2 * Copyright (c) International Business Machines Corp., 2006
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * Author: Artem Bityutskiy (Битюцкий Артём)
22 * This file contains implementation of volume creation, deletion, updating and
26 #include <linux/err.h>
27 #include <asm/div64.h>
30 #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID
31 static void paranoid_check_volumes(struct ubi_device *ubi);
33 #define paranoid_check_volumes(ubi)
36 static ssize_t vol_attribute_show(struct device *dev,
37 struct device_attribute *attr, char *buf);
39 /* Device attributes corresponding to files in '/<sysfs>/class/ubi/ubiX_Y' */
40 static struct device_attribute attr_vol_reserved_ebs =
41 __ATTR(reserved_ebs, S_IRUGO, vol_attribute_show, NULL);
42 static struct device_attribute attr_vol_type =
43 __ATTR(type, S_IRUGO, vol_attribute_show, NULL);
44 static struct device_attribute attr_vol_name =
45 __ATTR(name, S_IRUGO, vol_attribute_show, NULL);
46 static struct device_attribute attr_vol_corrupted =
47 __ATTR(corrupted, S_IRUGO, vol_attribute_show, NULL);
48 static struct device_attribute attr_vol_alignment =
49 __ATTR(alignment, S_IRUGO, vol_attribute_show, NULL);
50 static struct device_attribute attr_vol_usable_eb_size =
51 __ATTR(usable_eb_size, S_IRUGO, vol_attribute_show, NULL);
52 static struct device_attribute attr_vol_data_bytes =
53 __ATTR(data_bytes, S_IRUGO, vol_attribute_show, NULL);
54 static struct device_attribute attr_vol_upd_marker =
55 __ATTR(upd_marker, S_IRUGO, vol_attribute_show, NULL);
58 * "Show" method for files in '/<sysfs>/class/ubi/ubiX_Y/'.
60 * Consider a situation:
61 * A. process 1 opens a sysfs file related to volume Y, say
62 * /<sysfs>/class/ubi/ubiX_Y/reserved_ebs;
63 * B. process 2 removes volume Y;
64 * C. process 1 starts reading the /<sysfs>/class/ubi/ubiX_Y/reserved_ebs file;
66 * What we want to do in a situation like that is to return error when the file
67 * is read. This is done by means of the 'removed' flag and the 'vol_lock' of
68 * the UBI volume description object.
70 static ssize_t vol_attribute_show(struct device *dev,
71 struct device_attribute *attr, char *buf)
75 struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
77 spin_lock(&vol->ubi->volumes_lock);
79 spin_unlock(&vol->ubi->volumes_lock);
82 if (attr == &attr_vol_reserved_ebs)
83 ret = sprintf(buf, "%d\n", vol->reserved_pebs);
84 else if (attr == &attr_vol_type) {
87 if (vol->vol_type == UBI_DYNAMIC_VOLUME)
91 ret = sprintf(buf, "%s\n", tp);
92 } else if (attr == &attr_vol_name)
93 ret = sprintf(buf, "%s\n", vol->name);
94 else if (attr == &attr_vol_corrupted)
95 ret = sprintf(buf, "%d\n", vol->corrupted);
96 else if (attr == &attr_vol_alignment)
97 ret = sprintf(buf, "%d\n", vol->alignment);
98 else if (attr == &attr_vol_usable_eb_size) {
99 ret = sprintf(buf, "%d\n", vol->usable_leb_size);
100 } else if (attr == &attr_vol_data_bytes)
101 ret = sprintf(buf, "%lld\n", vol->used_bytes);
102 else if (attr == &attr_vol_upd_marker)
103 ret = sprintf(buf, "%d\n", vol->upd_marker);
106 spin_unlock(&vol->ubi->volumes_lock);
110 /* Release method for volume devices */
111 static void vol_release(struct device *dev)
113 struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
114 ubi_assert(vol->removed);
119 * volume_sysfs_init - initialize sysfs for new volume.
