UBIFS: separate debugging fields out

Introduce a new data structure which contains all debugging
stuff inside. This is cleaner than having debugging stuff
directly in 'c'.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c
index b49884c..f3a7945 100644 (file)
--- a/fs/ubifs/commit.c
+++ b/fs/ubifs/commit.c
@@ -470,12 +470,12 @@ int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot)
 {
        struct ubifs_idx_node *idx;
        int lnum, offs, len, err = 0;
+       struct ubifs_debug_info *d = c->dbg;
 
-       c->old_zroot = *zroot;
-
-       lnum = c->old_zroot.lnum;
-       offs = c->old_zroot.offs;
-       len = c->old_zroot.len;
+       d->old_zroot = *zroot;
+       lnum = d->old_zroot.lnum;
+       offs = d->old_zroot.offs;
+       len = d->old_zroot.len;
 
        idx = kmalloc(c->max_idx_node_sz, GFP_NOFS);
        if (!idx)
@@ -485,8 +485,8 @@ int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot)
        if (err)
                goto out;
 
-       c->old_zroot_level = le16_to_cpu(idx->level);
-       c->old_zroot_sqnum = le64_to_cpu(idx->ch.sqnum);
+       d->old_zroot_level = le16_to_cpu(idx->level);
+       d->old_zroot_sqnum = le64_to_cpu(idx->ch.sqnum);
 out:
        kfree(idx);
        return err;
@@ -509,6 +509,7 @@ int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
 {
        int lnum, offs, len, err = 0, uninitialized_var(last_level), child_cnt;
        int first = 1, iip;
+       struct ubifs_debug_info *d = c->dbg;
        union ubifs_key lower_key, upper_key, l_key, u_key;
        unsigned long long uninitialized_var(last_sqnum);
        struct ubifs_idx_node *idx;
@@ -525,9 +526,9 @@ int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
             UBIFS_IDX_NODE_SZ;
 
        /* Start at the old zroot */
-       lnum = c->old_zroot.lnum;
-       offs = c->old_zroot.offs;
-       len = c->old_zroot.len;
+       lnum = d->old_zroot.lnum;
+       offs = d->old_zroot.offs;
+       len = d->old_zroot.len;
        iip = 0;
 
        /*
@@ -560,11 +561,11 @@ int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
                if (first) {
                        first = 0;
                        /* Check root level and sqnum */
-                       if (le16_to_cpu(idx->level) != c->old_zroot_level) {
+                       if (le16_to_cpu(idx->level) != d->old_zroot_level) {
                                err = 2;
                                goto out_dump;
                        }
-                       if (le64_to_cpu(idx->ch.sqnum) != c->old_zroot_sqnum) {
+                       if (le64_to_cpu(idx->ch.sqnum) != d->old_zroot_sqnum) {
                                err = 3;
                                goto out_dump;
                        }

diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 510ffa0..0332a85 100644 (file)
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -705,7 +705,7 @@ void dbg_dump_leb(const struct ubifs_info *c, int lnum)
 
        printk(KERN_DEBUG "(pid %d) Dumping LEB %d\n", current->pid, lnum);
 
-       sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
+       sleb = ubifs_scan(c, lnum, 0, c->dbg->buf);
        if (IS_ERR(sleb)) {
                ubifs_err("scan error %d", (int)PTR_ERR(sleb));
                return;
@@ -2097,7 +2097,7 @@ static int simple_rand(void)
        return (next >> 16) & 32767;
 }
 
-void dbg_failure_mode_registration(struct ubifs_info *c)
+static void failure_mode_init(struct ubifs_info *c)
 {
        struct failure_mode_info *fmi;
 
@@ -2112,7 +2112,7 @@ void dbg_failure_mode_registration(struct ubifs_info *c)
        spin_unlock(&fmi_lock);
 }
 
-void dbg_failure_mode_deregistration(struct ubifs_info *c)
+static void failure_mode_exit(struct ubifs_info *c)
 {
        struct failure_mode_info *fmi, *tmp;
 
