65 static int segment_is_reserved(struct super_block *sb, u32 segno)  in segment_is_reserved()  argument
73 	reserved = btree_lookup32(&super->s_reserved_segments, segno);  in segment_is_reserved()
80 		if (area->a_is_open && area->a_segno == segno)  in segment_is_reserved()
87 static void logfs_mark_segment_bad(struct super_block *sb, u32 segno)  in logfs_mark_segment_bad()  argument
96 static u32 logfs_valid_bytes(struct super_block *sb, u32 segno, u32 *ec,  in logfs_valid_bytes()  argument
102 	logfs_get_segment_entry(sb, segno, &se);  in logfs_valid_bytes()
125 static u32 logfs_gc_segment(struct super_block *sb, u32 segno)  in logfs_gc_segment()  argument
135 	LOGFS_BUG_ON(segment_is_reserved(sb, segno), sb);  in logfs_gc_segment()
137 	btree_insert32(&super->s_reserved_segments, segno, (void *)1, GFP_NOFS);  in logfs_gc_segment()
138 	err = wbuf_read(sb, dev_ofs(sb, segno, 0), sizeof(sh), &sh);  in logfs_gc_segment()
141 	logical_segno = be32_to_cpu(sh.segno);  in logfs_gc_segment()
143 		logfs_mark_segment_bad(sb, segno);  in logfs_gc_segment()
151 		err = wbuf_read(sb, dev_ofs(sb, segno, seg_ofs), sizeof(oh),  in logfs_gc_segment()
159 			logfs_mark_segment_bad(sb, segno);  in logfs_gc_segment()
178 	btree_remove32(&super->s_reserved_segments, segno);  in logfs_gc_segment()
230 	btree_remove32(&super->s_cand_tree, cand->segno);  in free_candidate()
237 	u32 segno;  in get_best_cand()  local
243 	segno = cand->segno;  in get_best_cand()
247 	return segno;  in get_best_cand()
276 				cand->segno, cand->erase_count,  in __add_candidate()
277 				dev_ofs(sb, cand->segno, 0));  in __add_candidate()
281 					cand->segno, cand->erase_count,  in __add_candidate()
282 					dev_ofs(sb, cand->segno, 0));  in __add_candidate()
298 static int add_candidate(struct super_block *sb, u32 segno, u32 valid, u32 ec,  in add_candidate()  argument
308 	cand->segno = segno;  in add_candidate()
313 	btree_insert32(&super->s_cand_tree, segno, cand, GFP_NOFS);  in add_candidate()
318 static void remove_segment_from_lists(struct super_block *sb, u32 segno)  in remove_segment_from_lists()  argument
323 	cand = btree_lookup32(&super->s_cand_tree, segno);  in remove_segment_from_lists()
330 static void scan_segment(struct super_block *sb, u32 segno)  in scan_segment()  argument
336 	if (segment_is_reserved(sb, segno))  in scan_segment()
339 	remove_segment_from_lists(sb, segno);  in scan_segment()
340 	valid = logfs_valid_bytes(sb, segno, &ec, &gc_level);  in scan_segment()
345 	add_candidate(sb, segno, valid, ec, dist);  in scan_segment()
388 	u32 cleaned, valid, segno, ec;  in __logfs_gc_once()  local
396 	segno = cand->segno;  in __logfs_gc_once()
398 	valid = logfs_valid_bytes(sb, segno, &ec, &gc_level);  in __logfs_gc_once()
401 			segno, (u64)segno << super->s_segshift,  in __logfs_gc_once()
404 	cleaned = logfs_gc_segment(sb, segno);  in __logfs_gc_once()
405 	log_gc("GC segment #%02x complete - now %x valid\n", segno,  in __logfs_gc_once()
425 	u32 segno;  in logfs_scan_some()  local
428 	segno = super->s_sweeper;  in logfs_scan_some()
430 		segno++;  in logfs_scan_some()
431 		if (segno >= super->s_no_segs) {  in logfs_scan_some()
432 			segno = 0;  in logfs_scan_some()
441 		scan_segment(sb, segno);  in logfs_scan_some()
443 	super->s_sweeper = segno;  in logfs_scan_some()
602 		u32 segno = seg_no(sb, super->s_sb_ofs[i]);  in logfs_journal_wl_pass()  local
605 		logfs_get_segment_entry(sb, segno, &se);  in logfs_journal_wl_pass()
637 	u32 segno = area->a_segno;  in check_area()  local
656 	valid = logfs_valid_bytes(sb, segno, &ec, &gc_level);  in check_area()
657 	cleaned = logfs_gc_segment(sb, segno);  in check_area()