Lines Matching full:c
5 * Copyright (C) 2006-2008 Nokia Corporation.
65 * @c: UBIFS file-system description object
73 static int validate_inode(struct ubifs_info *c, const struct inode *inode) in validate_inode() argument
78 if (inode->i_size > c->max_inode_sz) { in validate_inode()
79 ubifs_err(c, "inode is too large (%lld)", in validate_inode()
85 ubifs_err(c, "unknown compression type %d", ui->compr_type); in validate_inode()
98 if (!ubifs_compr_present(c, ui->compr_type)) { in validate_inode()
99 ubifs_warn(c, "inode %lu uses '%s' compression, but it was not compiled in", in validate_inode()
100 inode->i_ino, ubifs_compr_name(c, ui->compr_type)); in validate_inode()
103 err = dbg_check_dir(c, inode); in validate_inode()
112 struct ubifs_info *c = sb->s_fs_info; in ubifs_iget() local
131 ino_key_init(c, &key, inode->i_ino); in ubifs_iget()
133 err = ubifs_tnc_lookup(c, &key, ino); in ubifs_iget()
165 err = validate_inode(c, inode); in ubifs_iget()
255 ubifs_err(c, "inode %lu validation failed, error %d", inode->i_ino, err); in ubifs_iget()
256 ubifs_dump_node(c, ino); in ubifs_iget()
257 ubifs_dump_inode(c, inode); in ubifs_iget()
262 ubifs_err(c, "failed to read inode %lu, error %d", inode->i_ino, err); in ubifs_iget()
298 struct ubifs_info *c = inode->i_sb->s_fs_info; in ubifs_write_inode() local
301 ubifs_assert(c, !ui->xattr); in ubifs_write_inode()
325 err = ubifs_jnl_write_inode(c, inode); in ubifs_write_inode()
327 ubifs_err(c, "can't write inode %lu, error %d", in ubifs_write_inode()
330 err = dbg_check_inode_size(c, inode, ui->ui_size); in ubifs_write_inode()
335 ubifs_release_dirty_inode_budget(c, ui); in ubifs_write_inode()
352 struct ubifs_info *c = inode->i_sb->s_fs_info; in ubifs_evict_inode() local
364 ubifs_assert(c, !atomic_read(&inode->i_count)); in ubifs_evict_inode()
375 err = ubifs_jnl_delete_inode(c, inode); in ubifs_evict_inode()
381 ubifs_err(c, "can't delete inode %lu, error %d", in ubifs_evict_inode()
386 ubifs_release_dirty_inode_budget(c, ui); in ubifs_evict_inode()
389 c->bi.nospace = c->bi.nospace_rp = 0; in ubifs_evict_inode()
399 struct ubifs_info *c = inode->i_sb->s_fs_info; in ubifs_dirty_inode() local
402 ubifs_assert(c, mutex_is_locked(&ui->ui_mutex)); in ubifs_dirty_inode()
411 struct ubifs_info *c = dentry->d_sb->s_fs_info; in ubifs_statfs() local
413 __le32 *uuid = (__le32 *)c->uuid; in ubifs_statfs()
415 free = ubifs_get_free_space(c); in ubifs_statfs()
421 buf->f_blocks = c->block_cnt; in ubifs_statfs()
423 if (free > c->report_rp_size) in ubifs_statfs()
424 buf->f_bavail = (free - c->report_rp_size) >> UBIFS_BLOCK_SHIFT; in ubifs_statfs()
432 ubifs_assert(c, buf->f_bfree <= c->block_cnt); in ubifs_statfs()
438 struct ubifs_info *c = root->d_sb->s_fs_info; in ubifs_show_options() local
440 if (c->mount_opts.unmount_mode == 2) in ubifs_show_options()
442 else if (c->mount_opts.unmount_mode == 1) in ubifs_show_options()
445 if (c->mount_opts.bulk_read == 2) in ubifs_show_options()
447 else if (c->mount_opts.bulk_read == 1) in ubifs_show_options()
450 if (c->mount_opts.chk_data_crc == 2) in ubifs_show_options()
452 else if (c->mount_opts.chk_data_crc == 1) in ubifs_show_options()
455 if (c->mount_opts.override_compr) { in ubifs_show_options()
457 ubifs_compr_name(c, c->mount_opts.compr_type)); in ubifs_show_options()
460 seq_printf(s, ",assert=%s", ubifs_assert_action_name(c)); in ubifs_show_options()
461 seq_printf(s, ",ubi=%d,vol=%d", c->vi.ubi_num, c->vi.vol_id); in ubifs_show_options()
469 struct ubifs_info *c = sb->s_fs_info; in ubifs_sync_fs() local
483 for (i = 0; i < c->jhead_cnt; i++) { in ubifs_sync_fs()
484 err = ubifs_wbuf_sync(&c->jheads[i].wbuf); in ubifs_sync_fs()
496 err = ubifs_run_commit(c); in ubifs_sync_fs()
500 return ubi_sync(c->vi.ubi_num); in ubifs_sync_fs()
505 * @c: UBIFS file-system description object
512 static int init_constants_early(struct ubifs_info *c) in init_constants_early() argument
514 if (c->vi.corrupted) { in init_constants_early()
515 ubifs_warn(c, "UBI volume is corrupted - read-only mode"); in init_constants_early()
516 c->ro_media = 1; in init_constants_early()
519 if (c->di.ro_mode) { in init_constants_early()
520 ubifs_msg(c, "read-only UBI device"); in init_constants_early()
521 c->ro_media = 1; in init_constants_early()
524 if (c->vi.vol_type == UBI_STATIC_VOLUME) { in init_constants_early()
525 ubifs_msg(c, "static UBI volume - read-only mode"); in init_constants_early()
526 c->ro_media = 1; in init_constants_early()
529 c->leb_cnt = c->vi.size; in init_constants_early()
530 c->leb_size = c->vi.usable_leb_size; in init_constants_early()
531 c->leb_start = c->di.leb_start; in init_constants_early()
532 c->half_leb_size = c->leb_size / 2; in init_constants_early()
533 c->min_io_size = c->di.min_io_size; in init_constants_early()
534 c->min_io_shift = fls(c->min_io_size) - 1; in init_constants_early()
535 c->max_write_size = c->di.max_write_size; in init_constants_early()
536 c->max_write_shift = fls(c->max_write_size) - 1; in init_constants_early()
