;
-	return 0;
-}
-
-int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf,
-		   int len, int dtype)
-{
-	int err;
-
-	if (c->dbg->pc_happened)
-		return -EROFS;
-	if (power_cut_emulated(c, lnum, 1))
-		return -EROFS;
-	err = ubi_leb_change(c->ubi, lnum, buf, len, dtype);
-	if (err)
-		return err;
-	if (power_cut_emulated(c, lnum, 1))
-		return -EROFS;
-	return 0;
-}
-
-int dbg_leb_unmap(struct ubifs_info *c, int lnum)
-{
-	int err;
-
-	if (c->dbg->pc_happened)
-		return -EROFS;
-	if (power_cut_emulated(c, lnum, 0))
-		return -EROFS;
-	err = ubi_leb_unmap(c->ubi, lnum);
-	if (err)
-		return err;
-	if (power_cut_emulated(c, lnum, 0))
-		return -EROFS;
-	return 0;
-}
-
-int dbg_leb_map(struct ubifs_info *c, int lnum, int dtype)
-{
-	int err;
-
-	if (c->dbg->pc_happened)
-		return -EROFS;
-	if (power_cut_emulated(c, lnum, 0))
-		return -EROFS;
-	err = ubi_leb_map(c->ubi, lnum, dtype);
-	if (err)
-		return err;
-	if (power_cut_emulated(c, lnum, 0))
-		return -EROFS;
-	return 0;
-}
-
-/*
- * Root directory for UBIFS stuff in debugfs. Contains sub-directories which
- * contain the stuff specific to particular file-system mounts.
- */
-static struct dentry *dfs_rootdir;
-
-static int dfs_file_open(struct inode *inode, struct file *file)
-{
-	file->private_data = inode->i_private;
-	return nonseekable_open(inode, file);
-}
-
-/**
- * provide_user_output - provide output to the user reading a debugfs file.
- * @val: boolean value for the answer
- * @u: the buffer to store the answer at
- * @count: size of the buffer
- * @ppos: position in the @u output buffer
- *
- * This is a simple helper function which stores @val boolean value in the user
- * buffer when the user reads one of UBIFS debugfs files. Returns amount of
- * bytes written to @u in case of success and a negative error code in case of
- * failure.
- */
-static int provide_user_output(int val, char __user *u, size_t count,
-			       loff_t *ppos)
-{
-	char buf[3];
-
-	if (val)
-		buf[0] = '1';
-	else
-		buf[0] = '0';
-	buf[1] = '\n';
-	buf[2] = 0x00;
-
-	return simple_read_from_buffer(u, count, ppos, buf, 2);
-}
-
-static ssize_t dfs_file_read(struct file *file, char __user *u, size_t count,
-			     loff_t *ppos)
-{
-	struct dentry *dent = file->f_path.dentry;
-	struct ubifs_info *c = file->private_data;
-	struct ubifs_debug_info *d = c->dbg;
-	int val;
-
-	if (dent == d->dfs_chk_gen)
-		val = d->chk_gen;
-	else if (dent == d->dfs_chk_index)
-		val = d->chk_index;
-	else if (dent == d->dfs_chk_orph)
-		val = d->chk_orph;
-	else if (dent == d->dfs_chk_lprops)
-		val = d->chk_lprops;
-	else if (dent == d->dfs_chk_fs)
-		val = d->chk_fs;
-	else if (dent == d->dfs_tst_rcvry)
-		val = d->tst_rcvry;
-	else
-		return -EINVAL;
-
-	return provide_user_output(val, u, count, ppos);
-}
-
-/**
- * interpret_user_input - interpret user debugfs file input.
- * @u: user-provided buffer with the input
- * @count: buffer size
- *
- * This is a helper function which interpret user input to a boolean UBIFS
- * debugfs file. Returns %0 or %1 in case of success and a negative error code
- * in case of failure.
- */
-static int interpret_user_input(const char __user *u, size_t count)
-{
-	size_t buf_size;
-	char buf[8];
-
-	buf_size = min_t(size_t, count, (sizeof(buf) - 1));
-	if (copy_from_user(buf, u, buf_size))
-		return -EFAULT;
-
-	if (buf[0] == '1')
-		return 1;
-	else if (buf[0] == '0')
-		return 0;
-
-	return -EINVAL;
-}
-
-static ssize_t dfs_file_write(struct file *file, const char __user *u,
-			      size_t count, loff_t *ppos)
-{
-	struct ubifs_info *c = file->private_data;
-	struct ubifs_debug_info *d = c->dbg;
-	struct dentry *dent = file->f_path.dentry;
-	int val;
-
-	/*
-	 * TODO: this is racy - the file-system might have already been
-	 * unmounted and we'd oops in this case. The plan is to fix it with
-	 * help of 'iterate_supers_type()' which we should have in v3.0: when
-	 * a debugfs opened, we rember FS's UUID in file->private_data. Then
-	 * whenever we access the FS via a debugfs file, we iterate all UBIFS
-	 * superblocks and fine the one with the same UUID, and take the
-	 * locking right.
