115 static int reserve_space(struct ubifs_info *c, int jhead, int len)  in reserve_space()  argument
118 	struct ubifs_wbuf *wbuf = &c->jheads[jhead].wbuf;  in reserve_space()
125 	ubifs_assert(!c->ro_media && !c->ro_mount);  in reserve_space()
130 	if (c->ro_error) {  in reserve_space()
135 	avail = c->leb_size - wbuf->offs - wbuf->used;  in reserve_space()
143 	lnum = ubifs_find_free_space(c, len, &offs, squeeze);  in reserve_space()
159 	lnum = ubifs_garbage_collect(c, 0);  in reserve_space()
184 	avail = c->leb_size - wbuf->offs - wbuf->used;  in reserve_space()
194 		err = ubifs_return_leb(c, lnum);  in reserve_space()
214 	err = ubifs_add_bud_to_log(c, jhead, lnum, offs);  in reserve_space()
230 	err1 = ubifs_return_leb(c, lnum);  in reserve_space()
255 static int write_node(struct ubifs_info *c, int jhead, void *node, int len,  in write_node()  argument
258 	struct ubifs_wbuf *wbuf = &c->jheads[jhead].wbuf;  in write_node()
262 	*lnum = c->jheads[jhead].wbuf.lnum;  in write_node()
263 	*offs = c->jheads[jhead].wbuf.offs + c->jheads[jhead].wbuf.used;  in write_node()
267 	ubifs_prepare_node(c, node, len, 0);  in write_node()
286 static int write_head(struct ubifs_info *c, int jhead, void *buf, int len,  in write_head()  argument
290 	struct ubifs_wbuf *wbuf = &c->jheads[jhead].wbuf;  in write_head()
294 	*lnum = c->jheads[jhead].wbuf.lnum;  in write_head()
295 	*offs = c->jheads[jhead].wbuf.offs + c->jheads[jhead].wbuf.used;  in write_head()
323 static int make_reservation(struct ubifs_info *c, int jhead, int len)  in make_reservation()  argument
328 	down_read(&c->commit_sem);  in make_reservation()
329 	err = reserve_space(c, jhead, len);  in make_reservation()
332 	up_read(&c->commit_sem);  in make_reservation()
366 		ubifs_err(c, "stuck in space allocation");  in make_reservation()
370 		ubifs_warn(c, "too many space allocation re-tries (%d)",  in make_reservation()
377 	err = ubifs_run_commit(c);  in make_reservation()
383 	ubifs_err(c, "cannot reserve %d bytes in jhead %d, error %d",  in make_reservation()
387 		down_write(&c->commit_sem);  in make_reservation()
389 		ubifs_dump_budg(c, &c->bi);  in make_reservation()
390 		ubifs_dump_lprops(c);  in make_reservation()
391 		cmt_retries = dbg_check_lprops(c);  in make_reservation()
392 		up_write(&c->commit_sem);  in make_reservation()
406 static inline void release_head(struct ubifs_info *c, int jhead)  in release_head()  argument
408 	mutex_unlock(&c->jheads[jhead].wbuf.io_mutex);  in release_head()
418 static void finish_reservation(struct ubifs_info *c)  in finish_reservation()  argument
420 	up_read(&c->commit_sem);  in finish_reservation()
457 static void pack_inode(struct ubifs_info *c, struct ubifs_ino_node *ino,  in pack_inode()  argument
464 	ino_key_init_flash(c, &ino->key, inode->i_ino);  in pack_inode()
494 	ubifs_prep_grp_node(c, ino, UBIFS_INO_NODE_SZ + data_len, last);  in pack_inode()
507 static void mark_inode_clean(struct ubifs_info *c, struct ubifs_inode *ui)  in mark_inode_clean()  argument
510 		ubifs_release_dirty_inode_budget(c, ui);  in mark_inode_clean()