538 if (c->leb_size < UBIFS_MIN_LEB_SZ) { in init_constants_early()
539 ubifs_errc(c, "too small LEBs (%d bytes), min. is %d bytes", in init_constants_early()
540 c->leb_size, UBIFS_MIN_LEB_SZ); in init_constants_early()
544 if (c->leb_cnt < UBIFS_MIN_LEB_CNT) { in init_constants_early()
545 ubifs_errc(c, "too few LEBs (%d), min. is %d", in init_constants_early()
546 c->leb_cnt, UBIFS_MIN_LEB_CNT); in init_constants_early()
550 if (!is_power_of_2(c->min_io_size)) { in init_constants_early()
551 ubifs_errc(c, "bad min. I/O size %d", c->min_io_size); in init_constants_early()
559 if (c->max_write_size < c->min_io_size || in init_constants_early()
560 c->max_write_size % c->min_io_size || in init_constants_early()
561 !is_power_of_2(c->max_write_size)) { in init_constants_early()
562 ubifs_errc(c, "bad write buffer size %d for %d min. I/O unit", in init_constants_early()
563 c->max_write_size, c->min_io_size); in init_constants_early()
569 * io.c simpler, assume minimum I/O unit size to be 8 bytes if it is in init_constants_early()
572 if (c->min_io_size < 8) { in init_constants_early()
573 c->min_io_size = 8; in init_constants_early()
574 c->min_io_shift = 3; in init_constants_early()
575 if (c->max_write_size < c->min_io_size) { in init_constants_early()
576 c->max_write_size = c->min_io_size; in init_constants_early()
577 c->max_write_shift = c->min_io_shift; in init_constants_early()
581 c->ref_node_alsz = ALIGN(UBIFS_REF_NODE_SZ, c->min_io_size); in init_constants_early()
582 c->mst_node_alsz = ALIGN(UBIFS_MST_NODE_SZ, c->min_io_size); in init_constants_early()
588 c->ranges[UBIFS_PAD_NODE].len = UBIFS_PAD_NODE_SZ; in init_constants_early()
589 c->ranges[UBIFS_SB_NODE].len = UBIFS_SB_NODE_SZ; in init_constants_early()
590 c->ranges[UBIFS_MST_NODE].len = UBIFS_MST_NODE_SZ; in init_constants_early()
591 c->ranges[UBIFS_REF_NODE].len = UBIFS_REF_NODE_SZ; in init_constants_early()
592 c->ranges[UBIFS_TRUN_NODE].len = UBIFS_TRUN_NODE_SZ; in init_constants_early()
593 c->ranges[UBIFS_CS_NODE].len = UBIFS_CS_NODE_SZ; in init_constants_early()
594 c->ranges[UBIFS_AUTH_NODE].min_len = UBIFS_AUTH_NODE_SZ; in init_constants_early()
595 c->ranges[UBIFS_AUTH_NODE].max_len = UBIFS_AUTH_NODE_SZ + in init_constants_early()
597 c->ranges[UBIFS_SIG_NODE].min_len = UBIFS_SIG_NODE_SZ; in init_constants_early()
598 c->ranges[UBIFS_SIG_NODE].max_len = c->leb_size - UBIFS_SB_NODE_SZ; in init_constants_early()
600 c->ranges[UBIFS_INO_NODE].min_len = UBIFS_INO_NODE_SZ; in init_constants_early()
601 c->ranges[UBIFS_INO_NODE].max_len = UBIFS_MAX_INO_NODE_SZ; in init_constants_early()
602 c->ranges[UBIFS_ORPH_NODE].min_len = in init_constants_early()
604 c->ranges[UBIFS_ORPH_NODE].max_len = c->leb_size; in init_constants_early()
605 c->ranges[UBIFS_DENT_NODE].min_len = UBIFS_DENT_NODE_SZ; in init_constants_early()
606 c->ranges[UBIFS_DENT_NODE].max_len = UBIFS_MAX_DENT_NODE_SZ; in init_constants_early()
607 c->ranges[UBIFS_XENT_NODE].min_len = UBIFS_XENT_NODE_SZ; in init_constants_early()
608 c->ranges[UBIFS_XENT_NODE].max_len = UBIFS_MAX_XENT_NODE_SZ; in init_constants_early()
609 c->ranges[UBIFS_DATA_NODE].min_len = UBIFS_DATA_NODE_SZ; in init_constants_early()
610 c->ranges[UBIFS_DATA_NODE].max_len = UBIFS_MAX_DATA_NODE_SZ; in init_constants_early()
615 c->ranges[UBIFS_IDX_NODE].min_len = UBIFS_IDX_NODE_SZ + UBIFS_BRANCH_SZ; in init_constants_early()
620 c->ranges[UBIFS_IDX_NODE].max_len = INT_MAX; in init_constants_early()
623 * Initialize dead and dark LEB space watermarks. See gc.c for comments in init_constants_early()
626 c->dead_wm = ALIGN(MIN_WRITE_SZ, c->min_io_size); in init_constants_early()
627 c->dark_wm = ALIGN(UBIFS_MAX_NODE_SZ, c->min_io_size); in init_constants_early()
634 c->leb_overhead = c->leb_size % UBIFS_MAX_DATA_NODE_SZ; in init_constants_early()
637 c->max_bu_buf_len = UBIFS_MAX_BULK_READ * UBIFS_MAX_DATA_NODE_SZ; in init_constants_early()
638 if (c->max_bu_buf_len > c->leb_size) in init_constants_early()
639 c->max_bu_buf_len = c->leb_size; in init_constants_early()
642 c->min_log_bytes = c->leb_size; in init_constants_early()
649 * @c: UBIFS file-system description object
662 static int bud_wbuf_callback(struct ubifs_info *c, int lnum, int free, int pad) in bud_wbuf_callback() argument
664 return ubifs_update_one_lp(c, lnum, free, pad, 0, 0); in bud_wbuf_callback()
669 * @c: UBIFS file-system description object
676 static int init_constants_sb(struct ubifs_info *c) in init_constants_sb() argument
681 c->main_bytes = (long long)c->main_lebs * c->leb_size; in init_constants_sb()
682 c->max_znode_sz = sizeof(struct ubifs_znode) + in init_constants_sb()
683 c->fanout * sizeof(struct ubifs_zbranch); in init_constants_sb()
685 tmp = ubifs_idx_node_sz(c, 1); in init_constants_sb()
686 c->ranges[UBIFS_IDX_NODE].min_len = tmp; in init_constants_sb()
687 c->min_idx_node_sz = ALIGN(tmp, 8); in init_constants_sb()
689 tmp = ubifs_idx_node_sz(c, c->fanout); in init_constants_sb()
