#include <linux/moduleparam.h>
#include <linux/debugfs.h>
#include <linux/math64.h>
-#include <linux/slab.h>
#ifdef CONFIG_UBIFS_FS_DEBUG
static char dbg_key_buf0[128];
static char dbg_key_buf1[128];
-unsigned int ubifs_msg_flags;
unsigned int ubifs_chk_flags;
unsigned int ubifs_tst_flags;
-module_param_named(debug_msgs, ubifs_msg_flags, uint, S_IRUGO | S_IWUSR);
module_param_named(debug_chks, ubifs_chk_flags, uint, S_IRUGO | S_IWUSR);
module_param_named(debug_tsts, ubifs_tst_flags, uint, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug_msgs, "Debug message type flags");
MODULE_PARM_DESC(debug_chks, "Debug check flags");
MODULE_PARM_DESC(debug_tsts, "Debug special test flags");
printk(KERN_DEBUG "\tflags %#x\n", sup_flags);
printk(KERN_DEBUG "\t big_lpt %u\n",
!!(sup_flags & UBIFS_FLG_BIGLPT));
+ printk(KERN_DEBUG "\t space_fixup %u\n",
+ !!(sup_flags & UBIFS_FLG_SPACE_FIXUP));
printk(KERN_DEBUG "\tmin_io_size %u\n",
le32_to_cpu(sup->min_io_size));
printk(KERN_DEBUG "\tleb_size %u\n",
spin_unlock(&dbg_lock);
}
-void dbg_dump_budg(struct ubifs_info *c)
+void dbg_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi)
{
int i;
struct rb_node *rb;
struct ubifs_gced_idx_leb *idx_gc;
long long available, outstanding, free;
- ubifs_assert(spin_is_locked(&c->space_lock));
+ spin_lock(&c->space_lock);
spin_lock(&dbg_lock);
- printk(KERN_DEBUG "(pid %d) Budgeting info: budg_data_growth %lld, "
- "budg_dd_growth %lld, budg_idx_growth %lld\n", current->pid,
- c->budg_data_growth, c->budg_dd_growth, c->budg_idx_growth);
- printk(KERN_DEBUG "\tdata budget sum %lld, total budget sum %lld, "
- "freeable_cnt %d\n", c->budg_data_growth + c->budg_dd_growth,
- c->budg_data_growth + c->budg_dd_growth + c->budg_idx_growth,
- c->freeable_cnt);
- printk(KERN_DEBUG "\tmin_idx_lebs %d, old_idx_sz %lld, "
- "calc_idx_sz %lld, idx_gc_cnt %d\n", c->min_idx_lebs,
- c->old_idx_sz, c->calc_idx_sz, c->idx_gc_cnt);
+ printk(KERN_DEBUG "(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_DEBUG "\tbudg_data_growth %lld, budg_dd_growth %lld, "
+ "budg_idx_growth %lld\n", bi->data_growth, bi->dd_growth,
+ bi->idx_growth);
+ printk(KERN_DEBUG "\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_DEBUG "\tpage_budget %d, inode_budget %d, dent_budget %d\n",
+ bi->page_budget, bi->inode_budget, bi->dent_budget);
+ printk(KERN_DEBUG "\tnospace %u, nospace_rp %u\n",
+ bi->nospace, bi->nospace_rp);
+ printk(KERN_DEBUG "\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_DEBUG "\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_DEBUG "\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_DEBUG "\tdark_wm %d, dead_wm %d, max_idx_node_sz %d\n",
- 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);
+
/* 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 "\tcommit state %d\n", c->cmt_state);
/* Print budgeting predictions */
- available = ubifs_calc_available(c, c->min_idx_lebs);
- outstanding = c->budg_data_growth + c->budg_dd_growth;
+ 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_DEBUG "Budgeting predictions:\n");
printk(KERN_DEBUG "\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)
if (bud->lnum == lp->lnum) {
int head = 0;
for (i = 0; i < c->jhead_cnt; i++) {
- if (lp->lnum == c->jheads[i].wbuf.lnum) {
+ /*
+ * 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;