541 int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,  in ubifs_jnl_update()  argument
584 	err = make_reservation(c, BASEHD, len);  in ubifs_jnl_update()
590 		dent_key_init(c, &dent_key, dir->i_ino, nm);  in ubifs_jnl_update()
593 		xent_key_init(c, &dent_key, dir->i_ino, nm);  in ubifs_jnl_update()
596 	key_write(c, &dent_key, dent->key);  in ubifs_jnl_update()
603 	ubifs_prep_grp_node(c, dent, dlen, 0);  in ubifs_jnl_update()
606 	pack_inode(c, ino, inode, 0);  in ubifs_jnl_update()
608 	pack_inode(c, ino, dir, 1);  in ubifs_jnl_update()
611 		err = ubifs_add_orphan(c, inode->i_ino);  in ubifs_jnl_update()
613 			release_head(c, BASEHD);  in ubifs_jnl_update()
616 		ui->del_cmtno = c->cmt_no;  in ubifs_jnl_update()
619 	err = write_head(c, BASEHD, dent, len, &lnum, &dent_offs, sync);  in ubifs_jnl_update()
623 		struct ubifs_wbuf *wbuf = &c->jheads[BASEHD].wbuf;  in ubifs_jnl_update()
628 	release_head(c, BASEHD);  in ubifs_jnl_update()
632 		err = ubifs_tnc_remove_nm(c, &dent_key, nm);  in ubifs_jnl_update()
635 		err = ubifs_add_dirt(c, lnum, dlen);  in ubifs_jnl_update()
637 		err = ubifs_tnc_add_nm(c, &dent_key, lnum, dent_offs, dlen, nm);  in ubifs_jnl_update()
647 	ino_key_init(c, &ino_key, inode->i_ino);  in ubifs_jnl_update()
649 	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, ilen);  in ubifs_jnl_update()
653 	ino_key_init(c, &ino_key, dir->i_ino);  in ubifs_jnl_update()
655 	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs,  in ubifs_jnl_update()
660 	finish_reservation(c);  in ubifs_jnl_update()
664 	mark_inode_clean(c, ui);  in ubifs_jnl_update()
665 	mark_inode_clean(c, host_ui);  in ubifs_jnl_update()
669 	finish_reservation(c);  in ubifs_jnl_update()
675 	release_head(c, BASEHD);  in ubifs_jnl_update()
678 	ubifs_ro_mode(c, err);  in ubifs_jnl_update()
680 		ubifs_delete_orphan(c, inode->i_ino);  in ubifs_jnl_update()
681 	finish_reservation(c);  in ubifs_jnl_update()
696 int ubifs_jnl_write_data(struct ubifs_info *c, const struct inode *inode,  in ubifs_jnl_write_data()  argument
705 		(unsigned long)key_inum(c, key), key_block(c, key), len);  in ubifs_jnl_write_data()
718 		mutex_lock(&c->write_reserve_mutex);  in ubifs_jnl_write_data()
719 		data = c->write_reserve_buf;  in ubifs_jnl_write_data()
723 	key_write(c, key, &data->key);  in ubifs_jnl_write_data()
734 	ubifs_compress(c, buf, len, &data->data, &out_len, &compr_type);  in ubifs_jnl_write_data()
741 	err = make_reservation(c, DATAHD, dlen);  in ubifs_jnl_write_data()
745 	err = write_node(c, DATAHD, data, dlen, &lnum, &offs);  in ubifs_jnl_write_data()
748 	ubifs_wbuf_add_ino_nolock(&c->jheads[DATAHD].wbuf, key_inum(c, key));  in ubifs_jnl_write_data()
749 	release_head(c, DATAHD);  in ubifs_jnl_write_data()
751 	err = ubifs_tnc_add(c, key, lnum, offs, dlen);  in ubifs_jnl_write_data()
755 	finish_reservation(c);  in ubifs_jnl_write_data()
757 		mutex_unlock(&c->write_reserve_mutex);  in ubifs_jnl_write_data()
763 	release_head(c, DATAHD);  in ubifs_jnl_write_data()
765 	ubifs_ro_mode(c, err);  in ubifs_jnl_write_data()
766 	finish_reservation(c);  in ubifs_jnl_write_data()
