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Diffstat (limited to 'fs/ubifs/super.c')
-rw-r--r--fs/ubifs/super.c37
1 files changed, 27 insertions, 10 deletions
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index c5c98355459..faa44f90608 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -421,8 +421,8 @@ static int ubifs_show_options(struct seq_file *s, struct vfsmount *mnt)
seq_printf(s, ",no_chk_data_crc");
if (c->mount_opts.override_compr) {
- seq_printf(s, ",compr=");
- seq_printf(s, ubifs_compr_name(c->mount_opts.compr_type));
+ seq_printf(s, ",compr=%s",
+ ubifs_compr_name(c->mount_opts.compr_type));
}
return 0;
@@ -700,6 +700,8 @@ static int init_constants_sb(struct ubifs_info *c)
if (err)
return err;
+ /* Initialize effective LEB size used in budgeting calculations */
+ c->idx_leb_size = c->leb_size - c->max_idx_node_sz;
return 0;
}
@@ -716,6 +718,7 @@ static void init_constants_master(struct ubifs_info *c)
long long tmp64;
c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
+ c->report_rp_size = ubifs_reported_space(c, c->rp_size);
/*
* Calculate total amount of FS blocks. This number is not used
@@ -1201,7 +1204,7 @@ static int mount_ubifs(struct ubifs_info *c)
goto out_cbuf;
/* Create background thread */
- c->bgt = kthread_create(ubifs_bg_thread, c, c->bgt_name);
+ c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name);
if (IS_ERR(c->bgt)) {
err = PTR_ERR(c->bgt);
c->bgt = NULL;
@@ -1318,11 +1321,15 @@ static int mount_ubifs(struct ubifs_info *c)
else {
c->need_recovery = 0;
ubifs_msg("recovery completed");
- /* GC LEB has to be empty and taken at this point */
- ubifs_assert(c->lst.taken_empty_lebs == 1);
+ /*
+ * GC LEB has to be empty and taken at this point. But
+ * the journal head LEBs may also be accounted as
+ * "empty taken" if they are empty.
+ */
+ ubifs_assert(c->lst.taken_empty_lebs > 0);
}
} else
- ubifs_assert(c->lst.taken_empty_lebs == 1);
+ ubifs_assert(c->lst.taken_empty_lebs > 0);
err = dbg_check_filesystem(c);
if (err)
@@ -1344,8 +1351,9 @@ static int mount_ubifs(struct ubifs_info *c)
x = (long long)c->log_lebs * c->leb_size + c->max_bud_bytes;
ubifs_msg("journal size: %lld bytes (%lld KiB, %lld MiB, %d "
"LEBs)", x, x >> 10, x >> 20, c->log_lebs + c->max_bud_cnt);
- ubifs_msg("media format: %d (latest is %d)",
- c->fmt_version, UBIFS_FORMAT_VERSION);
+ ubifs_msg("media format: w%d/r%d (latest is w%d/r%d)",
+ c->fmt_version, c->ro_compat_version,
+ UBIFS_FORMAT_VERSION, UBIFS_RO_COMPAT_VERSION);
ubifs_msg("default compressor: %s", ubifs_compr_name(c->default_compr));
ubifs_msg("reserved for root: %llu bytes (%llu KiB)",
c->report_rp_size, c->report_rp_size >> 10);
@@ -1485,6 +1493,15 @@ static int ubifs_remount_rw(struct ubifs_info *c)
{
int err, lnum;
+ if (c->rw_incompat) {
+ ubifs_err("the file-system is not R/W-compatible");
+ ubifs_msg("on-flash format version is w%d/r%d, but software "
+ "only supports up to version w%d/r%d", c->fmt_version,
+ c->ro_compat_version, UBIFS_FORMAT_VERSION,
+ UBIFS_RO_COMPAT_VERSION);
+ return -EROFS;
+ }
+
mutex_lock(&c->umount_mutex);
dbg_save_space_info(c);
c->remounting_rw = 1;
@@ -1554,7 +1571,7 @@ static int ubifs_remount_rw(struct ubifs_info *c)
ubifs_create_buds_lists(c);
/* Create background thread */
- c->bgt = kthread_create(ubifs_bg_thread, c, c->bgt_name);
+ c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name);
if (IS_ERR(c->bgt)) {
err = PTR_ERR(c->bgt);
c->bgt = NULL;
@@ -1775,7 +1792,7 @@ static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data)
c->bu.buf = NULL;
}
- ubifs_assert(c->lst.taken_empty_lebs == 1);
+ ubifs_assert(c->lst.taken_empty_lebs > 0);
return 0;
}