fs/ubifs/log.c

25  * @lnum: logical eraseblock number to search
27  * This function searches bud LEB @lnum. Returns bud description object in case
30 struct ubifs_bud *ubifs_search_bud(struct ubifs_info *c, int lnum)
39 		if (lnum < bud->lnum)
41 		else if (lnum > bud->lnum)
55  * @lnum: logical eraseblock number to search
57  * This functions returns the wbuf for @lnum or %NULL if there is not one.
59 struct ubifs_wbuf *ubifs_get_wbuf(struct ubifs_info *c, int lnum)
72 		if (lnum < bud->lnum)
74 		else if (lnum > bud->lnum)
123 		ubifs_assert(c, bud->lnum != b->lnum);
124 		if (bud->lnum < b->lnum)
146 	dbg_log("LEB %d:%d, jhead %s, bud_bytes %lld", bud->lnum,
155  * @lnum: LEB number of the bud
158  * This function writes a reference node for the new bud LEB @lnum to the log,
164 int ubifs_add_bud_to_log(struct ubifs_info *c, int jhead, int lnum, int offs)
224 	bud->lnum = lnum;
230 	ref->lnum = cpu_to_le32(bud->lnum);
255 		err = ubifs_leb_map(c, bud->lnum);
314 		if (wbuf->lnum == bud->lnum) {
321 				bud->lnum, bud->start, dbg_jhead(bud->jhead),
327 				bud->lnum, bud->start, dbg_jhead(bud->jhead),
394 		int lnum = c->jheads[i].wbuf.lnum;
397 		if (lnum == -1 || offs == c->leb_size)
401 			lnum, offs, dbg_jhead(i));
404 		ref->lnum = cpu_to_le32(lnum);
517 	int lnum, err = 0;
523 		err = ubifs_return_leb(c, bud->lnum);
531 	for (lnum = old_ltail_lnum; lnum != c->ltail_lnum;
532 	     lnum = ubifs_next_log_lnum(c, lnum)) {
533 		dbg_log("unmap log LEB %d", lnum);
534 		err = ubifs_leb_unmap(c, lnum);
546  * @lnum: LEB number
550 	int lnum;
556  * @lnum: LEB number of reference
561 static int done_already(struct rb_root *done_tree, int lnum)
569 		if (lnum < dr->lnum)
571 		else if (lnum > dr->lnum)
581 	dr->lnum = lnum;
605  * @lnum: LEB number to which to write is passed and returned here
611 static int add_node(struct ubifs_info *c, void *buf, int *lnum, int *offs,
621 		err = ubifs_leb_change(c, *lnum, buf, sz);
624 		*lnum = ubifs_next_log_lnum(c, *lnum);
647 	int lnum, err, first = 1, write_lnum, offs = 0;
655 	lnum = c->ltail_lnum;
656 	write_lnum = lnum;
658 		sleb = ubifs_scan(c, lnum, 0, c->sbuf, 0);
667 				int ref_lnum = le32_to_cpu(ref->lnum);
692 		if (lnum == c->lhead_lnum)
694 		lnum = ubifs_next_log_lnum(c, lnum);
712 	lnum = write_lnum;
714 		lnum = ubifs_next_log_lnum(c, lnum);
715 		err = ubifs_leb_unmap(c, lnum);
718 	} while (lnum != c->lhead_lnum);