769 		mutex_unlock(&c->write_reserve_mutex);  in ubifs_jnl_write_data()
784 int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode)  in ubifs_jnl_write_inode()  argument
806 	err = make_reservation(c, BASEHD, len);  in ubifs_jnl_write_inode()
810 	pack_inode(c, ino, inode, 1);  in ubifs_jnl_write_inode()
811 	err = write_head(c, BASEHD, ino, len, &lnum, &offs, sync);  in ubifs_jnl_write_inode()
815 		ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf,  in ubifs_jnl_write_inode()
817 	release_head(c, BASEHD);  in ubifs_jnl_write_inode()
820 		err = ubifs_tnc_remove_ino(c, inode->i_ino);  in ubifs_jnl_write_inode()
823 		ubifs_delete_orphan(c, inode->i_ino);  in ubifs_jnl_write_inode()
824 		err = ubifs_add_dirt(c, lnum, len);  in ubifs_jnl_write_inode()
828 		ino_key_init(c, &key, inode->i_ino);  in ubifs_jnl_write_inode()
829 		err = ubifs_tnc_add(c, &key, lnum, offs, len);  in ubifs_jnl_write_inode()
834 	finish_reservation(c);  in ubifs_jnl_write_inode()
842 	release_head(c, BASEHD);  in ubifs_jnl_write_inode()
844 	ubifs_ro_mode(c, err);  in ubifs_jnl_write_inode()
845 	finish_reservation(c);  in ubifs_jnl_write_inode()
880 int ubifs_jnl_delete_inode(struct ubifs_info *c, const struct inode *inode)  in ubifs_jnl_delete_inode()  argument
887 	if (ui->del_cmtno != c->cmt_no)  in ubifs_jnl_delete_inode()
889 		return ubifs_jnl_write_inode(c, inode);  in ubifs_jnl_delete_inode()
891 	down_read(&c->commit_sem);  in ubifs_jnl_delete_inode()
896 	if (ui->del_cmtno != c->cmt_no) {  in ubifs_jnl_delete_inode()
897 		up_read(&c->commit_sem);  in ubifs_jnl_delete_inode()
898 		return ubifs_jnl_write_inode(c, inode);  in ubifs_jnl_delete_inode()
901 	err = ubifs_tnc_remove_ino(c, inode->i_ino);  in ubifs_jnl_delete_inode()
903 		ubifs_ro_mode(c, err);  in ubifs_jnl_delete_inode()
905 		ubifs_delete_orphan(c, inode->i_ino);  in ubifs_jnl_delete_inode()
906 	up_read(&c->commit_sem);  in ubifs_jnl_delete_inode()
924 int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,  in ubifs_jnl_rename()  argument
968 	err = make_reservation(c, BASEHD, len);  in ubifs_jnl_rename()
974 	dent_key_init_flash(c, &dent->key, new_dir->i_ino, &new_dentry->d_name);  in ubifs_jnl_rename()
981 	ubifs_prep_grp_node(c, dent, dlen1, 0);  in ubifs_jnl_rename()
986 	dent_key_init_flash(c, &dent2->key, old_dir->i_ino,  in ubifs_jnl_rename()
994 	ubifs_prep_grp_node(c, dent2, dlen2, 0);  in ubifs_jnl_rename()
998 		pack_inode(c, p, new_inode, 0);  in ubifs_jnl_rename()
1003 		pack_inode(c, p, old_dir, 1);  in ubifs_jnl_rename()
1005 		pack_inode(c, p, old_dir, 0);  in ubifs_jnl_rename()
1007 		pack_inode(c, p, new_dir, 1);  in ubifs_jnl_rename()
1011 		err = ubifs_add_orphan(c, new_inode->i_ino);  in ubifs_jnl_rename()
1013 			release_head(c, BASEHD);  in ubifs_jnl_rename()
1016 		new_ui->del_cmtno = c->cmt_no;  in ubifs_jnl_rename()
1019 	err = write_head(c, BASEHD, dent, len, &lnum, &offs, sync);  in ubifs_jnl_rename()
1023 		struct ubifs_wbuf *wbuf = &c->jheads[BASEHD].wbuf;  in ubifs_jnl_rename()
1028 			ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf,  in ubifs_jnl_rename()