690 c->ranges[UBIFS_IDX_NODE].max_len = tmp; in init_constants_sb()
691 c->max_idx_node_sz = ALIGN(tmp, 8); in init_constants_sb()
694 tmp = UBIFS_CS_NODE_SZ + UBIFS_REF_NODE_SZ * c->jhead_cnt; in init_constants_sb()
695 tmp = ALIGN(tmp, c->min_io_size); in init_constants_sb()
696 if (tmp > c->leb_size) { in init_constants_sb()
697 ubifs_err(c, "too small LEB size %d, at least %d needed", in init_constants_sb()
698 c->leb_size, tmp); in init_constants_sb()
706 tmp64 = c->max_bud_bytes + c->leb_size - 1; in init_constants_sb()
707 c->max_bud_cnt = div_u64(tmp64, c->leb_size); in init_constants_sb()
708 tmp = (c->ref_node_alsz * c->max_bud_cnt + c->leb_size - 1); in init_constants_sb()
709 tmp /= c->leb_size; in init_constants_sb()
711 if (c->log_lebs < tmp) { in init_constants_sb()
712 ubifs_err(c, "too small log %d LEBs, required min. %d LEBs", in init_constants_sb()
713 c->log_lebs, tmp); in init_constants_sb()
722 * it is not included into 'c->bi.inode_budget'. in init_constants_sb()
724 c->bi.page_budget = UBIFS_MAX_DATA_NODE_SZ * UBIFS_BLOCKS_PER_PAGE; in init_constants_sb()
725 c->bi.inode_budget = UBIFS_INO_NODE_SZ; in init_constants_sb()
726 c->bi.dent_budget = UBIFS_MAX_DENT_NODE_SZ; in init_constants_sb()
730 * 'c->max_bud_bytes', UBIFS just blocks all writers and starts commit. in init_constants_sb()
735 c->bg_bud_bytes = (c->max_bud_bytes * 13) >> 4; in init_constants_sb()
743 tmp64 = (long long)(c->jhead_cnt + 1) * c->leb_size + 1; in init_constants_sb()
744 if (c->bg_bud_bytes < tmp64) in init_constants_sb()
745 c->bg_bud_bytes = tmp64; in init_constants_sb()
746 if (c->max_bud_bytes < tmp64 + c->leb_size) in init_constants_sb()
747 c->max_bud_bytes = tmp64 + c->leb_size; in init_constants_sb()
749 err = ubifs_calc_lpt_geom(c); in init_constants_sb()
754 c->idx_leb_size = c->leb_size - c->max_idx_node_sz; in init_constants_sb()
760 * @c: UBIFS file-system description object
766 static void init_constants_master(struct ubifs_info *c) in init_constants_master() argument
770 c->bi.min_idx_lebs = ubifs_calc_min_idx_lebs(c); in init_constants_master()
771 c->report_rp_size = ubifs_reported_space(c, c->rp_size); in init_constants_master()
782 tmp64 = c->main_lebs - 1 - 1 - MIN_INDEX_LEBS - c->jhead_cnt + 1; in init_constants_master()
783 tmp64 *= (long long)c->leb_size - c->leb_overhead; in init_constants_master()
784 tmp64 = ubifs_reported_space(c, tmp64); in init_constants_master()
785 c->block_cnt = tmp64 >> UBIFS_BLOCK_SHIFT; in init_constants_master()
790 * @c: UBIFS file-system description object
799 static int take_gc_lnum(struct ubifs_info *c) in take_gc_lnum() argument
803 if (c->gc_lnum == -1) { in take_gc_lnum()
804 ubifs_err(c, "no LEB for GC"); in take_gc_lnum()
809 err = ubifs_change_one_lp(c, c->gc_lnum, c->leb_size, 0, in take_gc_lnum()
816 * @c: UBIFS file-system description object
821 static int alloc_wbufs(struct ubifs_info *c) in alloc_wbufs() argument
825 c->jheads = kcalloc(c->jhead_cnt, sizeof(struct ubifs_jhead), in alloc_wbufs()
827 if (!c->jheads) in alloc_wbufs()
831 for (i = 0; i < c->jhead_cnt; i++) { in alloc_wbufs()
832 INIT_LIST_HEAD(&c->jheads[i].buds_list); in alloc_wbufs()
833 err = ubifs_wbuf_init(c, &c->jheads[i].wbuf); in alloc_wbufs()
837 c->jheads[i].wbuf.sync_callback = &bud_wbuf_callback; in alloc_wbufs()
838 c->jheads[i].wbuf.jhead = i; in alloc_wbufs()
839 c->jheads[i].grouped = 1; in alloc_wbufs()
840 c->jheads[i].log_hash = ubifs_hash_get_desc(c); in alloc_wbufs()
841 if (IS_ERR(c->jheads[i].log_hash)) in alloc_wbufs()
849 c->jheads[GCHD].wbuf.no_timer = 1; in alloc_wbufs()
850 c->jheads[GCHD].grouped = 0; in alloc_wbufs()
856 kfree(c->jheads[i].log_hash); in alloc_wbufs()
863 * @c: UBIFS file-system description object
865 static void free_wbufs(struct ubifs_info *c) in free_wbufs() argument
869 if (c->jheads) { in free_wbufs()
870 for (i = 0; i < c->jhead_cnt; i++) { in free_wbufs()
871 kfree(c->jheads[i].wbuf.buf); in free_wbufs()
872 kfree(c->jheads[i].wbuf.inodes); in free_wbufs()
873 kfree(c->jheads[i].log_hash); in free_wbufs()
875 kfree(c->jheads); in free_wbufs()
876 c->jheads = NULL; in free_wbufs()
882 * @c: UBIFS file-system description object
884 static void free_orphans(struct ubifs_info *c) in free_orphans() argument
888 while (c->orph_dnext) { in free_orphans()
889 orph = c->orph_dnext; in free_orphans()
890 c->orph_dnext = orph->dnext; in free_orphans()
895 while (!list_empty(&c->orph_list)) { in free_orphans()
896 orph = list_entry(c->orph_list.next, struct ubifs_orphan, list); in free_orphans()
899 ubifs_err(c, "orphan list not empty at unmount"); in free_orphans()
902 vfree(c->orph_buf); in free_orphans()
903 c->orph_buf = NULL; in free_orphans()
908 * @c: UBIFS file-system description object
910 static void free_buds(struct ubifs_info *c) in free_buds() argument
914 rbtree_postorder_for_each_entry_safe(bud, n, &c->buds, rb) in free_buds()
920 * @c: UBIFS file-system description object
923 * mapped or not. The result of checking is stored in the @c->empty variable.
