mtd/ubi/upd.c

31 #include "ubi.h"
35  * @ubi: UBI device description object
41 static int set_update_marker(struct ubi_device *ubi, struct ubi_volume *vol)
49 		ubi_assert(ubi->vtbl[vol->vol_id].upd_marker);
54 	vtbl_rec = ubi->vtbl[vol->vol_id];
57 	mutex_lock(&ubi->device_mutex);
58 	err = ubi_change_vtbl_record(ubi, vol->vol_id, &vtbl_rec);
60 	mutex_unlock(&ubi->device_mutex);
66  * @ubi: UBI device description object
74 static int clear_update_marker(struct ubi_device *ubi, struct ubi_volume *vol,
82 	vtbl_rec = ubi->vtbl[vol->vol_id];
97 	mutex_lock(&ubi->device_mutex);
98 	err = ubi_change_vtbl_record(ubi, vol->vol_id, &vtbl_rec);
100 	mutex_unlock(&ubi->device_mutex);
106  * @ubi: UBI device description object
114 int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol,
123 	vol->upd_buf = vmalloc(ubi->leb_size);
127 	err = set_update_marker(ubi, vol);
133 		err = ubi_eba_unmap_leb(ubi, vol, i);
138 	err = ubi_wl_flush(ubi, UBI_ALL, UBI_ALL);
143 		err = clear_update_marker(ubi, vol, 0);
161  * @ubi: UBI device description object
168 int ubi_start_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
176 		return ubi_eba_atomic_leb_change(ubi, vol, req->lnum, NULL, 0);
183 	vol->upd_buf = vmalloc(ALIGN((int)req->bytes, ubi->min_io_size));
192  * @ubi: UBI device description object
219 static int write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
225 		int l = ALIGN(len, ubi->min_io_size);
228 		len = ubi_calc_data_len(ubi, buf, l);
234 		err = ubi_eba_write_leb(ubi, vol, lnum, buf, 0, len);
246 		err = ubi_eba_write_leb_st(ubi, vol, lnum, buf, len, used_ebs);
254  * @ubi: UBI device description object
265 int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol,
273 	if (ubi->ro_mode)
309 			err = write_leb(ubi, vol, lnum, vol->upd_buf, flush_len,
337 			err = write_leb(ubi, vol, lnum, vol->upd_buf,
351 		err = ubi_wl_flush(ubi, UBI_ALL, UBI_ALL);
355 		err = clear_update_marker(ubi, vol, vol->upd_bytes);
368  * @ubi: UBI device description object
380 int ubi_more_leb_change_data(struct ubi_device *ubi, struct ubi_volume *vol,
388 	if (ubi->ro_mode)
401 		int len = ALIGN((int)vol->upd_bytes, ubi->min_io_size);
405 		len = ubi_calc_data_len(ubi, vol->upd_buf, len);
406 		err = ubi_eba_atomic_leb_change(ubi, vol, vol->ch_lnum,