-	 *
-	 * The other way to go suggested by Al Viro is to create a separate
-	 * 'ubifs-debug' file-system instead.
-	 */
-	if (file->f_path.dentry == d->dfs_dump_lprops) {
-		dbg_dump_lprops(c);
-		return count;
-	}
-	if (file->f_path.dentry == d->dfs_dump_budg) {
-		dbg_dump_budg(c, &c->bi);
-		return count;
-	}
-	if (file->f_path.dentry == d->dfs_dump_tnc) {
-		mutex_lock(&c->tnc_mutex);
-		dbg_dump_tnc(c);
-		mutex_unlock(&c->tnc_mutex);
-		return count;
-	}
-
-	val = interpret_user_input(u, count);
-	if (val < 0)
-		return val;
-
-	if (dent == d->dfs_chk_gen)
-		d->chk_gen = val;
-	else if (dent == d->dfs_chk_index)
-		d->chk_index = val;
-	else if (dent == d->dfs_chk_orph)
-		d->chk_orph = val;
-	else if (dent == d->dfs_chk_lprops)
-		d->chk_lprops = val;
-	else if (dent == d->dfs_chk_fs)
-		d->chk_fs = val;
-	else if (dent == d->dfs_tst_rcvry)
-		d->tst_rcvry = val;
-	else
-		return -EINVAL;
-
-	return count;
-}
-
-static const struct file_operations dfs_fops = {
-	.open = dfs_file_open,
-	.read = dfs_file_read,
-	.write = dfs_file_write,
-	.owner = THIS_MODULE,
-	.llseek = no_llseek,
-};
-
-/**
- * dbg_debugfs_init_fs - initialize debugfs for UBIFS instance.
- * @c: UBIFS file-system description object
- *
- * This function creates all debugfs files for this instance of UBIFS. Returns
- * zero in case of success and a negative error code in case of failure.
- *
- * Note, the only reason we have not merged this function with the
- * 'ubifs_debugging_init()' function is because it is better to initialize
- * debugfs interfaces at the very end of the mount process, and remove them at
- * the very beginning of the mount process.
- */
-int dbg_debugfs_init_fs(struct ubifs_info *c)
-{
-	int err, n;
-	const char *fname;
-	struct dentry *dent;
-	struct ubifs_debug_info *d = c->dbg;
-
-	n = snprintf(d->dfs_dir_name, UBIFS_DFS_DIR_LEN + 1, UBIFS_DFS_DIR_NAME,
-		     c->vi.ubi_num, c->vi.vol_id);
-	if (n == UBIFS_DFS_DIR_LEN) {
-		/* The array size is too small */
-		fname = UBIFS_DFS_DIR_NAME;
-		dent = ERR_PTR(-EINVAL);
-		goto out;
-	}
-
-	fname = d->dfs_dir_name;
-	dent = debugfs_create_dir(fname, dfs_rootdir);
-	if (IS_ERR_OR_NULL(dent))
-		goto out;
-	d->dfs_dir = dent;
-
-	fname = "dump_lprops";
-	dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	d->dfs_dump_lprops = dent;
-
-	fname = "dump_budg";
-	dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	d->dfs_dump_budg = dent;
-
-	fname = "dump_tnc";
-	dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, c, &dfs_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	d->dfs_dump_tnc = dent;
-
-	fname = "chk_general";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
-				   &dfs_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	d->dfs_chk_gen = dent;
-
-	fname = "chk_index";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
-				   &dfs_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	d->dfs_chk_index = dent;
-
-	fname = "chk_orphans";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
-				   &dfs_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	d->dfs_chk_orph = dent;
-
-	fname = "chk_lprops";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
-				   &dfs_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	d->dfs_chk_lprops = dent;
-
-	fname = "chk_fs";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
-				   &dfs_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	d->dfs_chk_fs = dent;
-
-	fname = "tst_recovery";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, d->dfs_dir, c,
-				   &dfs_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	d->dfs_tst_rcvry = dent;
-
-	return 0;
-
-out_remove:
-	debugfs_remove_recursive(d->dfs_dir);
-out:
-	err = dent ? PTR_ERR(dent) : -ENODEV;
-	ubifs_err("cannot create \"%s\" debugfs file or directory, error %d\n",
-		  fname, err);
-	return err;
-}
-
-/**
- * dbg_debugfs_exit_fs - remove all debugfs files.