927 static int check_volume_empty(struct ubifs_info *c) in check_volume_empty() argument
931 c->empty = 1; in check_volume_empty()
932 for (lnum = 0; lnum < c->leb_cnt; lnum++) { in check_volume_empty()
933 err = ubifs_is_mapped(c, lnum); in check_volume_empty()
937 c->empty = 0; in check_volume_empty()
1017 * @c: UBIFS file-system description object
1024 static int ubifs_parse_options(struct ubifs_info *c, char *options, in ubifs_parse_options() argument
1047 c->mount_opts.unmount_mode = 2; in ubifs_parse_options()
1050 c->mount_opts.unmount_mode = 1; in ubifs_parse_options()
1053 c->mount_opts.bulk_read = 2; in ubifs_parse_options()
1054 c->bulk_read = 1; in ubifs_parse_options()
1057 c->mount_opts.bulk_read = 1; in ubifs_parse_options()
1058 c->bulk_read = 0; in ubifs_parse_options()
1061 c->mount_opts.chk_data_crc = 2; in ubifs_parse_options()
1062 c->no_chk_data_crc = 0; in ubifs_parse_options()
1065 c->mount_opts.chk_data_crc = 1; in ubifs_parse_options()
1066 c->no_chk_data_crc = 1; in ubifs_parse_options()
1075 c->mount_opts.compr_type = UBIFS_COMPR_NONE; in ubifs_parse_options()
1077 c->mount_opts.compr_type = UBIFS_COMPR_LZO; in ubifs_parse_options()
1079 c->mount_opts.compr_type = UBIFS_COMPR_ZLIB; in ubifs_parse_options()
1081 c->mount_opts.compr_type = UBIFS_COMPR_ZSTD; in ubifs_parse_options()
1083 ubifs_err(c, "unknown compressor \"%s\"", name); //FIXME: is c ready? in ubifs_parse_options()
1088 c->mount_opts.override_compr = 1; in ubifs_parse_options()
1089 c->default_compr = c->mount_opts.compr_type; in ubifs_parse_options()
1099 c->assert_action = ASSACT_REPORT; in ubifs_parse_options()
1101 c->assert_action = ASSACT_RO; in ubifs_parse_options()
1103 c->assert_action = ASSACT_PANIC; in ubifs_parse_options()
1105 ubifs_err(c, "unknown assert action \"%s\"", act); in ubifs_parse_options()
1114 c->auth_key_name = kstrdup(args[0].from, in ubifs_parse_options()
1116 if (!c->auth_key_name) in ubifs_parse_options()
1122 c->auth_hash_name = kstrdup(args[0].from, in ubifs_parse_options()
1124 if (!c->auth_hash_name) in ubifs_parse_options()
1133 struct super_block *sb = c->vfs_sb; in ubifs_parse_options()
1137 ubifs_err(c, "unrecognized mount option \"%s\" or missing value", in ubifs_parse_options()
1152 * @c: UBIFS file-system description object
1154 static void ubifs_release_options(struct ubifs_info *c) in ubifs_release_options() argument
1156 kfree(c->auth_key_name); in ubifs_release_options()
1157 c->auth_key_name = NULL; in ubifs_release_options()
1158 kfree(c->auth_hash_name); in ubifs_release_options()
1159 c->auth_hash_name = NULL; in ubifs_release_options()
1164 * @c: UBIFS file-system description object
1169 static void destroy_journal(struct ubifs_info *c) in destroy_journal() argument
1171 while (!list_empty(&c->unclean_leb_list)) { in destroy_journal()
1174 ucleb = list_entry(c->unclean_leb_list.next, in destroy_journal()
1179 while (!list_empty(&c->old_buds)) { in destroy_journal()
1182 bud = list_entry(c->old_buds.next, struct ubifs_bud, list); in destroy_journal()
1186 ubifs_destroy_idx_gc(c); in destroy_journal()
1187 ubifs_destroy_size_tree(c); in destroy_journal()
1188 ubifs_tnc_close(c); in destroy_journal()
1189 free_buds(c); in destroy_journal()
1194 * @c: UBIFS file-system description object
1196 static void bu_init(struct ubifs_info *c) in bu_init() argument
1198 ubifs_assert(c, c->bulk_read == 1); in bu_init()
1200 if (c->bu.buf) in bu_init()
1204 c->bu.buf = kmalloc(c->max_bu_buf_len, GFP_KERNEL | __GFP_NOWARN); in bu_init()
1205 if (!c->bu.buf) { in bu_init()
1206 if (c->max_bu_buf_len > UBIFS_KMALLOC_OK) { in bu_init()
1207 c->max_bu_buf_len = UBIFS_KMALLOC_OK; in bu_init()
1212 ubifs_warn(c, "cannot allocate %d bytes of memory for bulk-read, disabling it", in bu_init()
1213 c->max_bu_buf_len); in bu_init()
1214 c->mount_opts.bulk_read = 1; in bu_init()
1215 c->bulk_read = 0; in bu_init()
1222 * @c: UBIFS file-system description object
1227 static int check_free_space(struct ubifs_info *c) in check_free_space() argument
1229 ubifs_assert(c, c->dark_wm > 0); in check_free_space()
1230 if (c->lst.total_free + c->lst.total_dirty < c->dark_wm) { in check_free_space()
1231 ubifs_err(c, "insufficient free space to mount in R/W mode"); in check_free_space()
1232 ubifs_dump_budg(c, &c->bi); in check_free_space()
1233 ubifs_dump_lprops(c); in check_free_space()
1241 * @c: UBIFS file-system description object
1246 static int mount_ubifs(struct ubifs_info *c) in mount_ubifs() argument
1252 c->ro_mount = !!sb_rdonly(c->vfs_sb); in mount_ubifs()
1254 c->probing = !!(c->vfs_sb->s_flags & SB_SILENT); in mount_ubifs()
1256 err = init_constants_early(c); in mount_ubifs()
1260 err = ubifs_debugging_init(c); in mount_ubifs()
1264 err = check_volume_empty(c); in mount_ubifs()
1268 if (c->empty && (c->ro_mount || c->ro_media)) { in mount_ubifs()
1273 ubifs_err(c, "can't format empty UBI volume: read-only %s", in mount_ubifs()
1274 c->ro_media ? "UBI volume" : "mount"); in mount_ubifs()
1279 if (c->ro_media && !c->ro_mount) { in mount_ubifs()
1280 ubifs_err(c, "cannot mount read-write - read-only media"); in mount_ubifs()
1291 c->bottom_up_buf = kmalloc_array(BOTTOM_UP_HEIGHT, sizeof(int), in mount_ubifs()
1293 if (!c->bottom_up_buf) in mount_ubifs()
1296 c->sbuf = vmalloc(c->leb_size); in mount_ubifs()
1297 if (!c->sbuf) in mount_ubifs()
1300 if (!c->ro_mount) { in mount_ubifs()
1301 c->ileb_buf = vmalloc(c->leb_size); in mount_ubifs()
1302 if (!c->ileb_buf) in mount_ubifs()
1306 if (c->bulk_read == 1) in mount_ubifs()
1307 bu_init(c); in mount_ubifs()