1031 	release_head(c, BASEHD);  in ubifs_jnl_rename()
1033 	dent_key_init(c, &key, new_dir->i_ino, &new_dentry->d_name);  in ubifs_jnl_rename()
1034 	err = ubifs_tnc_add_nm(c, &key, lnum, offs, dlen1, &new_dentry->d_name);  in ubifs_jnl_rename()
1038 	err = ubifs_add_dirt(c, lnum, dlen2);  in ubifs_jnl_rename()
1042 	dent_key_init(c, &key, old_dir->i_ino, &old_dentry->d_name);  in ubifs_jnl_rename()
1043 	err = ubifs_tnc_remove_nm(c, &key, &old_dentry->d_name);  in ubifs_jnl_rename()
1049 		ino_key_init(c, &key, new_inode->i_ino);  in ubifs_jnl_rename()
1050 		err = ubifs_tnc_add(c, &key, lnum, offs, ilen);  in ubifs_jnl_rename()
1056 	ino_key_init(c, &key, old_dir->i_ino);  in ubifs_jnl_rename()
1057 	err = ubifs_tnc_add(c, &key, lnum, offs, plen);  in ubifs_jnl_rename()
1063 		ino_key_init(c, &key, new_dir->i_ino);  in ubifs_jnl_rename()
1064 		err = ubifs_tnc_add(c, &key, lnum, offs, plen);  in ubifs_jnl_rename()
1069 	finish_reservation(c);  in ubifs_jnl_rename()
1071 		mark_inode_clean(c, new_ui);  in ubifs_jnl_rename()
1076 	mark_inode_clean(c, ubifs_inode(old_dir));  in ubifs_jnl_rename()
1078 		mark_inode_clean(c, ubifs_inode(new_dir));  in ubifs_jnl_rename()
1083 	release_head(c, BASEHD);  in ubifs_jnl_rename()
1085 	ubifs_ro_mode(c, err);  in ubifs_jnl_rename()
1087 		ubifs_delete_orphan(c, new_inode->i_ino);  in ubifs_jnl_rename()
1089 	finish_reservation(c);  in ubifs_jnl_rename()
1103 static int recomp_data_node(const struct ubifs_info *c,  in recomp_data_node()  argument
1116 	err = ubifs_decompress(c, &dn->data, len, buf, &out_len, compr_type);  in recomp_data_node()
1120 	ubifs_compress(c, buf, *new_len, &dn->data, &out_len, &compr_type);  in recomp_data_node()
1145 int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode,  in ubifs_jnl_truncate()  argument
1181 		data_key_init(c, &key, inum, blk);  in ubifs_jnl_truncate()
1183 		err = ubifs_tnc_lookup(c, &key, dn);  in ubifs_jnl_truncate()
1195 					err = recomp_data_node(c, dn, &dlen);  in ubifs_jnl_truncate()
1211 	err = make_reservation(c, BASEHD, len);  in ubifs_jnl_truncate()
1215 	pack_inode(c, ino, inode, 0);  in ubifs_jnl_truncate()
1216 	ubifs_prep_grp_node(c, trun, UBIFS_TRUN_NODE_SZ, dlen ? 0 : 1);  in ubifs_jnl_truncate()
1218 		ubifs_prep_grp_node(c, dn, dlen, 1);  in ubifs_jnl_truncate()
1220 	err = write_head(c, BASEHD, ino, len, &lnum, &offs, sync);  in ubifs_jnl_truncate()
1224 		ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf, inum);  in ubifs_jnl_truncate()
1225 	release_head(c, BASEHD);  in ubifs_jnl_truncate()
1229 		err = ubifs_tnc_add(c, &key, lnum, sz, dlen);  in ubifs_jnl_truncate()
1234 	ino_key_init(c, &key, inum);  in ubifs_jnl_truncate()
1235 	err = ubifs_tnc_add(c, &key, lnum, offs, UBIFS_INO_NODE_SZ);  in ubifs_jnl_truncate()
1239 	err = ubifs_add_dirt(c, lnum, UBIFS_TRUN_NODE_SZ);  in ubifs_jnl_truncate()
1245 	data_key_init(c, &key, inum, blk);  in ubifs_jnl_truncate()
1249 	data_key_init(c, &to_key, inum, blk);  in ubifs_jnl_truncate()
1251 	err = ubifs_tnc_remove_range(c, &key, &to_key);  in ubifs_jnl_truncate()
1255 	finish_reservation(c);  in ubifs_jnl_truncate()
1259 	mark_inode_clean(c, ui);  in ubifs_jnl_truncate()
1264 	release_head(c, BASEHD);  in ubifs_jnl_truncate()
1266 	ubifs_ro_mode(c, err);  in ubifs_jnl_truncate()
1267 	finish_reservation(c);  in ubifs_jnl_truncate()
1286 int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,  in ubifs_jnl_delete_xattr()  argument
1316 	err = make_reservation(c, BASEHD, len);  in ubifs_jnl_delete_xattr()
1323 	xent_key_init(c, &xent_key, host->i_ino, nm);  in ubifs_jnl_delete_xattr()
1324 	key_write(c, &xent_key, xent->key);  in ubifs_jnl_delete_xattr()
1331 	ubifs_prep_grp_node(c, xent, xlen, 0);  in ubifs_jnl_delete_xattr()
1334 	pack_inode(c, ino, inode, 0);  in ubifs_jnl_delete_xattr()
1336 	pack_inode(c, ino, host, 1);  in ubifs_jnl_delete_xattr()
1338 	err = write_head(c, BASEHD, xent, len, &lnum, &xent_offs, sync);  in ubifs_jnl_delete_xattr()
1340 		ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf, host->i_ino);  in ubifs_jnl_delete_xattr()
1341 	release_head(c, BASEHD);  in ubifs_jnl_delete_xattr()
1347 	err = ubifs_tnc_remove_nm(c, &xent_key, nm);  in ubifs_jnl_delete_xattr()
1350 	err = ubifs_add_dirt(c, lnum, xlen);  in ubifs_jnl_delete_xattr()
1358 	lowest_ino_key(c, &key1, inode->i_ino);  in ubifs_jnl_delete_xattr()
1359 	highest_ino_key(c, &key2, inode->i_ino);  in ubifs_jnl_delete_xattr()
1360 	err = ubifs_tnc_remove_range(c, &key1, &key2);  in ubifs_jnl_delete_xattr()
1363 	err = ubifs_add_dirt(c, lnum, UBIFS_INO_NODE_SZ);  in ubifs_jnl_delete_xattr()
1368 	ino_key_init(c, &key1, host->i_ino);  in ubifs_jnl_delete_xattr()
1369 	err = ubifs_tnc_add(c, &key1, lnum, xent_offs + len - hlen, hlen);  in ubifs_jnl_delete_xattr()
1373 	finish_reservation(c);  in ubifs_jnl_delete_xattr()
1377 	mark_inode_clean(c, host_ui);  in ubifs_jnl_delete_xattr()
1381 	ubifs_ro_mode(c, err);  in ubifs_jnl_delete_xattr()
1382 	finish_reservation(c);  in ubifs_jnl_delete_xattr()
1399 int ubifs_jnl_change_xattr(struct ubifs_info *c, const struct inode *inode,  in ubifs_jnl_change_xattr()  argument
1423 	err = make_reservation(c, BASEHD, aligned_len);  in ubifs_jnl_change_xattr()
1427 	pack_inode(c, ino, host, 0);  in ubifs_jnl_change_xattr()
1428 	pack_inode(c, (void *)ino + aligned_len1, inode, 1);  in ubifs_jnl_change_xattr()
1430 	err = write_head(c, BASEHD, ino, aligned_len, &lnum, &offs, 0);  in ubifs_jnl_change_xattr()
1432 		struct ubifs_wbuf *wbuf = &c->jheads[BASEHD].wbuf;  in ubifs_jnl_change_xattr()
1437 	release_head(c, BASEHD);  in ubifs_jnl_change_xattr()
1441 	ino_key_init(c, &key, host->i_ino);  in ubifs_jnl_change_xattr()
1442 	err = ubifs_tnc_add(c, &key, lnum, offs, len1);  in ubifs_jnl_change_xattr()
1446 	ino_key_init(c, &key, inode->i_ino);  in ubifs_jnl_change_xattr()
1447 	err = ubifs_tnc_add(c, &key, lnum, offs + aligned_len1, len2);  in ubifs_jnl_change_xattr()
1451 	finish_reservation(c);  in ubifs_jnl_change_xattr()
1455 	mark_inode_clean(c, host_ui);  in ubifs_jnl_change_xattr()
1460 	ubifs_ro_mode(c, err);  in ubifs_jnl_change_xattr()
1461 	finish_reservation(c);  in ubifs_jnl_change_xattr()