- * @c: UBIFS file-system description object
- */
-void dbg_debugfs_exit_fs(struct ubifs_info *c)
-{
-	debugfs_remove_recursive(c->dbg->dfs_dir);
-}
-
-struct ubifs_global_debug_info ubifs_dbg;
-
-static struct dentry *dfs_chk_gen;
-static struct dentry *dfs_chk_index;
-static struct dentry *dfs_chk_orph;
-static struct dentry *dfs_chk_lprops;
-static struct dentry *dfs_chk_fs;
-static struct dentry *dfs_tst_rcvry;
-
-static ssize_t dfs_global_file_read(struct file *file, char __user *u,
-				    size_t count, loff_t *ppos)
-{
-	struct dentry *dent = file->f_path.dentry;
-	int val;
-
-	if (dent == dfs_chk_gen)
-		val = ubifs_dbg.chk_gen;
-	else if (dent == dfs_chk_index)
-		val = ubifs_dbg.chk_index;
-	else if (dent == dfs_chk_orph)
-		val = ubifs_dbg.chk_orph;
-	else if (dent == dfs_chk_lprops)
-		val = ubifs_dbg.chk_lprops;
-	else if (dent == dfs_chk_fs)
-		val = ubifs_dbg.chk_fs;
-	else if (dent == dfs_tst_rcvry)
-		val = ubifs_dbg.tst_rcvry;
-	else
-		return -EINVAL;
-
-	return provide_user_output(val, u, count, ppos);
-}
-
-static ssize_t dfs_global_file_write(struct file *file, const char __user *u,
-				     size_t count, loff_t *ppos)
-{
-	struct dentry *dent = file->f_path.dentry;
-	int val;
-
-	val = interpret_user_input(u, count);
-	if (val < 0)
-		return val;
-
-	if (dent == dfs_chk_gen)
-		ubifs_dbg.chk_gen = val;
-	else if (dent == dfs_chk_index)
-		ubifs_dbg.chk_index = val;
-	else if (dent == dfs_chk_orph)
-		ubifs_dbg.chk_orph = val;
-	else if (dent == dfs_chk_lprops)
-		ubifs_dbg.chk_lprops = val;
-	else if (dent == dfs_chk_fs)
-		ubifs_dbg.chk_fs = val;
-	else if (dent == dfs_tst_rcvry)
-		ubifs_dbg.tst_rcvry = val;
-	else
-		return -EINVAL;
-
-	return count;
-}
-
-static const struct file_operations dfs_global_fops = {
-	.read = dfs_global_file_read,
-	.write = dfs_global_file_write,
-	.owner = THIS_MODULE,
-	.llseek = no_llseek,
-};
-
-/**
- * dbg_debugfs_init - initialize debugfs file-system.
- *
- * UBIFS uses debugfs file-system to expose various debugging knobs to
- * user-space. This function creates "ubifs" directory in the debugfs
- * file-system. Returns zero in case of success and a negative error code in
- * case of failure.
- */
-int dbg_debugfs_init(void)
-{
-	int err;
-	const char *fname;
-	struct dentry *dent;
-
-	fname = "ubifs";
-	dent = debugfs_create_dir(fname, NULL);
-	if (IS_ERR_OR_NULL(dent))
-		goto out;
-	dfs_rootdir = dent;
-
-	fname = "chk_general";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
-				   &dfs_global_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	dfs_chk_gen = dent;
-
-	fname = "chk_index";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
-				   &dfs_global_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	dfs_chk_index = dent;
-
-	fname = "chk_orphans";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
-				   &dfs_global_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	dfs_chk_orph = dent;
-
-	fname = "chk_lprops";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
-				   &dfs_global_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	dfs_chk_lprops = dent;
-
-	fname = "chk_fs";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
-				   &dfs_global_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	dfs_chk_fs = dent;
-
-	fname = "tst_recovery";
-	dent = debugfs_create_file(fname, S_IRUSR | S_IWUSR, dfs_rootdir, NULL,
-				   &dfs_global_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto out_remove;
-	dfs_tst_rcvry = dent;
-
-	return 0;
-
-out_remove:
-	debugfs_remove_recursive(dfs_rootdir);
-out:
-	err = dent ? PTR_ERR(dent) : -ENODEV;
-	ubifs_err("cannot create \"%s\" debugfs file or directory, error %d\n",
-		  fname, err);
-	return err;
-}
-
-/**
- * dbg_debugfs_exit - remove the "ubifs" directory from debugfs file-system.
- */
-void dbg_debugfs_exit(void)
-{
-	debugfs_remove_recursive(dfs_rootdir);
-}
-
-/**
- * ubifs_debugging_init - initialize UBIFS debugging.
- * @c: UBIFS file-system description object
- *
- * This function initializes debugging-related data for the file system.
- * Returns zero in case of success and a negative error code in case of
- * failure.
- */
-int ubifs_debugging_init(struct ubifs_info *c)
-{
-	c->dbg = kzalloc(sizeof(struct ubifs_debug_info), GFP_KERNEL);
-	if (!c->dbg)
-		return -ENOMEM;
-
-	return 0;
-}
-
-/**
- * ubifs_debugging_exit - free debugging data.
- * @c: UBIFS file-system description object
- */
-void ubifs_debugging_exit(struct ubifs_info *c)
-{
-	kfree(c->dbg);
-}
-
-#endif /* CONFIG_UBIFS_FS_DEBUG */