1309 if (!c->ro_mount) { in mount_ubifs()
1310 c->write_reserve_buf = kmalloc(COMPRESSED_DATA_NODE_BUF_SZ + \ in mount_ubifs()
1313 if (!c->write_reserve_buf) in mount_ubifs()
1317 c->mounting = 1; in mount_ubifs()
1319 if (c->auth_key_name) { in mount_ubifs()
1321 err = ubifs_init_authentication(c); in mount_ubifs()
1325 ubifs_err(c, "auth_key_name, but UBIFS is built without" in mount_ubifs()
1332 err = ubifs_read_superblock(c); in mount_ubifs()
1336 c->probing = 0; in mount_ubifs()
1342 if (!ubifs_compr_present(c, c->default_compr)) { in mount_ubifs()
1343 ubifs_err(c, "'compressor \"%s\" is not compiled in", in mount_ubifs()
1344 ubifs_compr_name(c, c->default_compr)); in mount_ubifs()
1349 err = init_constants_sb(c); in mount_ubifs()
1353 sz = ALIGN(c->max_idx_node_sz, c->min_io_size) * 2; in mount_ubifs()
1354 c->cbuf = kmalloc(sz, GFP_NOFS); in mount_ubifs()
1355 if (!c->cbuf) { in mount_ubifs()
1360 err = alloc_wbufs(c); in mount_ubifs()
1364 sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num, c->vi.vol_id); in mount_ubifs()
1365 if (!c->ro_mount) { in mount_ubifs()
1367 c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name); in mount_ubifs()
1368 if (IS_ERR(c->bgt)) { in mount_ubifs()
1369 err = PTR_ERR(c->bgt); in mount_ubifs()
1370 c->bgt = NULL; in mount_ubifs()
1371 ubifs_err(c, "cannot spawn \"%s\", error %d", in mount_ubifs()
1372 c->bgt_name, err); in mount_ubifs()
1375 wake_up_process(c->bgt); in mount_ubifs()
1378 err = ubifs_read_master(c); in mount_ubifs()
1382 init_constants_master(c); in mount_ubifs()
1384 if ((c->mst_node->flags & cpu_to_le32(UBIFS_MST_DIRTY)) != 0) { in mount_ubifs()
1385 ubifs_msg(c, "recovery needed"); in mount_ubifs()
1386 c->need_recovery = 1; in mount_ubifs()
1389 if (c->need_recovery && !c->ro_mount) { in mount_ubifs()
1390 err = ubifs_recover_inl_heads(c, c->sbuf); in mount_ubifs()
1395 err = ubifs_lpt_init(c, 1, !c->ro_mount); in mount_ubifs()
1399 if (!c->ro_mount && c->space_fixup) { in mount_ubifs()
1400 err = ubifs_fixup_free_space(c); in mount_ubifs()
1405 if (!c->ro_mount && !c->need_recovery) { in mount_ubifs()
1410 c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY); in mount_ubifs()
1411 err = ubifs_write_master(c); in mount_ubifs()
1422 if (ubifs_authenticated(c) && ubifs_hmac_zero(c, c->sup_node->hmac)) { in mount_ubifs()
1423 err = ubifs_hmac_wkm(c, c->sup_node->hmac_wkm); in mount_ubifs()
1426 c->superblock_need_write = 1; in mount_ubifs()
1429 if (!c->ro_mount && c->superblock_need_write) { in mount_ubifs()
1430 err = ubifs_write_sb_node(c, c->sup_node); in mount_ubifs()
1433 c->superblock_need_write = 0; in mount_ubifs()
1436 err = dbg_check_idx_size(c, c->bi.old_idx_sz); in mount_ubifs()
1440 err = ubifs_replay_journal(c); in mount_ubifs()
1445 c->bi.min_idx_lebs = ubifs_calc_min_idx_lebs(c); in mount_ubifs()
1447 err = ubifs_mount_orphans(c, c->need_recovery, c->ro_mount); in mount_ubifs()
1451 if (!c->ro_mount) { in mount_ubifs()
1454 err = check_free_space(c); in mount_ubifs()
1459 lnum = c->lhead_lnum + 1; in mount_ubifs()
1460 if (lnum >= UBIFS_LOG_LNUM + c->log_lebs) in mount_ubifs()
1462 if (lnum == c->ltail_lnum) { in mount_ubifs()
1463 err = ubifs_consolidate_log(c); in mount_ubifs()
1468 if (c->need_recovery) { in mount_ubifs()
1469 if (!ubifs_authenticated(c)) { in mount_ubifs()
1470 err = ubifs_recover_size(c, true); in mount_ubifs()
1475 err = ubifs_rcvry_gc_commit(c); in mount_ubifs()
1479 if (ubifs_authenticated(c)) { in mount_ubifs()
1480 err = ubifs_recover_size(c, false); in mount_ubifs()
1485 err = take_gc_lnum(c); in mount_ubifs()
1493 err = ubifs_leb_unmap(c, c->gc_lnum); in mount_ubifs()
1498 err = dbg_check_lprops(c); in mount_ubifs()
1501 } else if (c->need_recovery) { in mount_ubifs()
1502 err = ubifs_recover_size(c, false); in mount_ubifs()
1512 err = take_gc_lnum(c); in mount_ubifs()
1518 list_add_tail(&c->infos_list, &ubifs_infos); in mount_ubifs()
1521 if (c->need_recovery) { in mount_ubifs()
1522 if (c->ro_mount) in mount_ubifs()
1523 ubifs_msg(c, "recovery deferred"); in mount_ubifs()
1525 c->need_recovery = 0; in mount_ubifs()
1526 ubifs_msg(c, "recovery completed"); in mount_ubifs()
1532 ubifs_assert(c, c->lst.taken_empty_lebs > 0); in mount_ubifs()
1535 ubifs_assert(c, c->lst.taken_empty_lebs > 0); in mount_ubifs()
1537 err = dbg_check_filesystem(c); in mount_ubifs()
1541 dbg_debugfs_init_fs(c); in mount_ubifs()
1543 c->mounting = 0; in mount_ubifs()
1545 ubifs_msg(c, "UBIFS: mounted UBI device %d, volume %d, name \"%s\"%s", in mount_ubifs()
1546 c->vi.ubi_num, c->vi.vol_id, c->vi.name, in mount_ubifs()
1547 c->ro_mount ? ", R/O mode" : ""); in mount_ubifs()
1548 x = (long long)c->main_lebs * c->leb_size; in mount_ubifs()
1549 y = (long long)c->log_lebs * c->leb_size + c->max_bud_bytes; in mount_ubifs()
1550 ubifs_msg(c, "LEB size: %d bytes (%d KiB), min./max. I/O unit sizes: %d bytes/%d bytes", in mount_ubifs()
1551 c->leb_size, c->leb_size >> 10, c->min_io_size, in mount_ubifs()
1552 c->max_write_size); in mount_ubifs()
1553 …ubifs_msg(c, "FS size: %lld bytes (%lld MiB, %d LEBs), journal size %lld bytes (%lld MiB, %d LEBs)… in mount_ubifs()
1554 x, x >> 20, c->main_lebs, in mount_ubifs()
1555 y, y >> 20, c->log_lebs + c->max_bud_cnt); in mount_ubifs()
1556 ubifs_msg(c, "reserved for root: %llu bytes (%llu KiB)", in mount_ubifs()
1557 c->report_rp_size, c->report_rp_size >> 10); in mount_ubifs()
1558 ubifs_msg(c, "media format: w%d/r%d (latest is w%d/r%d), UUID %pUB%s", in mount_ubifs()
1559 c->fmt_version, c->ro_compat_version, in mount_ubifs()