120 * @ubi: UBI device description object
121 * @vol: volume description object
123 * This function returns zero in case of success and a negative error code in
126 * Note, this function does not free allocated resources in case of failure -
127 * the caller does it. This is because this would cause release() here and the
130 static int volume_sysfs_init(struct ubi_device *ubi, struct ubi_volume *vol)
134 err = device_create_file(&vol->dev, &attr_vol_reserved_ebs);
137 err = device_create_file(&vol->dev, &attr_vol_type);
140 err = device_create_file(&vol->dev, &attr_vol_name);
143 err = device_create_file(&vol->dev, &attr_vol_corrupted);
146 err = device_create_file(&vol->dev, &attr_vol_alignment);
149 err = device_create_file(&vol->dev, &attr_vol_usable_eb_size);
152 err = device_create_file(&vol->dev, &attr_vol_data_bytes);
155 err = device_create_file(&vol->dev, &attr_vol_upd_marker);
162 * volume_sysfs_close - close sysfs for a volume.
163 * @vol: volume description object
165 static void volume_sysfs_close(struct ubi_volume *vol)
167 device_remove_file(&vol->dev, &attr_vol_upd_marker);
168 device_remove_file(&vol->dev, &attr_vol_data_bytes);
169 device_remove_file(&vol->dev, &attr_vol_usable_eb_size);
170 device_remove_file(&vol->dev, &attr_vol_alignment);
171 device_remove_file(&vol->dev, &attr_vol_corrupted);
172 device_remove_file(&vol->dev, &attr_vol_name);
173 device_remove_file(&vol->dev, &attr_vol_type);
174 device_remove_file(&vol->dev, &attr_vol_reserved_ebs);
175 device_unregister(&vol->dev);
179 * ubi_create_volume - create volume.
180 * @ubi: UBI device description object
181 * @req: volume creation request
183 * This function creates volume described by @req. If @req->vol_id id
184 * %UBI_VOL_NUM_AUTO, this function automatically assigne ID to the new volume
185 * and saves it in @req->vol_id. Returns zero in case of success and a negative
186 * error code in case of failure.
188 int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
190 int i, err, vol_id = req->vol_id;
191 struct ubi_volume *vol;
192 struct ubi_vtbl_record vtbl_rec;
198 vol = kzalloc(sizeof(struct ubi_volume), GFP_KERNEL);
202 spin_lock(&ubi->volumes_lock);
204 if (vol_id == UBI_VOL_NUM_AUTO) {
205 /* Find unused volume ID */
206 dbg_msg("search for vacant volume ID");
207 for (i = 0; i < ubi->vtbl_slots; i++)
208 if (!ubi->volumes[i]) {
213 if (vol_id == UBI_VOL_NUM_AUTO) {
214 dbg_err("out of volume IDs");
218 req->vol_id = vol_id;
221 dbg_msg("volume ID %d, %llu bytes, type %d, name %s",
222 vol_id, (unsigned long long)req->bytes,
223 (int)req->vol_type, req->name);
225 /* Ensure that this volume does not exist */
227 if (ubi->volumes[vol_id]) {
228 dbg_err("volume %d already exists", vol_id);
232 /* Ensure that the name is unique */
233 for (i = 0; i < ubi->vtbl_slots; i++)
234 if (ubi->volumes[i] &&
235 ubi->volumes[i]->name_len == req->name_len &&
236 !strcmp(ubi->volumes[i]->name, req->name)) {
237 dbg_err("volume \"%s\" exists (ID %d)", req->name, i);
241 /* Calculate how many eraseblocks are requested */
242 vol->usable_leb_size = ubi->leb_size - ubi->leb_size % req->alignment;
244 if (do_div(bytes, vol->usable_leb_size))
245 vol->reserved_pebs = 1;
246 vol->reserved_pebs += bytes;
248 /* Reserve physical eraseblocks */
249 if (vol->reserved_pebs > ubi->avail_pebs) {
250 dbg_err("not enough PEBs, only %d available", ubi->avail_pebs);
254 ubi->avail_pebs -= vol->reserved_pebs;
255 ubi->rsvd_pebs += vol->reserved_pebs;
257 vol->vol_id = vol_id;
258 vol->alignment = req->alignment;
259 vol->data_pad = ubi->leb_size % vol->alignment;
260 vol->vol_type = req->vol_type;
261 vol->name_len = req->name_len;
262 memcpy(vol->name, req->name, vol->name_len + 1);
265 ubi->volumes[vol_id] = vol;
266 spin_unlock(&ubi->volumes_lock);
269 * Finish all pending erases because there may be some LEBs belonging
270 * to the same volume ID.