@@ -2146,42 +2146,44 @@ static int in_failure_mode(struct ubi_volume_desc *desc)
        struct ubifs_info *c = dbg_find_info(desc);
 
        if (c && dbg_failure_mode)
-               return c->failure_mode;
+               return c->dbg->failure_mode;
        return 0;
 }
 
 static int do_fail(struct ubi_volume_desc *desc, int lnum, int write)
 {
        struct ubifs_info *c = dbg_find_info(desc);
+       struct ubifs_debug_info *d;
 
        if (!c || !dbg_failure_mode)
                return 0;
-       if (c->failure_mode)
+       d = c->dbg;
+       if (d->failure_mode)
                return 1;
-       if (!c->fail_cnt) {
+       if (!d->fail_cnt) {
                /* First call - decide delay to failure */
                if (chance(1, 2)) {
                        unsigned int delay = 1 << (simple_rand() >> 11);
 
                        if (chance(1, 2)) {
-                               c->fail_delay = 1;
-                               c->fail_timeout = jiffies +
+                               d->fail_delay = 1;
+                               d->fail_timeout = jiffies +
                                                  msecs_to_jiffies(delay);
                                dbg_rcvry("failing after %ums", delay);
                        } else {
-                               c->fail_delay = 2;
-                               c->fail_cnt_max = delay;
+                               d->fail_delay = 2;
+                               d->fail_cnt_max = delay;
                                dbg_rcvry("failing after %u calls", delay);
                        }
                }
-               c->fail_cnt += 1;
+               d->fail_cnt += 1;
        }
        /* Determine if failure delay has expired */
-       if (c->fail_delay == 1) {
-               if (time_before(jiffies, c->fail_timeout))
+       if (d->fail_delay == 1) {
+               if (time_before(jiffies, d->fail_timeout))
                        return 0;
-       } else if (c->fail_delay == 2)
-               if (c->fail_cnt++ < c->fail_cnt_max)
+       } else if (d->fail_delay == 2)
+               if (d->fail_cnt++ < d->fail_cnt_max)
                        return 0;
        if (lnum == UBIFS_SB_LNUM) {
                if (write) {
@@ -2239,7 +2241,7 @@ static int do_fail(struct ubi_volume_desc *desc, int lnum, int write)
                dbg_rcvry("failing in bud LEB %d commit not running", lnum);
        }
        ubifs_err("*** SETTING FAILURE MODE ON (LEB %d) ***", lnum);
-       c->failure_mode = 1;
+       d->failure_mode = 1;
        dump_stack();
        return 1;
 }
@@ -2344,4 +2346,41 @@ int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
        return 0;
 }
 
+/**
+ * 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;
+
+       c->dbg->buf = vmalloc(c->leb_size);
+       if (!c->dbg->buf)
+               goto out;
+
+       failure_mode_init(c);
+       return 0;
+
+out:
+       kfree(c->dbg);
+       return -ENOMEM;
+}
+
+/**
+ * ubifs_debugging_exit - free debugging data.
+ * @c: UBIFS file-system description object
+ */
+void ubifs_debugging_exit(struct ubifs_info *c)
+{
+       failure_mode_exit(c);
+       vfree(c->dbg->buf);
+       kfree(c->dbg);
+}
+
 #endif /* CONFIG_UBIFS_FS_DEBUG */

diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
index 33d6b95..d6ea136 100644 (file)
--- a/fs/ubifs/debug.h
+++ b/fs/ubifs/debug.h
@@ -25,7 +25,43 @@
 
