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Diffstat (limited to 'fs/ubifs/debug.c')
-rw-r--r--fs/ubifs/debug.c122
1 files changed, 88 insertions, 34 deletions
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 792c5a16c182..e975bd82f38b 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -620,9 +620,11 @@ void dbg_dump_budg(struct ubifs_info *c)
c->dark_wm, c->dead_wm, c->max_idx_node_sz);
printk(KERN_DEBUG "\tgc_lnum %d, ihead_lnum %d\n",
c->gc_lnum, c->ihead_lnum);
- for (i = 0; i < c->jhead_cnt; i++)
- printk(KERN_DEBUG "\tjhead %d\t LEB %d\n",
- c->jheads[i].wbuf.jhead, c->jheads[i].wbuf.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_DEBUG "\tjhead %d\t LEB %d\n",
+ 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_DEBUG "\tbud LEB %d\n", bud->lnum);
@@ -637,10 +639,7 @@ void dbg_dump_budg(struct ubifs_info *c)
/* Print budgeting predictions */
available = ubifs_calc_available(c, c->min_idx_lebs);
outstanding = c->budg_data_growth + c->budg_dd_growth;
- if (available > outstanding)
- free = ubifs_reported_space(c, available - outstanding);
- else
- free = 0;
+ free = ubifs_get_free_space_nolock(c);
printk(KERN_DEBUG "Budgeting predictions:\n");
printk(KERN_DEBUG "\tavailable: %lld, outstanding %lld, free %lld\n",
available, outstanding, free);
@@ -861,6 +860,65 @@ void dbg_dump_index(struct ubifs_info *c)
}
/**
+ * 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;
+
+ ubifs_get_lp_stats(c, &d->saved_lst);
+
+ spin_lock(&c->space_lock);
+ d->saved_free = ubifs_get_free_space_nolock(c);
+ 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 avail, free;
+
+ spin_lock(&c->space_lock);
+ avail = ubifs_calc_available(c, c->min_idx_lebs);
+ spin_unlock(&c->space_lock);
+ free = ubifs_get_free_space(c);
+
+ 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_get_lp_stats(c, &lst);
+ ubifs_msg("current lprops statistics dump");
+ dbg_dump_lstats(&d->saved_lst);
+ spin_lock(&c->space_lock);
+ dbg_dump_budg(c);
+ spin_unlock(&c->space_lock);
+ dump_stack();
+ return -EINVAL;
+}
+
+/**
* dbg_check_synced_i_size - check synchronized inode size.
* @inode: inode to check
*
@@ -1349,7 +1407,7 @@ int dbg_check_tnc(struct ubifs_info *c, int extra)
* @c: UBIFS file-system description object
* @leaf_cb: called for each leaf node
* @znode_cb: called for each indexing node
- * @priv: private date which is passed to callbacks
+ * @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
@@ -2409,7 +2467,7 @@ void ubifs_debugging_exit(struct ubifs_info *c)
* Root directory for UBIFS stuff in debugfs. Contains sub-directories which
* contain the stuff specific to particular file-system mounts.
*/
-static struct dentry *debugfs_rootdir;
+static struct dentry *dfs_rootdir;
/**
* dbg_debugfs_init - initialize debugfs file-system.