1560 UBIFS_FORMAT_VERSION, UBIFS_RO_COMPAT_VERSION, c->uuid, in mount_ubifs()
1561 c->big_lpt ? ", big LPT model" : ", small LPT model"); in mount_ubifs()
1563 dbg_gen("default compressor: %s", ubifs_compr_name(c, c->default_compr)); in mount_ubifs()
1565 c->jhead_cnt - NONDATA_JHEADS_CNT); in mount_ubifs()
1567 c->log_lebs, UBIFS_LOG_LNUM, c->log_last); in mount_ubifs()
1569 c->lpt_lebs, c->lpt_first, c->lpt_last); in mount_ubifs()
1571 c->orph_lebs, c->orph_first, c->orph_last); in mount_ubifs()
1573 c->main_lebs, c->main_first, c->leb_cnt - 1); in mount_ubifs()
1574 dbg_gen("index LEBs: %d", c->lst.idx_lebs); in mount_ubifs()
1576 c->bi.old_idx_sz, c->bi.old_idx_sz >> 10, in mount_ubifs()
1577 c->bi.old_idx_sz >> 20); in mount_ubifs()
1578 dbg_gen("key hash type: %d", c->key_hash_type); in mount_ubifs()
1579 dbg_gen("tree fanout: %d", c->fanout); in mount_ubifs()
1580 dbg_gen("reserved GC LEB: %d", c->gc_lnum); in mount_ubifs()
1581 dbg_gen("max. znode size %d", c->max_znode_sz); in mount_ubifs()
1582 dbg_gen("max. index node size %d", c->max_idx_node_sz); in mount_ubifs()
1591 UBIFS_MAX_DENT_NODE_SZ, ubifs_idx_node_sz(c, c->fanout)); in mount_ubifs()
1592 dbg_gen("dead watermark: %d", c->dead_wm); in mount_ubifs()
1593 dbg_gen("dark watermark: %d", c->dark_wm); in mount_ubifs()
1594 dbg_gen("LEB overhead: %d", c->leb_overhead); in mount_ubifs()
1595 x = (long long)c->main_lebs * c->dark_wm; in mount_ubifs()
1599 c->max_bud_bytes, c->max_bud_bytes >> 10, in mount_ubifs()
1600 c->max_bud_bytes >> 20); in mount_ubifs()
1602 c->bg_bud_bytes, c->bg_bud_bytes >> 10, in mount_ubifs()
1603 c->bg_bud_bytes >> 20); in mount_ubifs()
1605 c->bud_bytes, c->bud_bytes >> 10, c->bud_bytes >> 20); in mount_ubifs()
1606 dbg_gen("max. seq. number: %llu", c->max_sqnum); in mount_ubifs()
1607 dbg_gen("commit number: %llu", c->cmt_no); in mount_ubifs()
1608 dbg_gen("max. xattrs per inode: %d", ubifs_xattr_max_cnt(c)); in mount_ubifs()
1609 dbg_gen("max orphans: %d", c->max_orphans); in mount_ubifs()
1615 list_del(&c->infos_list); in mount_ubifs()
1618 free_orphans(c); in mount_ubifs()
1620 destroy_journal(c); in mount_ubifs()
1622 ubifs_lpt_free(c, 0); in mount_ubifs()
1624 kfree(c->mst_node); in mount_ubifs()
1625 kfree(c->rcvrd_mst_node); in mount_ubifs()
1626 if (c->bgt) in mount_ubifs()
1627 kthread_stop(c->bgt); in mount_ubifs()
1629 free_wbufs(c); in mount_ubifs()
1631 kfree(c->cbuf); in mount_ubifs()
1633 ubifs_exit_authentication(c); in mount_ubifs()
1635 kfree(c->write_reserve_buf); in mount_ubifs()
1636 kfree(c->bu.buf); in mount_ubifs()
1637 vfree(c->ileb_buf); in mount_ubifs()
1638 vfree(c->sbuf); in mount_ubifs()
1639 kfree(c->bottom_up_buf); in mount_ubifs()
1640 kfree(c->sup_node); in mount_ubifs()
1641 ubifs_debugging_exit(c); in mount_ubifs()
1647 * @c: UBIFS file-system description object
1654 static void ubifs_umount(struct ubifs_info *c) in ubifs_umount() argument
1656 dbg_gen("un-mounting UBI device %d, volume %d", c->vi.ubi_num, in ubifs_umount()
1657 c->vi.vol_id); in ubifs_umount()
1659 dbg_debugfs_exit_fs(c); in ubifs_umount()
1661 list_del(&c->infos_list); in ubifs_umount()
1664 if (c->bgt) in ubifs_umount()
1665 kthread_stop(c->bgt); in ubifs_umount()
1667 destroy_journal(c); in ubifs_umount()
1668 free_wbufs(c); in ubifs_umount()
1669 free_orphans(c); in ubifs_umount()
1670 ubifs_lpt_free(c, 0); in ubifs_umount()
1671 ubifs_exit_authentication(c); in ubifs_umount()
1673 ubifs_release_options(c); in ubifs_umount()
1674 kfree(c->cbuf); in ubifs_umount()
1675 kfree(c->rcvrd_mst_node); in ubifs_umount()
1676 kfree(c->mst_node); in ubifs_umount()
1677 kfree(c->write_reserve_buf); in ubifs_umount()
1678 kfree(c->bu.buf); in ubifs_umount()
1679 vfree(c->ileb_buf); in ubifs_umount()
1680 vfree(c->sbuf); in ubifs_umount()
1681 kfree(c->bottom_up_buf); in ubifs_umount()
1682 kfree(c->sup_node); in ubifs_umount()
1683 ubifs_debugging_exit(c); in ubifs_umount()
1688 * @c: UBIFS file-system description object
1694 static int ubifs_remount_rw(struct ubifs_info *c) in ubifs_remount_rw() argument
1698 if (c->rw_incompat) { in ubifs_remount_rw()
1699 ubifs_err(c, "the file-system is not R/W-compatible"); in ubifs_remount_rw()
1700 …ubifs_msg(c, "on-flash format version is w%d/r%d, but software only supports up to version w%d/r%d… in ubifs_remount_rw()
1701 c->fmt_version, c->ro_compat_version, in ubifs_remount_rw()
1706 mutex_lock(&c->umount_mutex); in ubifs_remount_rw()
1707 dbg_save_space_info(c); in ubifs_remount_rw()
1708 c->remounting_rw = 1; in ubifs_remount_rw()
1709 c->ro_mount = 0; in ubifs_remount_rw()
1711 if (c->space_fixup) { in ubifs_remount_rw()
1712 err = ubifs_fixup_free_space(c); in ubifs_remount_rw()
1717 err = check_free_space(c); in ubifs_remount_rw()
1721 if (c->need_recovery) { in ubifs_remount_rw()
1722 ubifs_msg(c, "completing deferred recovery"); in ubifs_remount_rw()
1723 err = ubifs_write_rcvrd_mst_node(c); in ubifs_remount_rw()
1726 if (!ubifs_authenticated(c)) { in ubifs_remount_rw()
1727 err = ubifs_recover_size(c, true); in ubifs_remount_rw()
1731 err = ubifs_clean_lebs(c, c->sbuf); in ubifs_remount_rw()
1734 err = ubifs_recover_inl_heads(c, c->sbuf); in ubifs_remount_rw()
1739 ubifs_assert(c, c->tot_orphans == 0); in ubifs_remount_rw()
1740 err = ubifs_clear_orphans(c); in ubifs_remount_rw()
1745 if (!(c->mst_node->flags & cpu_to_le32(UBIFS_MST_DIRTY))) { in ubifs_remount_rw()
1746 c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY); in ubifs_remount_rw()
1747 err = ubifs_write_master(c); in ubifs_remount_rw()
1752 if (c->superblock_need_write) { in ubifs_remount_rw()