 #ifdef CONFIG_UBIFS_FS_DEBUG
 
-#define UBIFS_DBG(op) op
+/**
+ * ubifs_debug_info - per-FS debugging information.
+ * @buf: a buffer of LEB size, used for various purposes
+ * @old_zroot: old index root - used by 'dbg_check_old_index()'
+ * @old_zroot_level: old index root level - used by 'dbg_check_old_index()'
+ * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()'
+ * @failure_mode: failure mode for recovery testing
+ * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
+ * @fail_timeout: time in jiffies when delay of failure mode expires
+ * @fail_cnt: current number of calls to failure mode I/O functions
+ * @fail_cnt_max: number of calls by which to delay failure mode
+ * @chk_lpt_sz: used by LPT tree size checker
+ * @chk_lpt_sz2: used by LPT tree size checker
+ * @chk_lpt_wastage: used by LPT tree size checker
+ * @chk_lpt_lebs: used by LPT tree size checker
+ * @new_nhead_offs: used by LPT tree size checker
+ * @new_ihead_lnum: used by debugging to check ihead_lnum
+ * @new_ihead_offs: used by debugging to check ihead_offs
+ */
+struct ubifs_debug_info {
+       void *buf;
+       struct ubifs_zbranch old_zroot;
+       int old_zroot_level;
+       unsigned long long old_zroot_sqnum;
+       int failure_mode;
+       int fail_delay;
+       unsigned long fail_timeout;
+       unsigned int fail_cnt;
+       unsigned int fail_cnt_max;
+       long long chk_lpt_sz;
+       long long chk_lpt_sz2;
+       long long chk_lpt_wastage;
+       int chk_lpt_lebs;
+       int new_nhead_offs;
+       int new_ihead_lnum;
+       int new_ihead_offs;
+};
 
 #define ubifs_assert(expr) do {                                                \
        if (unlikely(!(expr))) {                                               \
@@ -211,6 +247,9 @@ extern unsigned int ubifs_msg_flags;
 extern unsigned int ubifs_chk_flags;
 extern unsigned int ubifs_tst_flags;
 
+int ubifs_debugging_init(struct ubifs_info *c);
+void ubifs_debugging_exit(struct ubifs_info *c);
+
 /* Dump functions */
 
 const char *dbg_ntype(int type);
@@ -274,9 +313,6 @@ int dbg_force_in_the_gaps(void);
 
 #define dbg_failure_mode (ubifs_tst_flags & UBIFS_TST_RCVRY)
 
-void dbg_failure_mode_registration(struct ubifs_info *c);
-void dbg_failure_mode_deregistration(struct ubifs_info *c);
-
 #ifndef UBIFS_DBG_PRESERVE_UBI
 
 #define ubi_leb_read   dbg_leb_read
@@ -320,8 +356,6 @@ static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
 
 #else /* !CONFIG_UBIFS_FS_DEBUG */
 
-#define UBIFS_DBG(op)
-
 /* Use "if (0)" to make compiler check arguments even if debugging is off */
 #define ubifs_assert(expr)  do {                                               \
        if (0 && (expr))                                                       \
@@ -360,6 +394,9 @@ static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
 #define DBGKEY(key)  ((char *)(key))
 #define DBGKEY1(key) ((char *)(key))
 
+#define ubifs_debugging_init(c)               0
+#define ubifs_debugging_exit(c)               ({})
+
 #define dbg_ntype(type)                       ""
 #define dbg_cstate(cmt_state)                 ""
 #define dbg_get_key_dump(c, key)              ({})
@@ -396,8 +433,6 @@ static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
 #define dbg_force_in_the_gaps_enabled              0
 #define dbg_force_in_the_gaps()                    0
 #define dbg_failure_mode                           0
-#define dbg_failure_mode_registration(c)           ({})
-#define dbg_failure_mode_deregistration(c)         ({})
 
 #endif /* !CONFIG_UBIFS_FS_DEBUG */
 

diff --git a/fs/ubifs/lprops.c b/fs/ubifs/lprops.c
index f27176e..10ba663 100644 (file)
--- a/fs/ubifs/lprops.c
+++ b/fs/ubifs/lprops.c
@@ -1088,7 +1088,7 @@ static int scan_check_cb(struct ubifs_info *c,
                }
        }
 
