Lines Matching refs:c
37 static int make_idx_node(struct ubifs_info *c, struct ubifs_idx_node *idx, in make_idx_node() argument
48 struct ubifs_branch *br = ubifs_idx_branch(c, idx, i); in make_idx_node()
51 key_write_idx(c, &zbr->key, &br->key); in make_idx_node()
57 ubifs_dump_znode(c, znode); in make_idx_node()
59 ubifs_dump_znode(c, zbr->znode); in make_idx_node()
62 ubifs_prepare_node(c, idx, len, 0); in make_idx_node()
68 err = insert_old_idx_znode(c, znode); in make_idx_node()
80 c->zroot.lnum = lnum; in make_idx_node()
81 c->zroot.offs = offs; in make_idx_node()
82 c->zroot.len = len; in make_idx_node()
84 c->calc_idx_sz += ALIGN(len, 8); in make_idx_node()
86 atomic_long_dec(&c->dirty_zn_cnt); in make_idx_node()
111 static int fill_gap(struct ubifs_info *c, int lnum, int gap_start, int gap_end, in fill_gap() argument
125 while (c->enext) { in fill_gap()
126 len = ubifs_idx_node_sz(c, c->enext->child_cnt); in fill_gap()
128 struct ubifs_znode *znode = c->enext; in fill_gap()
133 err = make_idx_node(c, c->ileb_buf + gap_pos, znode, in fill_gap()
139 c->enext = znode->cnext; in fill_gap()
140 if (c->enext == c->cnext) in fill_gap()
141 c->enext = NULL; in fill_gap()
146 if (gap_end == c->leb_size) { in fill_gap()
147 c->ileb_len = ALIGN(gap_pos, c->min_io_size); in fill_gap()
149 pad_len = c->ileb_len - gap_pos; in fill_gap()
155 ubifs_pad(c, c->ileb_buf + gap_pos, pad_len); in fill_gap()
168 static int find_old_idx(struct ubifs_info *c, int lnum, int offs) in find_old_idx() argument
173 p = c->old_idx.rb_node; in find_old_idx()
203 static int is_idx_node_in_use(struct ubifs_info *c, union ubifs_key *key, in is_idx_node_in_use() argument
208 ret = is_idx_node_in_tnc(c, key, level, lnum, offs); in is_idx_node_in_use()
212 if (find_old_idx(c, lnum, offs)) in is_idx_node_in_use()
229 static int layout_leb_in_gaps(struct ubifs_info *c, int *p) in layout_leb_in_gaps() argument
237 lnum = ubifs_find_dirty_idx_leb(c); in layout_leb_in_gaps()
251 sleb = ubifs_scan(c, lnum, 0, c->ileb_buf, 0); in layout_leb_in_gaps()
252 c->ileb_len = 0; in layout_leb_in_gaps()
262 key_read(c, ubifs_idx_key(c, idx), &snod->key); in layout_leb_in_gaps()
265 in_use = is_idx_node_in_use(c, &snod->key, level, lnum, in layout_leb_in_gaps()
282 written = fill_gap(c, lnum, gap_start, gap_end, &dirt); in layout_leb_in_gaps()
292 c->ileb_len = c->leb_size; in layout_leb_in_gaps()
293 gap_end = c->leb_size; in layout_leb_in_gaps()
295 written = fill_gap(c, lnum, gap_start, gap_end, &dirt); in layout_leb_in_gaps()
303 err = ubifs_read_one_lp(c, lnum, &lp); in layout_leb_in_gaps()
306 if (lp.free == c->leb_size) { in layout_leb_in_gaps()
311 err = ubifs_change_one_lp(c, lnum, in layout_leb_in_gaps()
312 c->leb_size - c->ileb_len, in layout_leb_in_gaps()
319 err = ubifs_change_one_lp(c, lnum, c->leb_size - c->ileb_len, dirt, in layout_leb_in_gaps()
323 err = ubifs_leb_change(c, lnum, c->ileb_buf, c->ileb_len); in layout_leb_in_gaps()
339 static int get_leb_cnt(struct ubifs_info *c, int cnt) in get_leb_cnt() argument