1753 struct ubifs_sb_node *sup = c->sup_node; in ubifs_remount_rw()
1755 err = ubifs_write_sb_node(c, sup); in ubifs_remount_rw()
1759 c->superblock_need_write = 0; in ubifs_remount_rw()
1762 c->ileb_buf = vmalloc(c->leb_size); in ubifs_remount_rw()
1763 if (!c->ileb_buf) { in ubifs_remount_rw()
1768 c->write_reserve_buf = kmalloc(COMPRESSED_DATA_NODE_BUF_SZ + \ in ubifs_remount_rw()
1770 if (!c->write_reserve_buf) { in ubifs_remount_rw()
1775 err = ubifs_lpt_init(c, 0, 1); in ubifs_remount_rw()
1780 c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name); in ubifs_remount_rw()
1781 if (IS_ERR(c->bgt)) { in ubifs_remount_rw()
1782 err = PTR_ERR(c->bgt); in ubifs_remount_rw()
1783 c->bgt = NULL; in ubifs_remount_rw()
1784 ubifs_err(c, "cannot spawn \"%s\", error %d", in ubifs_remount_rw()
1785 c->bgt_name, err); in ubifs_remount_rw()
1788 wake_up_process(c->bgt); in ubifs_remount_rw()
1790 c->orph_buf = vmalloc(c->leb_size); in ubifs_remount_rw()
1791 if (!c->orph_buf) { in ubifs_remount_rw()
1797 lnum = c->lhead_lnum + 1; in ubifs_remount_rw()
1798 if (lnum >= UBIFS_LOG_LNUM + c->log_lebs) in ubifs_remount_rw()
1800 if (lnum == c->ltail_lnum) { in ubifs_remount_rw()
1801 err = ubifs_consolidate_log(c); in ubifs_remount_rw()
1806 if (c->need_recovery) { in ubifs_remount_rw()
1807 err = ubifs_rcvry_gc_commit(c); in ubifs_remount_rw()
1811 if (ubifs_authenticated(c)) { in ubifs_remount_rw()
1812 err = ubifs_recover_size(c, false); in ubifs_remount_rw()
1817 err = ubifs_leb_unmap(c, c->gc_lnum); in ubifs_remount_rw()
1823 c->remounting_rw = 0; in ubifs_remount_rw()
1825 if (c->need_recovery) { in ubifs_remount_rw()
1826 c->need_recovery = 0; in ubifs_remount_rw()
1827 ubifs_msg(c, "deferred recovery completed"); in ubifs_remount_rw()
1839 err = dbg_check_space_info(c); in ubifs_remount_rw()
1842 mutex_unlock(&c->umount_mutex); in ubifs_remount_rw()
1846 c->ro_mount = 1; in ubifs_remount_rw()
1847 vfree(c->orph_buf); in ubifs_remount_rw()
1848 c->orph_buf = NULL; in ubifs_remount_rw()
1849 if (c->bgt) { in ubifs_remount_rw()
1850 kthread_stop(c->bgt); in ubifs_remount_rw()
1851 c->bgt = NULL; in ubifs_remount_rw()
1853 free_wbufs(c); in ubifs_remount_rw()
1854 kfree(c->write_reserve_buf); in ubifs_remount_rw()
1855 c->write_reserve_buf = NULL; in ubifs_remount_rw()
1856 vfree(c->ileb_buf); in ubifs_remount_rw()
1857 c->ileb_buf = NULL; in ubifs_remount_rw()
1858 ubifs_lpt_free(c, 1); in ubifs_remount_rw()
1859 c->remounting_rw = 0; in ubifs_remount_rw()
1860 mutex_unlock(&c->umount_mutex); in ubifs_remount_rw()
1866 * @c: UBIFS file-system description object
1871 static void ubifs_remount_ro(struct ubifs_info *c) in ubifs_remount_ro() argument
1875 ubifs_assert(c, !c->need_recovery); in ubifs_remount_ro()
1876 ubifs_assert(c, !c->ro_mount); in ubifs_remount_ro()
1878 mutex_lock(&c->umount_mutex); in ubifs_remount_ro()
1879 if (c->bgt) { in ubifs_remount_ro()
1880 kthread_stop(c->bgt); in ubifs_remount_ro()
1881 c->bgt = NULL; in ubifs_remount_ro()
1884 dbg_save_space_info(c); in ubifs_remount_ro()
1886 for (i = 0; i < c->jhead_cnt; i++) { in ubifs_remount_ro()
1887 err = ubifs_wbuf_sync(&c->jheads[i].wbuf); in ubifs_remount_ro()
1889 ubifs_ro_mode(c, err); in ubifs_remount_ro()
1892 c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY); in ubifs_remount_ro()
1893 c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS); in ubifs_remount_ro()
1894 c->mst_node->gc_lnum = cpu_to_le32(c->gc_lnum); in ubifs_remount_ro()
1895 err = ubifs_write_master(c); in ubifs_remount_ro()
1897 ubifs_ro_mode(c, err); in ubifs_remount_ro()
1899 vfree(c->orph_buf); in ubifs_remount_ro()
1900 c->orph_buf = NULL; in ubifs_remount_ro()
1901 kfree(c->write_reserve_buf); in ubifs_remount_ro()
1902 c->write_reserve_buf = NULL; in ubifs_remount_ro()
1903 vfree(c->ileb_buf); in ubifs_remount_ro()
1904 c->ileb_buf = NULL; in ubifs_remount_ro()
1905 ubifs_lpt_free(c, 1); in ubifs_remount_ro()
1906 c->ro_mount = 1; in ubifs_remount_ro()
1907 err = dbg_check_space_info(c); in ubifs_remount_ro()
1909 ubifs_ro_mode(c, err); in ubifs_remount_ro()
1910 mutex_unlock(&c->umount_mutex); in ubifs_remount_ro()
1916 struct ubifs_info *c = sb->s_fs_info; in ubifs_put_super() local
1918 ubifs_msg(c, "un-mount UBI device %d", c->vi.ubi_num); in ubifs_put_super()
1925 if (!c->ro_error) { in ubifs_put_super()
1926 ubifs_assert(c, c->bi.idx_growth == 0); in ubifs_put_super()
1927 ubifs_assert(c, c->bi.dd_growth == 0); in ubifs_put_super()
1928 ubifs_assert(c, c->bi.data_growth == 0); in ubifs_put_super()
1932 * The 'c->umount_lock' prevents races between UBIFS memory shrinker in ubifs_put_super()
1937 mutex_lock(&c->umount_mutex); in ubifs_put_super()
1938 if (!c->ro_mount) { in ubifs_put_super()
1943 if (c->bgt) { in ubifs_put_super()
1944 kthread_stop(c->bgt); in ubifs_put_super()
1945 c->bgt = NULL; in ubifs_put_super()
1949 * On fatal errors c->ro_error is set to 1, in which case we do in ubifs_put_super()
1952 if (!c->ro_error) { in ubifs_put_super()
1956 for (i = 0; i < c->jhead_cnt; i++) { in ubifs_put_super()
1957 err = ubifs_wbuf_sync(&c->jheads[i].wbuf); in ubifs_put_super()
1959 ubifs_ro_mode(c, err); in ubifs_put_super()
1967 c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY); in ubifs_put_super()
1968 c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS); in ubifs_put_super()
1969 c->mst_node->gc_lnum = cpu_to_le32(c->gc_lnum); in ubifs_put_super()
1970 err = ubifs_write_master(c); in ubifs_put_super()
1977 ubifs_err(c, "failed to write master node, error %d", in ubifs_put_super()
1980 for (i = 0; i < c->jhead_cnt; i++) in ubifs_put_super()