-       sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
+       sleb = ubifs_scan(c, lnum, 0, c->dbg->buf);
        if (IS_ERR(sleb)) {
                /*
                 * After an unclean unmount, empty and freeable LEBs

diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index a41434b..1aefab9 100644 (file)
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -1602,7 +1602,7 @@ static int dbg_check_ltab_lnum(struct ubifs_info *c, int lnum)
 {
        int err, len = c->leb_size, dirty = 0, node_type, node_num, node_len;
        int ret;
-       void *buf = c->dbg_buf;
+       void *buf = c->dbg->buf;
 
        dbg_lp("LEB %d", lnum);
        err = ubi_read(c->ubi, lnum, buf, 0, c->leb_size);
@@ -1731,15 +1731,16 @@ int dbg_chk_lpt_free_spc(struct ubifs_info *c)
  */
 int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len)
 {
+       struct ubifs_debug_info *d = c->dbg;
        long long chk_lpt_sz, lpt_sz;
        int err = 0;
 
        switch (action) {
        case 0:
-               c->chk_lpt_sz = 0;
-               c->chk_lpt_sz2 = 0;
-               c->chk_lpt_lebs = 0;
-               c->chk_lpt_wastage = 0;
+               d->chk_lpt_sz = 0;
+               d->chk_lpt_sz2 = 0;
+               d->chk_lpt_lebs = 0;
+               d->chk_lpt_wastage = 0;
                if (c->dirty_pn_cnt > c->pnode_cnt) {
                        dbg_err("dirty pnodes %d exceed max %d",
                                c->dirty_pn_cnt, c->pnode_cnt);
@@ -1752,35 +1753,35 @@ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len)
                }
                return err;
        case 1:
-               c->chk_lpt_sz += len;
+               d->chk_lpt_sz += len;
                return 0;
        case 2:
-               c->chk_lpt_sz += len;
-               c->chk_lpt_wastage += len;
-               c->chk_lpt_lebs += 1;
+               d->chk_lpt_sz += len;
+               d->chk_lpt_wastage += len;
+               d->chk_lpt_lebs += 1;
                return 0;
        case 3:
                chk_lpt_sz = c->leb_size;
-               chk_lpt_sz *= c->chk_lpt_lebs;
+               chk_lpt_sz *= d->chk_lpt_lebs;
                chk_lpt_sz += len - c->nhead_offs;
-               if (c->chk_lpt_sz != chk_lpt_sz) {
+               if (d->chk_lpt_sz != chk_lpt_sz) {
                        dbg_err("LPT wrote %lld but space used was %lld",
-                               c->chk_lpt_sz, chk_lpt_sz);
+                               d->chk_lpt_sz, chk_lpt_sz);
                        err = -EINVAL;
                }
-               if (c->chk_lpt_sz > c->lpt_sz) {
+               if (d->chk_lpt_sz > c->lpt_sz) {
                        dbg_err("LPT wrote %lld but lpt_sz is %lld",
-                               c->chk_lpt_sz, c->lpt_sz);
+                               d->chk_lpt_sz, c->lpt_sz);
                        err = -EINVAL;
                }
-               if (c->chk_lpt_sz2 && c->chk_lpt_sz != c->chk_lpt_sz2) {
+               if (d->chk_lpt_sz2 && d->chk_lpt_sz != d->chk_lpt_sz2) {
                        dbg_err("LPT layout size %lld but wrote %lld",
-                               c->chk_lpt_sz, c->chk_lpt_sz2);
+                               d->chk_lpt_sz, d->chk_lpt_sz2);
                        err = -EINVAL;
                }
-               if (c->chk_lpt_sz2 && c->new_nhead_offs != len) {
+               if (d->chk_lpt_sz2 && d->new_nhead_offs != len) {
                        dbg_err("LPT new nhead offs: expected %d was %d",
-                               c->new_nhead_offs, len);
+                               d->new_nhead_offs, len);
                        err = -EINVAL;
                }
                lpt_sz = (long long)c->pnode_cnt * c->pnode_sz;
@@ -1788,22 +1789,22 @@ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len)
                lpt_sz += c->ltab_sz;
                if (c->big_lpt)
                        lpt_sz += c->lsave_sz;
-               if (c->chk_lpt_sz - c->chk_lpt_wastage > lpt_sz) {
+               if (d->chk_lpt_sz - d->chk_lpt_wastage > lpt_sz) {
                        dbg_err("LPT chk_lpt_sz %lld + waste %lld exceeds %lld",
-                               c->chk_lpt_sz, c->chk_lpt_wastage, lpt_sz);
+                               d->chk_lpt_sz, d->chk_lpt_wastage, lpt_sz);
                        err = -EINVAL;
                }
                if (err)
                        dbg_dump_lpt_info(c);
-               c->chk_lpt_sz2 = c->chk_lpt_sz;
-               c->chk_lpt_sz = 0;
-               c->chk_lpt_wastage = 0;
-               c->chk_lpt_lebs = 0;
-               c->new_nhead_offs = len;
+               d->chk_lpt_sz2 = d->chk_lpt_sz;
+               d->chk_lpt_sz = 0;
+               d->chk_lpt_wastage = 0;
+               d->chk_lpt_lebs = 0;
+               d->new_nhead_offs = len;
                return err;
        case 4:
-               c->chk_lpt_sz += len;
-               c->chk_lpt_wastage += len;
+               d->chk_lpt_sz += len;
+               d->chk_lpt_wastage += len;
                return 0;
        default:
                return -EINVAL;