@@ -2421,9 +2479,9 @@ static struct dentry *debugfs_rootdir;
*/
int dbg_debugfs_init(void)
{
- debugfs_rootdir = debugfs_create_dir("ubifs", NULL);
- if (IS_ERR(debugfs_rootdir)) {
- int err = PTR_ERR(debugfs_rootdir);
+ dfs_rootdir = debugfs_create_dir("ubifs", NULL);
+ if (IS_ERR(dfs_rootdir)) {
+ int err = PTR_ERR(dfs_rootdir);
ubifs_err("cannot create \"ubifs\" debugfs directory, "
"error %d\n", err);
return err;
@@ -2437,7 +2495,7 @@ int dbg_debugfs_init(void)
*/
void dbg_debugfs_exit(void)
{
- debugfs_remove(debugfs_rootdir);
+ debugfs_remove(dfs_rootdir);
}
static int open_debugfs_file(struct inode *inode, struct file *file)
@@ -2452,13 +2510,13 @@ static ssize_t write_debugfs_file(struct file *file, const char __user *buf,
struct ubifs_info *c = file->private_data;
struct ubifs_debug_info *d = c->dbg;
- if (file->f_path.dentry == d->dump_lprops)
+ if (file->f_path.dentry == d->dfs_dump_lprops)
dbg_dump_lprops(c);
- else if (file->f_path.dentry == d->dump_budg) {
+ else if (file->f_path.dentry == d->dfs_dump_budg) {
spin_lock(&c->space_lock);
dbg_dump_budg(c);
spin_unlock(&c->space_lock);
- } else if (file->f_path.dentry == d->dump_tnc) {
+ } else if (file->f_path.dentry == d->dfs_dump_tnc) {
mutex_lock(&c->tnc_mutex);
dbg_dump_tnc(c);
mutex_unlock(&c->tnc_mutex);
@@ -2469,7 +2527,7 @@ static ssize_t write_debugfs_file(struct file *file, const char __user *buf,
return count;
}
-static const struct file_operations debugfs_fops = {
+static const struct file_operations dfs_fops = {
.open = open_debugfs_file,
.write = write_debugfs_file,
.owner = THIS_MODULE,
@@ -2494,36 +2552,32 @@ int dbg_debugfs_init_fs(struct ubifs_info *c)
struct dentry *dent;
struct ubifs_debug_info *d = c->dbg;
- sprintf(d->debugfs_dir_name, "ubi%d_%d", c->vi.ubi_num, c->vi.vol_id);
- d->debugfs_dir = debugfs_create_dir(d->debugfs_dir_name,
- debugfs_rootdir);
- if (IS_ERR(d->debugfs_dir)) {
- err = PTR_ERR(d->debugfs_dir);
+ sprintf(d->dfs_dir_name, "ubi%d_%d", c->vi.ubi_num, c->vi.vol_id);
+ d->dfs_dir = debugfs_create_dir(d->dfs_dir_name, dfs_rootdir);
+ if (IS_ERR(d->dfs_dir)) {
+ err = PTR_ERR(d->dfs_dir);
ubifs_err("cannot create \"%s\" debugfs directory, error %d\n",
- d->debugfs_dir_name, err);
+ d->dfs_dir_name, err);
goto out;
}
fname = "dump_lprops";
- dent = debugfs_create_file(fname, S_IWUGO, d->debugfs_dir, c,
- &debugfs_fops);
+ dent = debugfs_create_file(fname, S_IWUGO, d->dfs_dir, c, &dfs_fops);
if (IS_ERR(dent))
goto out_remove;
- d->dump_lprops = dent;
+ d->dfs_dump_lprops = dent;
fname = "dump_budg";
- dent = debugfs_create_file(fname, S_IWUGO, d->debugfs_dir, c,
- &debugfs_fops);
+ dent = debugfs_create_file(fname, S_IWUGO, d->dfs_dir, c, &dfs_fops);
if (IS_ERR(dent))
goto out_remove;
- d->dump_budg = dent;
+ d->dfs_dump_budg = dent;
fname = "dump_tnc";
- dent = debugfs_create_file(fname, S_IWUGO, d->debugfs_dir, c,
- &debugfs_fops);
+ dent = debugfs_create_file(fname, S_IWUGO, d->dfs_dir, c, &dfs_fops);
if (IS_ERR(dent))
goto out_remove;
- d->dump_tnc = dent;
+ d->dfs_dump_tnc = dent;
return 0;
@@ -2531,7 +2585,7 @@ out_remove:
err = PTR_ERR(dent);
ubifs_err("cannot create \"%s\" debugfs directory, error %d\n",
fname, err);
- debugfs_remove_recursive(d->debugfs_dir);
+ debugfs_remove_recursive(d->dfs_dir);
out:
return err;
}
@@ -2542,7 +2596,7 @@ out:
*/
void dbg_debugfs_exit_fs(struct ubifs_info *c)
{
- debugfs_remove_recursive(c->dbg->debugfs_dir);
+ debugfs_remove_recursive(c->dbg->dfs_dir);
}
#endif /* CONFIG_UBIFS_FS_DEBUG */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 20:07:25 +0100