47 	struct ubi_volume *vol = desc->vol;  in get_exclusive()  local
49 	spin_lock(&vol->ubi->volumes_lock);  in get_exclusive()
50 	users = vol->readers + vol->writers + vol->exclusive + vol->metaonly;  in get_exclusive()
53 		ubi_err(vol->ubi, "%d users for volume %d", users, vol->vol_id);  in get_exclusive()
56 		vol->readers = vol->writers = vol->metaonly = 0;  in get_exclusive()
57 		vol->exclusive = 1;  in get_exclusive()
61 	spin_unlock(&vol->ubi->volumes_lock);  in get_exclusive()
73 	struct ubi_volume *vol = desc->vol;  in revoke_exclusive()  local
75 	spin_lock(&vol->ubi->volumes_lock);  in revoke_exclusive()
76 	ubi_assert(vol->readers == 0 && vol->writers == 0 && vol->metaonly == 0);  in revoke_exclusive()
77 	ubi_assert(vol->exclusive == 1 && desc->mode == UBI_EXCLUSIVE);  in revoke_exclusive()
78 	vol->exclusive = 0;  in revoke_exclusive()
80 		vol->readers = 1;  in revoke_exclusive()
82 		vol->writers = 1;  in revoke_exclusive()
84 		vol->metaonly = 1;  in revoke_exclusive()
86 		vol->exclusive = 1;  in revoke_exclusive()
87 	spin_unlock(&vol->ubi->volumes_lock);  in revoke_exclusive()
120 	struct ubi_volume *vol = desc->vol;  in vol_cdev_release()  local
123 		vol->ubi->ubi_num, vol->vol_id, desc->mode);  in vol_cdev_release()
125 	if (vol->updating) {  in vol_cdev_release()
126 		ubi_warn(vol->ubi, "update of volume %d not finished, volume is damaged",  in vol_cdev_release()
127 			 vol->vol_id);  in vol_cdev_release()
128 		ubi_assert(!vol->changing_leb);  in vol_cdev_release()
129 		vol->updating = 0;  in vol_cdev_release()
130 		vfree(vol->upd_buf);  in vol_cdev_release()
131 	} else if (vol->changing_leb) {  in vol_cdev_release()
133 			vol->upd_received, vol->upd_bytes, vol->ubi->ubi_num,  in vol_cdev_release()
134 			vol->vol_id);  in vol_cdev_release()
135 		vol->changing_leb = 0;  in vol_cdev_release()
136 		vfree(vol->upd_buf);  in vol_cdev_release()
146 	struct ubi_volume *vol = desc->vol;  in vol_cdev_llseek()  local
148 	if (vol->updating) {  in vol_cdev_llseek()
150 		ubi_err(vol->ubi, "updating");  in vol_cdev_llseek()
154 	return fixed_size_llseek(file, offset, origin, vol->used_bytes);  in vol_cdev_llseek()
161 	struct ubi_device *ubi = desc->vol->ubi;  in vol_cdev_fsync()
175 	struct ubi_volume *vol = desc->vol;  in vol_cdev_read()  local
176 	struct ubi_device *ubi = vol->ubi;  in vol_cdev_read()
182 		count, *offp, vol->vol_id);  in vol_cdev_read()
184 	if (vol->updating) {  in vol_cdev_read()
185 		ubi_err(vol->ubi, "updating");  in vol_cdev_read()
188 	if (vol->upd_marker) {  in vol_cdev_read()
189 		ubi_err(vol->ubi, "damaged volume, update marker is set");  in vol_cdev_read()
192 	if (*offp == vol->used_bytes || count == 0)  in vol_cdev_read()
195 	if (vol->corrupted)  in vol_cdev_read()
196 		dbg_gen("read from corrupted volume %d", vol->vol_id);  in vol_cdev_read()
198 	if (*offp + count > vol->used_bytes)  in vol_cdev_read()
199 		count_save = count = vol->used_bytes - *offp;  in vol_cdev_read()
201 	tbuf_size = vol->usable_leb_size;  in vol_cdev_read()
209 	lnum = div_u64_rem(*offp, vol->usable_leb_size, &off);  in vol_cdev_read()
214 		if (off + len >= vol->usable_leb_size)  in vol_cdev_read()
215 			len = vol->usable_leb_size - off;  in vol_cdev_read()
217 		err = ubi_eba_read_leb(ubi, vol, lnum, tbuf, off, len, 0);  in vol_cdev_read()
222 		if (off == vol->usable_leb_size) {  in vol_cdev_read()
224 			off -= vol->usable_leb_size;  in vol_cdev_read()