1982 hrtimer_cancel(&c->jheads[i].wbuf.timer); in ubifs_put_super()
1986 ubifs_umount(c); in ubifs_put_super()
1987 ubi_close_volume(c->ubi); in ubifs_put_super()
1988 mutex_unlock(&c->umount_mutex); in ubifs_put_super()
1994 struct ubifs_info *c = sb->s_fs_info; in ubifs_remount_fs() local
1999 err = ubifs_parse_options(c, data, 1); in ubifs_remount_fs()
2001 ubifs_err(c, "invalid or unknown remount parameter"); in ubifs_remount_fs()
2005 if (c->ro_mount && !(*flags & SB_RDONLY)) { in ubifs_remount_fs()
2006 if (c->ro_error) { in ubifs_remount_fs()
2007 ubifs_msg(c, "cannot re-mount R/W due to prior errors"); in ubifs_remount_fs()
2010 if (c->ro_media) { in ubifs_remount_fs()
2011 ubifs_msg(c, "cannot re-mount R/W - UBI volume is R/O"); in ubifs_remount_fs()
2014 err = ubifs_remount_rw(c); in ubifs_remount_fs()
2017 } else if (!c->ro_mount && (*flags & SB_RDONLY)) { in ubifs_remount_fs()
2018 if (c->ro_error) { in ubifs_remount_fs()
2019 ubifs_msg(c, "cannot re-mount R/O due to prior errors"); in ubifs_remount_fs()
2022 ubifs_remount_ro(c); in ubifs_remount_fs()
2025 if (c->bulk_read == 1) in ubifs_remount_fs()
2026 bu_init(c); in ubifs_remount_fs()
2029 mutex_lock(&c->bu_mutex); in ubifs_remount_fs()
2030 kfree(c->bu.buf); in ubifs_remount_fs()
2031 c->bu.buf = NULL; in ubifs_remount_fs()
2032 mutex_unlock(&c->bu_mutex); in ubifs_remount_fs()
2035 if (!c->need_recovery) in ubifs_remount_fs()
2036 ubifs_assert(c, c->lst.taken_empty_lebs > 0); in ubifs_remount_fs()
2122 struct ubifs_info *c; in alloc_ubifs_info() local
2124 c = kzalloc(sizeof(struct ubifs_info), GFP_KERNEL); in alloc_ubifs_info()
2125 if (c) { in alloc_ubifs_info()
2126 spin_lock_init(&c->cnt_lock); in alloc_ubifs_info()
2127 spin_lock_init(&c->cs_lock); in alloc_ubifs_info()
2128 spin_lock_init(&c->buds_lock); in alloc_ubifs_info()
2129 spin_lock_init(&c->space_lock); in alloc_ubifs_info()
2130 spin_lock_init(&c->orphan_lock); in alloc_ubifs_info()
2131 init_rwsem(&c->commit_sem); in alloc_ubifs_info()
2132 mutex_init(&c->lp_mutex); in alloc_ubifs_info()
2133 mutex_init(&c->tnc_mutex); in alloc_ubifs_info()
2134 mutex_init(&c->log_mutex); in alloc_ubifs_info()
2135 mutex_init(&c->umount_mutex); in alloc_ubifs_info()
2136 mutex_init(&c->bu_mutex); in alloc_ubifs_info()
2137 mutex_init(&c->write_reserve_mutex); in alloc_ubifs_info()
2138 init_waitqueue_head(&c->cmt_wq); in alloc_ubifs_info()
2139 c->buds = RB_ROOT; in alloc_ubifs_info()
2140 c->old_idx = RB_ROOT; in alloc_ubifs_info()
2141 c->size_tree = RB_ROOT; in alloc_ubifs_info()
2142 c->orph_tree = RB_ROOT; in alloc_ubifs_info()
2143 INIT_LIST_HEAD(&c->infos_list); in alloc_ubifs_info()
2144 INIT_LIST_HEAD(&c->idx_gc); in alloc_ubifs_info()
2145 INIT_LIST_HEAD(&c->replay_list); in alloc_ubifs_info()
2146 INIT_LIST_HEAD(&c->replay_buds); in alloc_ubifs_info()
2147 INIT_LIST_HEAD(&c->uncat_list); in alloc_ubifs_info()
2148 INIT_LIST_HEAD(&c->empty_list); in alloc_ubifs_info()
2149 INIT_LIST_HEAD(&c->freeable_list); in alloc_ubifs_info()
2150 INIT_LIST_HEAD(&c->frdi_idx_list); in alloc_ubifs_info()
2151 INIT_LIST_HEAD(&c->unclean_leb_list); in alloc_ubifs_info()
2152 INIT_LIST_HEAD(&c->old_buds); in alloc_ubifs_info()
2153 INIT_LIST_HEAD(&c->orph_list); in alloc_ubifs_info()
2154 INIT_LIST_HEAD(&c->orph_new); in alloc_ubifs_info()
2155 c->no_chk_data_crc = 1; in alloc_ubifs_info()
2156 c->assert_action = ASSACT_RO; in alloc_ubifs_info()
2158 c->highest_inum = UBIFS_FIRST_INO; in alloc_ubifs_info()
2159 c->lhead_lnum = c->ltail_lnum = UBIFS_LOG_LNUM; in alloc_ubifs_info()
2161 ubi_get_volume_info(ubi, &c->vi); in alloc_ubifs_info()
2162 ubi_get_device_info(c->vi.ubi_num, &c->di); in alloc_ubifs_info()
2164 return c; in alloc_ubifs_info()
2169 struct ubifs_info *c = sb->s_fs_info; in ubifs_fill_super() local
2173 c->vfs_sb = sb; in ubifs_fill_super()
2175 c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READWRITE); in ubifs_fill_super()
2176 if (IS_ERR(c->ubi)) { in ubifs_fill_super()
2177 err = PTR_ERR(c->ubi); in ubifs_fill_super()
2181 err = ubifs_parse_options(c, data, 0); in ubifs_fill_super()
2195 err = super_setup_bdi_name(sb, "ubifs_%d_%d", c->vi.ubi_num, in ubifs_fill_super()
2196 c->vi.vol_id); in ubifs_fill_super()
2202 sb->s_fs_info = c; in ubifs_fill_super()
2206 sb->s_maxbytes = c->max_inode_sz = key_max_inode_size(c); in ubifs_fill_super()
2207 if (c->max_inode_sz > MAX_LFS_FILESIZE) in ubifs_fill_super()
2208 sb->s_maxbytes = c->max_inode_sz = MAX_LFS_FILESIZE; in ubifs_fill_super()
2215 mutex_lock(&c->umount_mutex); in ubifs_fill_super()
2216 err = mount_ubifs(c); in ubifs_fill_super()
2218 ubifs_assert(c, err < 0); in ubifs_fill_super()
2235 mutex_unlock(&c->umount_mutex); in ubifs_fill_super()
2239 ubifs_umount(c); in ubifs_fill_super()
2241 mutex_unlock(&c->umount_mutex); in ubifs_fill_super()
2243 ubifs_release_options(c); in ubifs_fill_super()
2244 ubi_close_volume(c->ubi); in ubifs_fill_super()
2252 struct ubifs_info *c = sb->s_fs_info; in sb_test() local
2254 return c->vi.cdev == c1->vi.cdev; in sb_test()
2267 struct ubifs_info *c; in ubifs_mount() local
2286 c = alloc_ubifs_info(ubi); in ubifs_mount()
2287 if (!c) { in ubifs_mount()
2292 dbg_gen("opened ubi%d_%d", c->vi.ubi_num, c->vi.vol_id); in ubifs_mount()
2294 sb = sget(fs_type, sb_test, sb_set, flags, c); in ubifs_mount()
2297 kfree(c); in ubifs_mount()
2303 kfree(c); in ubifs_mount()
2317 ubifs_msg(c, "full atime support is enabled."); in ubifs_mount()
2336 struct ubifs_info *c = s->s_fs_info; in kill_ubifs_super() local
2338 kfree(c); in kill_ubifs_super()