344 cnt -= (c->leb_size - c->ihead_offs) / c->max_idx_node_sz; in get_leb_cnt()
347 d = c->leb_size / c->max_idx_node_sz; in get_leb_cnt()
361 static int layout_in_gaps(struct ubifs_info *c, int cnt) in layout_in_gaps() argument
367 c->gap_lebs = kmalloc(sizeof(int) * (c->lst.idx_lebs + 1), GFP_NOFS); in layout_in_gaps()
368 if (!c->gap_lebs) in layout_in_gaps()
371 p = c->gap_lebs; in layout_in_gaps()
373 ubifs_assert(p < c->gap_lebs + c->lst.idx_lebs); in layout_in_gaps()
374 written = layout_leb_in_gaps(c, p); in layout_in_gaps()
378 kfree(c->gap_lebs); in layout_in_gaps()
379 c->gap_lebs = NULL; in layout_in_gaps()
382 if (!dbg_is_chk_index(c)) { in layout_in_gaps()
388 ubifs_dump_budg(c, &c->bi); in layout_in_gaps()
389 ubifs_dump_lprops(c); in layout_in_gaps()
396 leb_needed_cnt = get_leb_cnt(c, cnt); in layout_in_gaps()
398 leb_needed_cnt, c->ileb_cnt); in layout_in_gaps()
399 } while (leb_needed_cnt > c->ileb_cnt); in layout_in_gaps()
413 static int layout_in_empty_space(struct ubifs_info *c) in layout_in_empty_space() argument
419 cnext = c->enext; in layout_in_empty_space()
423 lnum = c->ihead_lnum; in layout_in_empty_space()
424 buf_offs = c->ihead_offs; in layout_in_empty_space()
426 buf_len = ubifs_idx_node_sz(c, c->fanout); in layout_in_empty_space()
427 buf_len = ALIGN(buf_len, c->min_io_size); in layout_in_empty_space()
432 next_len = ubifs_idx_node_sz(c, cnext->child_cnt); in layout_in_empty_space()
433 if (buf_offs + next_len > c->leb_size) in layout_in_empty_space()
439 len = ubifs_idx_node_sz(c, znode->child_cnt); in layout_in_empty_space()
443 if (c->ileb_nxt >= c->ileb_cnt) { in layout_in_empty_space()
447 lnum = c->ilebs[c->ileb_nxt++]; in layout_in_empty_space()
471 c->zroot.lnum = lnum; in layout_in_empty_space()
472 c->zroot.offs = offs; in layout_in_empty_space()
473 c->zroot.len = len; in layout_in_empty_space()
475 c->calc_idx_sz += ALIGN(len, 8); in layout_in_empty_space()
481 atomic_long_dec(&c->dirty_zn_cnt); in layout_in_empty_space()
488 if (cnext == c->cnext) in layout_in_empty_space()
491 next_len = ubifs_idx_node_sz(c, cnext->child_cnt); in layout_in_empty_space()
499 buf_offs + used + next_len <= c->leb_size && in layout_in_empty_space()
504 buf_offs + used + next_len <= c->leb_size) in layout_in_empty_space()
507 blen = ALIGN(wlen, c->min_io_size); in layout_in_empty_space()
512 if (buf_offs + next_len > c->leb_size) { in layout_in_empty_space()
513 err = ubifs_update_one_lp(c, lnum, in layout_in_empty_space()
514 c->leb_size - buf_offs, blen - used, in layout_in_empty_space()
526 err = ubifs_update_one_lp(c, lnum, c->leb_size - buf_offs, in layout_in_empty_space()
533 c->dbg->new_ihead_lnum = lnum; in layout_in_empty_space()
534 c->dbg->new_ihead_offs = buf_offs; in layout_in_empty_space()
552 static int layout_commit(struct ubifs_info *c, int no_space, int cnt) in layout_commit() argument
557 err = layout_in_gaps(c, cnt); in layout_commit()