272 err = ubi_wl_flush(ubi);
276 vol->eba_tbl = kmalloc(vol->reserved_pebs * sizeof(int), GFP_KERNEL);
282 for (i = 0; i < vol->reserved_pebs; i++)
283 vol->eba_tbl[i] = UBI_LEB_UNMAPPED;
285 if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
286 vol->used_ebs = vol->reserved_pebs;
287 vol->last_eb_bytes = vol->usable_leb_size;
289 (long long)vol->used_ebs * vol->usable_leb_size;
291 bytes = vol->used_bytes;
292 vol->last_eb_bytes = do_div(bytes, vol->usable_leb_size);
293 vol->used_ebs = bytes;
294 if (vol->last_eb_bytes)
297 vol->last_eb_bytes = vol->usable_leb_size;
300 /* Register character device for the volume */
301 cdev_init(&vol->cdev, &ubi_vol_cdev_operations);
302 vol->cdev.owner = THIS_MODULE;
303 err = cdev_add(&vol->cdev, MKDEV(ubi->major, vol_id + 1), 1);
305 ubi_err("cannot add character device for volume %d", vol_id);
309 err = ubi_create_gluebi(ubi, vol);
313 vol->dev.release = vol_release;
314 vol->dev.parent = &ubi->dev;
315 vol->dev.devt = MKDEV(ubi->major, vol->vol_id + 1);
316 vol->dev.class = ubi_class;
317 sprintf(&vol->dev.bus_id[0], "%s_%d", ubi->ubi_name, vol->vol_id);
318 err = device_register(&vol->dev);
322 err = volume_sysfs_init(ubi, vol);
326 /* Fill volume table record */
327 memset(&vtbl_rec, 0, sizeof(struct ubi_vtbl_record));
328 vtbl_rec.reserved_pebs = cpu_to_be32(vol->reserved_pebs);
329 vtbl_rec.alignment = cpu_to_be32(vol->alignment);
330 vtbl_rec.data_pad = cpu_to_be32(vol->data_pad);
331 vtbl_rec.name_len = cpu_to_be16(vol->name_len);
332 if (vol->vol_type == UBI_DYNAMIC_VOLUME)
333 vtbl_rec.vol_type = UBI_VID_DYNAMIC;
335 vtbl_rec.vol_type = UBI_VID_STATIC;
336 memcpy(vtbl_rec.name, vol->name, vol->name_len + 1);
338 err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
342 spin_lock(&ubi->volumes_lock);
345 spin_unlock(&ubi->volumes_lock);
347 paranoid_check_volumes(ubi);
351 err = ubi_destroy_gluebi(vol);
353 cdev_del(&vol->cdev);
357 spin_lock(&ubi->volumes_lock);
358 ubi->rsvd_pebs -= vol->reserved_pebs;
359 ubi->avail_pebs += vol->reserved_pebs;
360 ubi->volumes[vol_id] = NULL;
362 spin_unlock(&ubi->volumes_lock);
367 * We are registered, so @vol is destroyed in the release function and
368 * we have to de-initialize differently.
371 err = ubi_destroy_gluebi(vol);
372 cdev_del(&vol->cdev);
374 spin_lock(&ubi->volumes_lock);
375 ubi->rsvd_pebs -= vol->reserved_pebs;
376 ubi->avail_pebs += vol->reserved_pebs;
377 ubi->volumes[vol_id] = NULL;
378 spin_unlock(&ubi->volumes_lock);
379 volume_sysfs_close(vol);
384 * ubi_remove_volume - remove volume.
385 * @desc: volume descriptor
387 * This function removes volume described by @desc. The volume has to be opened
388 * in "exclusive" mode. Returns zero in case of success and a negative error
389 * code in case of failure.