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
out:
ubifs_msg("saved lprops statistics dump");
dbg_dump_lstats(&d->saved_lst);
- ubifs_get_lp_stats(c, &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);
-
- spin_lock(&c->space_lock);
- dbg_dump_budg(c);
- spin_unlock(&c->space_lock);
+ ubifs_msg("current budgeting info dump");
+ dbg_dump_budg(c, &c->bi);
dump_stack();
return -EINVAL;
}
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) {
if (!fscki)
return ERR_PTR(-ENOMEM);
+ inode = ilookup(c->vfs_sb, inum);
+
fscki->inum = inum;
- 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);
+ /*
+ * 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;
}
hashb = key_block(c, &sb->key);
if (hasha > hashb) {
- ubifs_err("larger hash %u goes before %u", hasha, hashb);
+ ubifs_err("larger hash %u goes before %u",
+ hasha, hashb);
goto error_dump;
}
}
return 0;
}
-static int invocation_cnt;
-
int dbg_force_in_the_gaps(void)
{
- if (!dbg_force_in_the_gaps_enabled)
+ if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
return 0;
- /* Force in-the-gaps every 8th commit */
- return !((invocation_cnt++) & 0x7);
+
+ return !(random32() & 7);
}
/* Failure mode for recovery testing */
int len, int check)
{
if (in_failure_mode(desc))
- return -EIO;
+ return -EROFS;
return ubi_leb_read(desc, lnum, buf, offset, len, check);
}
int err, failing;
if (in_failure_mode(desc))
- return -EIO;
+ return -EROFS;
failing = do_fail(desc, lnum, 1);
if (failing)
cut_data(buf, len);
if (err)
return err;
if (failing)
- return -EIO;
+ return -EROFS;
return 0;
}
int err;
if (do_fail(desc, lnum, 1))
- return -EIO;
+ return -EROFS;
err = ubi_leb_change(desc, lnum, buf, len, dtype);
if (err)
return err;
if (do_fail(desc, lnum, 1))
- return -EIO;
+ return -EROFS;
return 0;
}
int err;
if (do_fail(desc, lnum, 0))
- return -EIO;
+ return -EROFS;
err = ubi_leb_erase(desc, lnum);
if (err)
return err;
if (do_fail(desc, lnum, 0))
- return -EIO;
+ return -EROFS;
return 0;
}
int err;
if (do_fail(desc, lnum, 0))
- return -EIO;
+ return -EROFS;
err = ubi_leb_unmap(desc, lnum);
if (err)
return err;
if (do_fail(desc, lnum, 0))
- return -EIO;
+ return -EROFS;
return 0;
}
int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum)
{
if (in_failure_mode(desc))
- return -EIO;
+ return -EROFS;
return ubi_is_mapped(desc, lnum);
}
int err;
if (do_fail(desc, lnum, 0))
- return -EIO;
+ return -EROFS;
err = ubi_leb_map(desc, lnum, dtype);
if (err)
return err;
if (do_fail(desc, lnum, 0))
- return -EIO;
+ return -EROFS;
return 0;
}
static int open_debugfs_file(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
- return 0;
+ return nonseekable_open(inode, file);
}
static ssize_t write_debugfs_file(struct file *file, const char __user *buf,
if (file->f_path.dentry == d->dfs_dump_lprops)
dbg_dump_lprops(c);
- 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->dfs_dump_tnc) {
+ else if (file->f_path.dentry == d->dfs_dump_budg)
+ dbg_dump_budg(c, &c->bi);
+ else if (file->f_path.dentry == d->dfs_dump_tnc) {
mutex_lock(&c->tnc_mutex);
dbg_dump_tnc(c);
mutex_unlock(&c->tnc_mutex);
} else
return -EINVAL;
- *ppos += count;
return count;
}
.open = open_debugfs_file,
.write = write_debugfs_file,
.owner = THIS_MODULE,
- .llseek = default_llseek,
+ .llseek = no_llseek,
};
/**
git.openpandora.org / pandora-kernel.git / blobdiff