561 err = layout_in_empty_space(c); in layout_commit()
626 static int get_znodes_to_commit(struct ubifs_info *c) in get_znodes_to_commit() argument
631 c->cnext = find_first_dirty(c->zroot.znode); in get_znodes_to_commit()
632 znode = c->enext = c->cnext; in get_znodes_to_commit()
644 znode->cnext = c->cnext; in get_znodes_to_commit()
652 ubifs_assert(cnt == atomic_long_read(&c->dirty_zn_cnt)); in get_znodes_to_commit()
665 static int alloc_idx_lebs(struct ubifs_info *c, int cnt) in alloc_idx_lebs() argument
669 c->ileb_cnt = 0; in alloc_idx_lebs()
670 c->ileb_nxt = 0; in alloc_idx_lebs()
671 leb_cnt = get_leb_cnt(c, cnt); in alloc_idx_lebs()
675 c->ilebs = kmalloc(leb_cnt * sizeof(int), GFP_NOFS); in alloc_idx_lebs()
676 if (!c->ilebs) in alloc_idx_lebs()
679 lnum = ubifs_find_free_leb_for_idx(c); in alloc_idx_lebs()
682 c->ilebs[c->ileb_cnt++] = lnum; in alloc_idx_lebs()
685 if (dbg_is_chk_index(c) && !(prandom_u32() & 7)) in alloc_idx_lebs()
699 static int free_unused_idx_lebs(struct ubifs_info *c) in free_unused_idx_lebs() argument
703 for (i = c->ileb_nxt; i < c->ileb_cnt; i++) { in free_unused_idx_lebs()
704 lnum = c->ilebs[i]; in free_unused_idx_lebs()
706 er = ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0, in free_unused_idx_lebs()
720 static int free_idx_lebs(struct ubifs_info *c) in free_idx_lebs() argument
724 err = free_unused_idx_lebs(c); in free_idx_lebs()
725 kfree(c->ilebs); in free_idx_lebs()
726 c->ilebs = NULL; in free_idx_lebs()
740 int ubifs_tnc_start_commit(struct ubifs_info *c, struct ubifs_zbranch *zroot) in ubifs_tnc_start_commit() argument
744 mutex_lock(&c->tnc_mutex); in ubifs_tnc_start_commit()
745 err = dbg_check_tnc(c, 1); in ubifs_tnc_start_commit()
748 cnt = get_znodes_to_commit(c); in ubifs_tnc_start_commit()
752 err = alloc_idx_lebs(c, cnt); in ubifs_tnc_start_commit()
757 err = layout_commit(c, no_space, cnt); in ubifs_tnc_start_commit()
760 ubifs_assert(atomic_long_read(&c->dirty_zn_cnt) == 0); in ubifs_tnc_start_commit()
761 err = free_unused_idx_lebs(c); in ubifs_tnc_start_commit()
765 destroy_old_idx(c); in ubifs_tnc_start_commit()
766 memcpy(zroot, &c->zroot, sizeof(struct ubifs_zbranch)); in ubifs_tnc_start_commit()
768 err = ubifs_save_dirty_idx_lnums(c); in ubifs_tnc_start_commit()
772 spin_lock(&c->space_lock); in ubifs_tnc_start_commit()
781 ubifs_assert(c->bi.min_idx_lebs == ubifs_calc_min_idx_lebs(c)); in ubifs_tnc_start_commit()
782 c->bi.old_idx_sz = c->calc_idx_sz; in ubifs_tnc_start_commit()
783 c->bi.uncommitted_idx = 0; in ubifs_tnc_start_commit()
784 c->bi.min_idx_lebs = ubifs_calc_min_idx_lebs(c); in ubifs_tnc_start_commit()
785 spin_unlock(&c->space_lock); in ubifs_tnc_start_commit()
786 mutex_unlock(&c->tnc_mutex); in ubifs_tnc_start_commit()
788 dbg_cmt("number of index LEBs %d", c->lst.idx_lebs); in ubifs_tnc_start_commit()
789 dbg_cmt("size of index %llu", c->calc_idx_sz); in ubifs_tnc_start_commit()
793 free_idx_lebs(c); in ubifs_tnc_start_commit()
795 mutex_unlock(&c->tnc_mutex); in ubifs_tnc_start_commit()
806 static int write_index(struct ubifs_info *c) in write_index() argument
813 cnext = c->enext; in write_index()
821 lnum = c->ihead_lnum; in write_index()
822 buf_offs = c->ihead_offs; in write_index()
825 buf_len = ALIGN(c->max_idx_node_sz, c->min_io_size); in write_index()
830 next_len = ubifs_idx_node_sz(c, cnext->child_cnt); in write_index()
831 if (buf_offs + next_len > c->leb_size) { in write_index()
832 err = ubifs_update_one_lp(c, lnum, LPROPS_NC, 0, 0, in write_index()
843 idx = c->cbuf + used; in write_index()
850 struct ubifs_branch *br = ubifs_idx_branch(c, idx, i); in write_index()
853 key_write_idx(c, &zbr->key, &br->key); in write_index()
859 ubifs_dump_znode(c, znode); in write_index()
861 ubifs_dump_znode(c, zbr->znode); in write_index()
864 len = ubifs_idx_node_sz(c, znode->child_cnt); in write_index()
865 ubifs_prepare_node(c, idx, len, 0); in write_index()
869 lnum = c->ilebs[lnum_pos++]; in write_index()
934 if (cnext == c->cnext) in write_index()
937 next_len = ubifs_idx_node_sz(c, cnext->child_cnt); in write_index()
940 if (next_len && nxt_offs <= c->leb_size) { in write_index()
947 blen = ALIGN(wlen, c->min_io_size); in write_index()
948 ubifs_pad(c, c->cbuf + wlen, blen - wlen); in write_index()
952 err = ubifs_leb_write(c, lnum, c->cbuf, buf_offs, blen); in write_index()
957 if (nxt_offs > c->leb_size) { in write_index()
958 err = ubifs_update_one_lp(c, lnum, LPROPS_NC, 0, in write_index()
968 memmove(c->cbuf, c->cbuf + blen, used); in write_index()
974 if (lnum != c->dbg->new_ihead_lnum || in write_index()
975 buf_offs != c->dbg->new_ihead_offs) { in write_index()
980 c->ihead_lnum = lnum; in write_index()
981 c->ihead_offs = buf_offs; in write_index()
992 static void free_obsolete_znodes(struct ubifs_info *c) in free_obsolete_znodes() argument
996 cnext = c->cnext; in free_obsolete_znodes()
1004 atomic_long_inc(&c->clean_zn_cnt); in free_obsolete_znodes()
1007 } while (cnext != c->cnext); in free_obsolete_znodes()
1017 static int return_gap_lebs(struct ubifs_info *c) in return_gap_lebs() argument
1021 if (!c->gap_lebs) in return_gap_lebs()
1025 for (p = c->gap_lebs; *p != -1; p++) { in return_gap_lebs()
1026 err = ubifs_change_one_lp(c, *p, LPROPS_NC, LPROPS_NC, 0, in return_gap_lebs()
1032 kfree(c->gap_lebs); in return_gap_lebs()
1033 c->gap_lebs = NULL; in return_gap_lebs()
1043 int ubifs_tnc_end_commit(struct ubifs_info *c) in ubifs_tnc_end_commit() argument
1047 if (!c->cnext) in ubifs_tnc_end_commit()
1050 err = return_gap_lebs(c); in ubifs_tnc_end_commit()
1054 err = write_index(c); in ubifs_tnc_end_commit()
1058 mutex_lock(&c->tnc_mutex); in ubifs_tnc_end_commit()
1060 dbg_cmt("TNC height is %d", c->zroot.znode->level + 1); in ubifs_tnc_end_commit()
1062 free_obsolete_znodes(c); in ubifs_tnc_end_commit()
1064 c->cnext = NULL; in ubifs_tnc_end_commit()
1065 kfree(c->ilebs); in ubifs_tnc_end_commit()
1066 c->ilebs = NULL; in ubifs_tnc_end_commit()
1068 mutex_unlock(&c->tnc_mutex); in ubifs_tnc_end_commit()