/* Root UBI "class" object (corresponds to '/<sysfs>/class/ubi/') */
struct class *ubi_class;
-/* Slab cache for lock-tree entries */
-struct kmem_cache *ubi_ltree_slab;
-
/* Slab cache for wear-leveling entries */
struct kmem_cache *ubi_wl_entry_slab;
else if (attr == &dev_total_eraseblocks)
ret = sprintf(buf, "%d\n", ubi->good_peb_count);
else if (attr == &dev_volumes_count)
- ret = sprintf(buf, "%d\n", ubi->vol_count);
+ ret = sprintf(buf, "%d\n", ubi->vol_count - UBI_INT_VOL_COUNT);
else if (attr == &dev_max_ec)
ret = sprintf(buf, "%d\n", ubi->max_ec);
else if (attr == &dev_reserved_for_bad)
int i, err;
dev_t dev;
- mutex_init(&ubi->volumes_mutex);
- spin_lock_init(&ubi->volumes_lock);
-
sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num);
/*
}
/* Similar for the data offset */
- ubi->leb_start = ubi->vid_hdr_offset + ubi->vid_hdr_alsize;
+ ubi->leb_start = ubi->vid_hdr_offset + UBI_EC_HDR_SIZE;
ubi->leb_start = ALIGN(ubi->leb_start, ubi->min_io_size);
dbg_msg("vid_hdr_offset %d", ubi->vid_hdr_offset);
return 0;
}
+/**
+ * autoresize - re-size the volume which has the "auto-resize" flag set.
+ * @ubi: UBI device description object
+ * @vol_id: ID of the volume to re-size
+ *
+ * This function re-sizes the volume marked by the @UBI_VTBL_AUTORESIZE_FLG in
+ * the volume table to the largest possible size. See comments in ubi-header.h
+ * for more description of the flag. Returns zero in case of success and a
+ * negative error code in case of failure.
+ */
+static int autoresize(struct ubi_device *ubi, int vol_id)
+{
+ struct ubi_volume_desc desc;
+ struct ubi_volume *vol = ubi->volumes[vol_id];
+ int err, old_reserved_pebs = vol->reserved_pebs;
+
+ /*
+ * Clear the auto-resize flag in the volume in-memory copy of the
+ * volume table, and 'ubi_resize_volume()' will propogate this change
+ * to the flash.
+ */
+ ubi->vtbl[vol_id].flags &= ~UBI_VTBL_AUTORESIZE_FLG;
+
+ if (ubi->avail_pebs == 0) {
+ struct ubi_vtbl_record vtbl_rec;
+
+ /*
+ * No avalilable PEBs to re-size the volume, clear the flag on
+ * flash and exit.
+ */
+ memcpy(&vtbl_rec, &ubi->vtbl[vol_id],
+ sizeof(struct ubi_vtbl_record));
+ err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
+ if (err)
+ ubi_err("cannot clean auto-resize flag for volume %d",
+ vol_id);
+ } else {
+ desc.vol = vol;
+ err = ubi_resize_volume(&desc,
+ old_reserved_pebs + ubi->avail_pebs);
+ if (err)
+ ubi_err("cannot auto-resize volume %d", vol_id);
+ }
+
+ if (err)
+ return err;
+
+ ubi_msg("volume %d (\"%s\") re-sized from %d to %d LEBs", vol_id,
+ vol->name, old_reserved_pebs, vol->reserved_pebs);
+ return 0;
+}
+
/**
* ubi_attach_mtd_dev - attach an MTD device.
* @mtd_dev: MTD device description object
ubi->mtd = mtd;
ubi->ubi_num = ubi_num;
ubi->vid_hdr_offset = vid_hdr_offset;
+ ubi->autoresize_vol_id = -1;
+
+ mutex_init(&ubi->buf_mutex);
+ mutex_init(&ubi->ckvol_mutex);
+ mutex_init(&ubi->volumes_mutex);
+ spin_lock_init(&ubi->volumes_lock);
dbg_msg("attaching mtd%d to ubi%d: VID header offset %d",
mtd->index, ubi_num, vid_hdr_offset);
if (err)
goto out_free;
- mutex_init(&ubi->buf_mutex);
- mutex_init(&ubi->ckvol_mutex);
ubi->peb_buf1 = vmalloc(ubi->peb_size);
if (!ubi->peb_buf1)
goto out_free;
goto out_free;
}
+ if (ubi->autoresize_vol_id != -1) {
+ err = autoresize(ubi, ubi->autoresize_vol_id);
+ if (err)
+ goto out_detach;
+ }
+
err = uif_init(ubi);
if (err)
goto out_detach;
return 0;
}
-/**
- * ltree_entry_ctor - lock tree entries slab cache constructor.
- * @obj: the lock-tree entry to construct
- * @cache: the lock tree entry slab cache
- * @flags: constructor flags
- */
-static void ltree_entry_ctor(struct kmem_cache *cache, void *obj)
-{
- struct ubi_ltree_entry *le = obj;
-
- le->users = 0;
- init_rwsem(&le->mutex);
-}
-
/**
* find_mtd_device - open an MTD device by its name or number.
* @mtd_dev: name or number of the device
goto out_version;
}
- ubi_ltree_slab = kmem_cache_create("ubi_ltree_slab",
- sizeof(struct ubi_ltree_entry), 0,
- 0, <ree_entry_ctor);
- if (!ubi_ltree_slab)
- goto out_dev_unreg;
-
ubi_wl_entry_slab = kmem_cache_create("ubi_wl_entry_slab",
sizeof(struct ubi_wl_entry),
0, 0, NULL);
if (!ubi_wl_entry_slab)
- goto out_ltree;
+ goto out_dev_unreg;
/* Attach MTD devices */
for (i = 0; i < mtd_devs; i++) {
mutex_unlock(&ubi_devices_mutex);
if (err < 0) {
put_mtd_device(mtd);
- printk(KERN_ERR "UBI error: cannot attach %s\n",
- p->name);
+ printk(KERN_ERR "UBI error: cannot attach mtd%d\n",
+ mtd->index);
goto out_detach;
}
}
mutex_unlock(&ubi_devices_mutex);
}
kmem_cache_destroy(ubi_wl_entry_slab);
-out_ltree:
- kmem_cache_destroy(ubi_ltree_slab);
out_dev_unreg:
misc_deregister(&ubi_ctrl_cdev);
out_version:
mutex_unlock(&ubi_devices_mutex);
}
kmem_cache_destroy(ubi_wl_entry_slab);
- kmem_cache_destroy(ubi_ltree_slab);
misc_deregister(&ubi_ctrl_cdev);
class_remove_file(ubi_class, &ubi_version);
class_destroy(ubi_class);
struct mtd_dev_param *p;
char buf[MTD_PARAM_LEN_MAX];
char *pbuf = &buf[0];
- char *tokens[3] = {NULL, NULL, NULL};
+ char *tokens[2] = {NULL, NULL};
if (!val)
return -EINVAL;
if (buf[len - 1] == '\n')
buf[len - 1] = '\0';
- for (i = 0; i < 3; i++)
+ for (i = 0; i < 2; i++)
tokens[i] = strsep(&pbuf, ",");
if (pbuf) {
projects / linux-2.6 / blobdiff