diff --git a/fs/ubifs/orphan.c b/fs/ubifs/orphan.c
index 9bd5a43..9e6f403 100644 (file)
--- a/fs/ubifs/orphan.c
+++ b/fs/ubifs/orphan.c
@@ -899,7 +899,7 @@ static int dbg_scan_orphans(struct ubifs_info *c, struct check_info *ci)
        for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
                struct ubifs_scan_leb *sleb;
 
-               sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
+               sleb = ubifs_scan(c, lnum, 0, c->dbg->buf);
                if (IS_ERR(sleb)) {
                        err = PTR_ERR(sleb);
                        break;

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index fc81022..ad44822 100644 (file)
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1069,11 +1069,9 @@ static int mount_ubifs(struct ubifs_info *c)
        if (err)
                return err;
 
-#ifdef CONFIG_UBIFS_FS_DEBUG
-       c->dbg_buf = vmalloc(c->leb_size);
-       if (!c->dbg_buf)
-               return -ENOMEM;
-#endif
+       err = ubifs_debugging_init(c);
+       if (err)
+               return err;
 
        err = check_volume_empty(c);
        if (err)
@@ -1139,18 +1137,16 @@ static int mount_ubifs(struct ubifs_info *c)
                goto out_free;
        }
 
-       dbg_failure_mode_registration(c);
-
        err = init_constants_late(c);
        if (err)
-               goto out_dereg;
+               goto out_free;
 
        sz = ALIGN(c->max_idx_node_sz, c->min_io_size);
        sz = ALIGN(sz + c->max_idx_node_sz, c->min_io_size);
        c->cbuf = kmalloc(sz, GFP_NOFS);
        if (!c->cbuf) {
                err = -ENOMEM;
-               goto out_dereg;
+               goto out_free;
        }
 
        sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num, c->vi.vol_id);
@@ -1350,14 +1346,12 @@ out_wbufs:
        free_wbufs(c);
 out_cbuf:
        kfree(c->cbuf);
-out_dereg:
-       dbg_failure_mode_deregistration(c);
 out_free:
        kfree(c->bu.buf);
        vfree(c->ileb_buf);
        vfree(c->sbuf);
        kfree(c->bottom_up_buf);
-       UBIFS_DBG(vfree(c->dbg_buf));
+       ubifs_debugging_exit(c);
        return err;
 }
 
@@ -1394,8 +1388,7 @@ static void ubifs_umount(struct ubifs_info *c)
        vfree(c->ileb_buf);
        vfree(c->sbuf);
        kfree(c->bottom_up_buf);
-       UBIFS_DBG(vfree(c->dbg_buf));
-       dbg_failure_mode_deregistration(c);
+       ubifs_debugging_exit(c);
 }
 
 /**
@@ -1879,7 +1872,6 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
                goto out_iput;
 
        mutex_unlock(&c->umount_mutex);
-
        return 0;
 
 out_iput:

diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c
index 8ac76b1..3c0af45 100644 (file)
--- a/fs/ubifs/tnc_commit.c
+++ b/fs/ubifs/tnc_commit.c
@@ -553,8 +553,8 @@ static int layout_in_empty_space(struct ubifs_info *c)
        }
 
 #ifdef CONFIG_UBIFS_FS_DEBUG
-       c->new_ihead_lnum = lnum;
-       c->new_ihead_offs = buf_offs;
+       c->dbg->new_ihead_lnum = lnum;
+       c->dbg->new_ihead_offs = buf_offs;
 #endif
 
        return 0;
@@ -1002,7 +1002,8 @@ static int write_index(struct ubifs_info *c)
        }
 
 #ifdef CONFIG_UBIFS_FS_DEBUG
-       if (lnum != c->new_ihead_lnum || buf_offs != c->new_ihead_offs) {
+       if (lnum != c->dbg->new_ihead_lnum ||
+           buf_offs != c->dbg->new_ihead_offs) {
                ubifs_err("inconsistent ihead");
                return -EINVAL;
        }

diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 16840e0..7e090a5 100644 (file)
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -910,6 +910,8 @@ struct ubifs_mount_opts {
        unsigned int compr_type:2;
 };
 
+struct ubifs_debug_info;
+
 /**
  * struct ubifs_info - UBIFS file-system description data structure
  * (per-superblock).
@@ -972,8 +974,6 @@ struct ubifs_mount_opts {
  * @ileb_nxt: next pre-allocated index LEBs
  * @old_idx: tree of index nodes obsoleted since the last commit start
  * @bottom_up_buf: a buffer which is used by 'dirty_cow_bottom_up()' in tnc.c
- * @new_ihead_lnum: used by debugging to check ihead_lnum
- * @new_ihead_offs: used by debugging to check ihead_offs
  *
  * @mst_node: master node
  * @mst_offs: offset of valid master node
@@ -1157,15 +1157,7 @@ struct ubifs_mount_opts {
  * @always_chk_crc: always check CRCs (while mounting and remounting rw)
  * @mount_opts: UBIFS-specific mount options
  *
- * @dbg_buf: a buffer of LEB size used for debugging purposes
- * @old_zroot: old index root - used by 'dbg_check_old_index()'
- * @old_zroot_level: old index root level - used by 'dbg_check_old_index()'
- * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()'
- * @failure_mode: failure mode for recovery testing
- * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
- * @fail_timeout: time in jiffies when delay of failure mode expires
- * @fail_cnt: current number of calls to failure mode I/O functions
- * @fail_cnt_max: number of calls by which to delay failure mode
+ * @dbg: debugging-related information
  */
 struct ubifs_info {
        struct super_block *vfs_sb;
@@ -1221,10 +1213,6 @@ struct ubifs_info {
        int ileb_nxt;
        struct rb_root old_idx;
        int *bottom_up_buf;
-#ifdef CONFIG_UBIFS_FS_DEBUG
-       int new_ihead_lnum;
-       int new_ihead_offs;
-#endif
 
        struct ubifs_mst_node *mst_node;
        int mst_offs;
@@ -1399,21 +1387,7 @@ struct ubifs_info {
        struct ubifs_mount_opts mount_opts;
 
 #ifdef CONFIG_UBIFS_FS_DEBUG
-       void *dbg_buf;
-       struct ubifs_zbranch old_zroot;
-       int old_zroot_level;
-       unsigned long long old_zroot_sqnum;
-       int failure_mode;
-       int fail_delay;
-       unsigned long fail_timeout;
-       unsigned int fail_cnt;
-       unsigned int fail_cnt_max;
-       long long chk_lpt_sz;
-       long long chk_lpt_sz2;
-       long long chk_lpt_wastage;
-       int chk_lpt_lebs;
-       int new_nhead_lnum;
-       int new_nhead_offs;
+       struct ubifs_debug_info *dbg;
 #endif
 };