391 int ubi_remove_volume(struct ubi_volume_desc *desc)
393 struct ubi_volume *vol = desc->vol;
394 struct ubi_device *ubi = vol->ubi;
395 int i, err, vol_id = vol->vol_id, reserved_pebs = vol->reserved_pebs;
397 dbg_msg("remove UBI volume %d", vol_id);
398 ubi_assert(desc->mode == UBI_EXCLUSIVE);
399 ubi_assert(vol == ubi->volumes[vol_id]);
404 err = ubi_destroy_gluebi(vol);
408 err = ubi_change_vtbl_record(ubi, vol_id, NULL);
412 for (i = 0; i < vol->reserved_pebs; i++) {
413 err = ubi_eba_unmap_leb(ubi, vol_id, i);
418 spin_lock(&ubi->volumes_lock);
420 ubi->volumes[vol_id] = NULL;
421 spin_unlock(&ubi->volumes_lock);
425 cdev_del(&vol->cdev);
426 volume_sysfs_close(vol);
429 spin_lock(&ubi->volumes_lock);
430 ubi->rsvd_pebs -= reserved_pebs;
431 ubi->avail_pebs += reserved_pebs;
432 i = ubi->beb_rsvd_level - ubi->beb_rsvd_pebs;
434 i = ubi->avail_pebs >= i ? i : ubi->avail_pebs;
435 ubi->avail_pebs -= i;
437 ubi->beb_rsvd_pebs += i;
439 ubi_msg("reserve more %d PEBs", i);
442 spin_unlock(&ubi->volumes_lock);
444 paranoid_check_volumes(ubi);
445 module_put(THIS_MODULE);
450 * ubi_resize_volume - re-size volume.
451 * @desc: volume descriptor
452 * @reserved_pebs: new size in physical eraseblocks
454 * This function returns zero in case of success, and a negative error code in
457 int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
459 int i, err, pebs, *new_mapping;
460 struct ubi_volume *vol = desc->vol;
461 struct ubi_device *ubi = vol->ubi;
462 struct ubi_vtbl_record vtbl_rec;
463 int vol_id = vol->vol_id;
468 dbg_msg("re-size volume %d to from %d to %d PEBs",
469 vol_id, vol->reserved_pebs, reserved_pebs);
470 ubi_assert(desc->mode == UBI_EXCLUSIVE);
471 ubi_assert(vol == ubi->volumes[vol_id]);
473 if (vol->vol_type == UBI_STATIC_VOLUME &&
474 reserved_pebs < vol->used_ebs) {
475 dbg_err("too small size %d, %d LEBs contain data",
476 reserved_pebs, vol->used_ebs);
480 /* If the size is the same, we have nothing to do */
481 if (reserved_pebs == vol->reserved_pebs)
484 new_mapping = kmalloc(reserved_pebs * sizeof(int), GFP_KERNEL);
488 for (i = 0; i < reserved_pebs; i++)
489 new_mapping[i] = UBI_LEB_UNMAPPED;
491 /* Reserve physical eraseblocks */
492 pebs = reserved_pebs - vol->reserved_pebs;
494 spin_lock(&ubi->volumes_lock);
495 if (pebs > ubi->avail_pebs) {
496 dbg_err("not enough PEBs: requested %d, available %d",
497 pebs, ubi->avail_pebs);
498 spin_unlock(&ubi->volumes_lock);
502 ubi->avail_pebs -= pebs;
503 ubi->rsvd_pebs += pebs;
504 for (i = 0; i < vol->reserved_pebs; i++)
505 new_mapping[i] = vol->eba_tbl[i];
507 vol->eba_tbl = new_mapping;
508 spin_unlock(&ubi->volumes_lock);
511 /* Change volume table record */
512 memcpy(&vtbl_rec, &ubi->vtbl[vol_id], sizeof(struct ubi_vtbl_record));
513 vtbl_rec.reserved_pebs = cpu_to_be32(reserved_pebs);
514 err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
519 for (i = 0; i < -pebs; i++) {
520 err = ubi_eba_unmap_leb(ubi, vol_id, reserved_pebs + i);
524 spin_lock(&ubi->volumes_lock);
525 ubi->rsvd_pebs += pebs;
526 ubi->avail_pebs -= pebs;
527 pebs = ubi->beb_rsvd_level - ubi->beb_rsvd_pebs;
529 pebs = ubi->avail_pebs >= pebs ? pebs : ubi->avail_pebs;
530 ubi->avail_pebs -= pebs;
531 ubi->rsvd_pebs += pebs;
532 ubi->beb_rsvd_pebs += pebs;
534 ubi_msg("reserve more %d PEBs", pebs);
536 for (i = 0; i < reserved_pebs; i++)
537 new_mapping[i] = vol->eba_tbl[i];
539 vol->eba_tbl = new_mapping;
540 spin_unlock(&ubi->volumes_lock);
543 vol->reserved_pebs = reserved_pebs;
544 if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
545 vol->used_ebs = reserved_pebs;
546 vol->last_eb_bytes = vol->usable_leb_size;
548 (long long)vol->used_ebs * vol->usable_leb_size;
551 paranoid_check_volumes(ubi);
556 spin_lock(&ubi->volumes_lock);
557 ubi->rsvd_pebs -= pebs;
558 ubi->avail_pebs += pebs;
559 spin_unlock(&ubi->volumes_lock);
567 * ubi_add_volume - add volume.
568 * @ubi: UBI device description object
571 * This function adds an existin volume and initializes all its data
572 * structures. Returnes zero in case of success and a negative error code in
575 int ubi_add_volume(struct ubi_device *ubi, int vol_id)
578 struct ubi_volume *vol = ubi->volumes[vol_id];
580 dbg_msg("add volume %d", vol_id);
581 ubi_dbg_dump_vol_info(vol);
584 /* Register character device for the volume */
585 cdev_init(&vol->cdev, &ubi_vol_cdev_operations);
586 vol->cdev.owner = THIS_MODULE;
587 err = cdev_add(&vol->cdev, MKDEV(ubi->major, vol->vol_id + 1), 1);
589 ubi_err("cannot add character device for volume %d", vol_id);
593 err = ubi_create_gluebi(ubi, vol);
597 vol->dev.release = vol_release;
598 vol->dev.parent = &ubi->dev;
599 vol->dev.devt = MKDEV(ubi->major, vol->vol_id + 1);
600 vol->dev.class = ubi_class;
601 sprintf(&vol->dev.bus_id[0], "%s_%d", ubi->ubi_name, vol->vol_id);
602 err = device_register(&vol->dev);
606 err = volume_sysfs_init(ubi, vol);
608 cdev_del(&vol->cdev);
609 err = ubi_destroy_gluebi(vol);
610 volume_sysfs_close(vol);
614 paranoid_check_volumes(ubi);
618 err = ubi_destroy_gluebi(vol);
620 cdev_del(&vol->cdev);
625 * ubi_free_volume - free volume.
626 * @ubi: UBI device description object
629 * This function frees all resources for volume @vol_id but does not remove it.
630 * Used only when the UBI device is detached.
632 void ubi_free_volume(struct ubi_device *ubi, int vol_id)
635 struct ubi_volume *vol = ubi->volumes[vol_id];
637 dbg_msg("free volume %d", vol_id);
641 err = ubi_destroy_gluebi(vol);
642 ubi->volumes[vol_id] = NULL;
643 cdev_del(&vol->cdev);
644 volume_sysfs_close(vol);
647 #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID
650 * paranoid_check_volume - check volume information.
651 * @ubi: UBI device description object
654 static void paranoid_check_volume(struct ubi_device *ubi, int vol_id)
656 int idx = vol_id2idx(ubi, vol_id);
657 int reserved_pebs, alignment, data_pad, vol_type, name_len, upd_marker;
658 const struct ubi_volume *vol;
662 spin_lock(&ubi->volumes_lock);
663 reserved_pebs = be32_to_cpu(ubi->vtbl[vol_id].reserved_pebs);
664 vol = ubi->volumes[idx];
668 ubi_err("no volume info, but volume exists");
671 spin_unlock(&ubi->volumes_lock);
675 if (vol->exclusive) {
677 * The volume may be being created at the moment, do not check
678 * it (e.g., it may be in the middle of ubi_create_volume().
680 spin_unlock(&ubi->volumes_lock);
684 if (vol->reserved_pebs < 0 || vol->alignment < 0 || vol->data_pad < 0 ||
686 ubi_err("negative values");
689 if (vol->alignment > ubi->leb_size || vol->alignment == 0) {
690 ubi_err("bad alignment");
694 n = vol->alignment % ubi->min_io_size;
695 if (vol->alignment != 1 && n) {
696 ubi_err("alignment is not multiple of min I/O unit");
700 n = ubi->leb_size % vol->alignment;
701 if (vol->data_pad != n) {
702 ubi_err("bad data_pad, has to be %lld", n);
706 if (vol->vol_type != UBI_DYNAMIC_VOLUME &&
707 vol->vol_type != UBI_STATIC_VOLUME) {
708 ubi_err("bad vol_type");
712 if (vol->upd_marker != 0 && vol->upd_marker != 1) {
713 ubi_err("bad upd_marker");
717 if (vol->upd_marker && vol->corrupted) {
718 dbg_err("update marker and corrupted simultaneously");
722 if (vol->reserved_pebs > ubi->good_peb_count) {
723 ubi_err("too large reserved_pebs");
727 n = ubi->leb_size - vol->data_pad;
728 if (vol->usable_leb_size != ubi->leb_size - vol->data_pad) {
729 ubi_err("bad usable_leb_size, has to be %lld", n);
733 if (vol->name_len > UBI_VOL_NAME_MAX) {
734 ubi_err("too long volume name, max is %d", UBI_VOL_NAME_MAX);
739 ubi_err("NULL volume name");
743 n = strnlen(vol->name, vol->name_len + 1);
744 if (n != vol->name_len) {
745 ubi_err("bad name_len %lld", n);
749 n = (long long)vol->used_ebs * vol->usable_leb_size;
750 if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
751 if (vol->corrupted != 0) {
752 ubi_err("corrupted dynamic volume");
755 if (vol->used_ebs != vol->reserved_pebs) {
756 ubi_err("bad used_ebs");
759 if (vol->last_eb_bytes != vol->usable_leb_size) {
760 ubi_err("bad last_eb_bytes");
763 if (vol->used_bytes != n) {
764 ubi_err("bad used_bytes");
768 if (vol->corrupted != 0 && vol->corrupted != 1) {
769 ubi_err("bad corrupted");
772 if (vol->used_ebs < 0 || vol->used_ebs > vol->reserved_pebs) {
773 ubi_err("bad used_ebs");
776 if (vol->last_eb_bytes < 0 ||
777 vol->last_eb_bytes > vol->usable_leb_size) {
778 ubi_err("bad last_eb_bytes");
781 if (vol->used_bytes < 0 || vol->used_bytes > n ||
782 vol->used_bytes < n - vol->usable_leb_size) {
783 ubi_err("bad used_bytes");
788 alignment = be32_to_cpu(ubi->vtbl[vol_id].alignment);
789 data_pad = be32_to_cpu(ubi->vtbl[vol_id].data_pad);
790 name_len = be16_to_cpu(ubi->vtbl[vol_id].name_len);
791 upd_marker = ubi->vtbl[vol_id].upd_marker;
792 name = &ubi->vtbl[vol_id].name[0];
793 if (ubi->vtbl[vol_id].vol_type == UBI_VID_DYNAMIC)
794 vol_type = UBI_DYNAMIC_VOLUME;
796 vol_type = UBI_STATIC_VOLUME;
798 if (alignment != vol->alignment || data_pad != vol->data_pad ||
799 upd_marker != vol->upd_marker || vol_type != vol->vol_type ||
800 name_len!= vol->name_len || strncmp(name, vol->name, name_len)) {
801 ubi_err("volume info is different");
805 spin_unlock(&ubi->volumes_lock);
809 ubi_err("paranoid check failed for volume %d", vol_id);
810 ubi_dbg_dump_vol_info(vol);
811 ubi_dbg_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);
812 spin_unlock(&ubi->volumes_lock);
817 * paranoid_check_volumes - check information about all volumes.
818 * @ubi: UBI device description object
820 static void paranoid_check_volumes(struct ubi_device *ubi)
824 mutex_lock(&ubi->vtbl_mutex);
825 for (i = 0; i < ubi->vtbl_slots; i++)
826 paranoid_check_volume(ubi, i);
827 mutex_unlock(&ubi->vtbl_mutex);