252 	struct ubi_volume *vol = desc->vol;  in vol_cdev_direct_write()  local
253 	struct ubi_device *ubi = vol->ubi;  in vol_cdev_direct_write()
258 	if (!vol->direct_writes)  in vol_cdev_direct_write()
262 		count, *offp, vol->vol_id);  in vol_cdev_direct_write()
264 	if (vol->vol_type == UBI_STATIC_VOLUME)  in vol_cdev_direct_write()
267 	lnum = div_u64_rem(*offp, vol->usable_leb_size, &off);  in vol_cdev_direct_write()
273 	if (*offp + count > vol->used_bytes)  in vol_cdev_direct_write()
274 		count_save = count = vol->used_bytes - *offp;  in vol_cdev_direct_write()
282 	tbuf_size = vol->usable_leb_size;  in vol_cdev_direct_write()
294 		if (off + len >= vol->usable_leb_size)  in vol_cdev_direct_write()
295 			len = vol->usable_leb_size - off;  in vol_cdev_direct_write()
303 		err = ubi_eba_write_leb(ubi, vol, lnum, tbuf, off, len);  in vol_cdev_direct_write()
308 		if (off == vol->usable_leb_size) {  in vol_cdev_direct_write()
310 			off -= vol->usable_leb_size;  in vol_cdev_direct_write()
328 	struct ubi_volume *vol = desc->vol;  in vol_cdev_write()  local
329 	struct ubi_device *ubi = vol->ubi;  in vol_cdev_write()
331 	if (!vol->updating && !vol->changing_leb)  in vol_cdev_write()
334 	if (vol->updating)  in vol_cdev_write()
335 		err = ubi_more_update_data(ubi, vol, buf, count);  in vol_cdev_write()
337 		err = ubi_more_leb_change_data(ubi, vol, buf, count);  in vol_cdev_write()
352 		if (vol->changing_leb) {  in vol_cdev_write()
361 		err = ubi_check_volume(ubi, vol->vol_id);  in vol_cdev_write()
367 				 vol->vol_id, ubi->ubi_num);  in vol_cdev_write()
368 			vol->corrupted = 1;  in vol_cdev_write()
370 		vol->checked = 1;  in vol_cdev_write()
371 		ubi_volume_notify(ubi, vol, UBI_VOLUME_UPDATED);  in vol_cdev_write()
383 	struct ubi_volume *vol = desc->vol;  in vol_cdev_ioctl()  local
384 	struct ubi_device *ubi = vol->ubi;  in vol_cdev_ioctl()
409 		rsvd_bytes = (long long)vol->reserved_pebs *  in vol_cdev_ioctl()
410 					vol->usable_leb_size;  in vol_cdev_ioctl()
420 		err = ubi_start_update(ubi, vol, bytes);  in vol_cdev_ioctl()
422 			ubi_volume_notify(ubi, vol, UBI_VOLUME_UPDATED);  in vol_cdev_ioctl()
441 		    vol->vol_type == UBI_STATIC_VOLUME) {  in vol_cdev_ioctl()
448 		if (!ubi_leb_valid(vol, req.lnum) ||  in vol_cdev_ioctl()
449 		    req.bytes < 0 || req.bytes > vol->usable_leb_size)  in vol_cdev_ioctl()
456 		err = ubi_start_leb_change(ubi, vol, &req);  in vol_cdev_ioctl()
474 		    vol->vol_type == UBI_STATIC_VOLUME) {  in vol_cdev_ioctl()
479 		if (!ubi_leb_valid(vol, lnum)) {  in vol_cdev_ioctl()
484 		dbg_gen("erase LEB %d:%d", vol->vol_id, lnum);  in vol_cdev_ioctl()
485 		err = ubi_eba_unmap_leb(ubi, vol, lnum);  in vol_cdev_ioctl()
549 			desc->vol->direct_writes = !!req.value;  in vol_cdev_ioctl()
746 		if (re->desc->vol->name_len == name_len &&  in rename_volumes()
747 		    !memcmp(re->desc->vol->name, name, name_len)) {  in rename_volumes()
757 			vol_id, re->desc->vol->name, name);  in rename_volumes()
775 			if (re->new_name_len == re1->desc->vol->name_len &&  in rename_volumes()
776 			    !memcmp(re->new_name, re1->desc->vol->name,  in rename_volumes()
777 				    re1->desc->vol->name_len)) {  in rename_volumes()
815 			re1->desc->vol->vol_id, re1->desc->vol->name);  in rename_volumes()
930 		pebs = div_u64(req.bytes + desc->vol->usable_leb_size - 1,  in ubi_cdev_ioctl()
931 			       desc->vol->usable_leb_size);  in ubi_cdev_ioctl()