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;
return 0;
/*
- * Synchronize write buffers, because 'ubifs_run_commit()' does not
- * do this if it waits for an already running commit.
- */
- for (i = 0; i < c->jhead_cnt; i++) {
- err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
- if (err)
- return err;
- }
-
- /*
* VFS calls '->sync_fs()' before synchronizing all dirty inodes and
* pages, so synchronize them first, then commit the journal. Strictly
* speaking, it is not necessary to commit the journal here,
*/
generic_sync_sb_inodes(sb, &wbc);
+ /*
+ * Synchronize write buffers, because 'ubifs_run_commit()' does not
+ * do this if it waits for an already running commit.
+ */
+ for (i = 0; i < c->jhead_cnt; i++) {
+ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
+ if (err)
+ return err;
+ }
+
err = ubifs_run_commit(c);
if (err)
return err;
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;
}
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
token = match_token(p, tokens, args);
switch (token) {
+ /*
+ * %Opt_fast_unmount and %Opt_norm_unmount options are ignored.
+ * We accepte them in order to be backware-compatible. But this
+ * should be removed at some point.
+ */
case Opt_fast_unmount:
c->mount_opts.unmount_mode = 2;
- c->fast_unmount = 1;
break;
case Opt_norm_unmount:
c->mount_opts.unmount_mode = 1;
- c->fast_unmount = 0;
break;
case Opt_bulk_read:
c->mount_opts.bulk_read = 2;
ubifs_err("insufficient free space to mount in read/write mode");
dbg_dump_budg(c);
dbg_dump_lprops(c);
- /*
- * We return %-EINVAL instead of %-ENOSPC because it seems to
- * be the closest error code mentioned in the mount function
- * documentation.
- */
- return -EINVAL;
+ return -ENOSPC;
}
return 0;
}
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;
else {
c->need_recovery = 0;
ubifs_msg("recovery completed");
+ /*
+ * 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 > 0);
- err = dbg_debugfs_init_fs(c);
+ err = dbg_check_filesystem(c);
if (err)
goto out_infos;
- err = dbg_check_filesystem(c);
+ err = dbg_debugfs_init_fs(c);
if (err)
goto out_infos;
c->always_chk_crc = 0;
- /* GC LEB has to be empty and taken at this point */
- ubifs_assert(c->lst.taken_empty_lebs == 1);
ubifs_msg("mounted UBI device %d, volume %d, name \"%s\"",
c->vi.ubi_num, c->vi.vol_id, c->vi.name);
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);
c->uuid[4], c->uuid[5], c->uuid[6], c->uuid[7],
c->uuid[8], c->uuid[9], c->uuid[10], c->uuid[11],
c->uuid[12], c->uuid[13], c->uuid[14], c->uuid[15]);
- dbg_msg("fast unmount: %d", c->fast_unmount);
dbg_msg("big_lpt %d", c->big_lpt);
dbg_msg("log LEBs: %d (%d - %d)",
c->log_lebs, UBIFS_LOG_LNUM, c->log_last);
{
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;
err = ubifs_recover_inl_heads(c, c->sbuf);
if (err)
goto out;
+ } else {
+ /* A readonly mount is not allowed to have orphans */
+ ubifs_assert(c->tot_orphans == 0);
+ err = ubifs_clear_orphans(c);
+ if (err)
+ goto out;
}
if (!(c->mst_node->flags & cpu_to_le32(UBIFS_MST_DIRTY))) {
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;
}
/**
- * commit_on_unmount - commit the journal when un-mounting.
- * @c: UBIFS file-system description object
- *
- * This function is called during un-mounting and re-mounting, and it commits
- * the journal unless the "fast unmount" mode is enabled.
- */
-static void commit_on_unmount(struct ubifs_info *c)
-{
- long long bud_bytes;
-
- if (!c->fast_unmount) {
- dbg_gen("skip committing - fast unmount enabled");
- return;
- }
-
- /*
- * This function is called before the background thread is stopped, so
- * we may race with ongoing commit, which means we have to take
- * @c->bud_lock to access @c->bud_bytes.
- */
- spin_lock(&c->buds_lock);
- bud_bytes = c->bud_bytes;
- spin_unlock(&c->buds_lock);
-
- if (bud_bytes) {
- dbg_gen("run commit");
- ubifs_run_commit(c);
- } else
- dbg_gen("journal is empty, do not run commit");
-}
-
-/**
* ubifs_remount_ro - re-mount in read-only mode.
* @c: UBIFS file-system description object
*
int i, err;
ubifs_assert(!c->need_recovery);
- ubifs_assert(!c->ro_media);
+ ubifs_assert(!(c->vfs_sb->s_flags & MS_RDONLY));
- commit_on_unmount(c);
mutex_lock(&c->umount_mutex);
if (c->bgt) {
kthread_stop(c->bgt);
if (err)
ubifs_ro_mode(c, err);
- err = ubifs_destroy_idx_gc(c);
- if (err)
- ubifs_ro_mode(c, err);
-
free_wbufs(c);
vfree(c->orph_buf);
c->orph_buf = NULL;
if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
if (c->ro_media) {
- ubifs_msg("cannot re-mount R/W, UBIFS is working in "
- "R/O mode");
- return -EINVAL;
+ ubifs_msg("cannot re-mount due to prior errors");
+ return -EROFS;
}
err = ubifs_remount_rw(c);
if (err)
return err;
- } else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY))
+ } else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY)) {
+ if (c->ro_media) {
+ ubifs_msg("cannot re-mount due to prior errors");
+ return -EROFS;
+ }
ubifs_remount_ro(c);
+ }
if (c->bulk_read == 1)
bu_init(c);
c->bu.buf = NULL;
}
- ubifs_assert(c->lst.taken_empty_lebs == 1);
+ ubifs_assert(c->lst.taken_empty_lebs > 0);
return 0;
}
/* 'fill_super()' opens ubi again so we must close it here */
ubi_close_volume(ubi);
- return simple_set_mnt(mnt, sb);
+ simple_set_mnt(mnt, sb);
+ return 0;
out_deact:
- up_write(&sb->s_umount);
- deactivate_super(sb);
+ deactivate_locked_super(sb);
out_close:
ubi_close_volume(ubi);
return err;
static void ubifs_kill_sb(struct super_block *sb)
{
- struct ubifs_info *c = sb->s_fs_info;
-
- /*
- * We do 'commit_on_unmount()' here instead of 'ubifs_put_super()'
- * in order to be outside BKL.
- */
- if (sb->s_root && !(sb->s_flags & MS_RDONLY))
- commit_on_unmount(c);
- /* The un-mount routine is actually done in put_super() */
generic_shutdown_super(sb);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff