26 int jffs2_sum_init(struct jffs2_sb_info *c)  in jffs2_sum_init()  argument
28 	uint32_t sum_size = min_t(uint32_t, c->sector_size, MAX_SUMMARY_SIZE);  in jffs2_sum_init()
30 	c->summary = kzalloc(sizeof(struct jffs2_summary), GFP_KERNEL);  in jffs2_sum_init()
32 	if (!c->summary) {  in jffs2_sum_init()
37 	c->summary->sum_buf = kmalloc(sum_size, GFP_KERNEL);  in jffs2_sum_init()
39 	if (!c->summary->sum_buf) {  in jffs2_sum_init()
41 		kfree(c->summary);  in jffs2_sum_init()
50 void jffs2_sum_exit(struct jffs2_sb_info *c)  in jffs2_sum_exit()  argument
54 	jffs2_sum_disable_collecting(c->summary);  in jffs2_sum_exit()
56 	kfree(c->summary->sum_buf);  in jffs2_sum_exit()
57 	c->summary->sum_buf = NULL;  in jffs2_sum_exit()
59 	kfree(c->summary);  in jffs2_sum_exit()
60 	c->summary = NULL;  in jffs2_sum_exit()
231 void jffs2_sum_move_collected(struct jffs2_sb_info *c, struct jffs2_summary *s)  in jffs2_sum_move_collected()  argument
234 				c->summary->sum_size, c->summary->sum_num,  in jffs2_sum_move_collected()
237 	c->summary->sum_size = s->sum_size;  in jffs2_sum_move_collected()
238 	c->summary->sum_num = s->sum_num;  in jffs2_sum_move_collected()
239 	c->summary->sum_padded = s->sum_padded;  in jffs2_sum_move_collected()
240 	c->summary->sum_list_head = s->sum_list_head;  in jffs2_sum_move_collected()
241 	c->summary->sum_list_tail = s->sum_list_tail;  in jffs2_sum_move_collected()
248 int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs,  in jffs2_sum_add_kvec()  argument
254 	if (c->summary->sum_size == JFFS2_SUMMARY_NOSUM_SIZE) {  in jffs2_sum_add_kvec()
260 	jeb = &c->blocks[ofs / c->sector_size];  in jffs2_sum_add_kvec()
278 			return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);  in jffs2_sum_add_kvec()
312 			return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);  in jffs2_sum_add_kvec()
328 			return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);  in jffs2_sum_add_kvec()
339 			return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);  in jffs2_sum_add_kvec()
344 			c->summary->sum_padded += je32_to_cpu(node->u.totlen);  in jffs2_sum_add_kvec()
370 static struct jffs2_raw_node_ref *sum_link_node_ref(struct jffs2_sb_info *c,  in sum_link_node_ref()  argument
376 	if ((ofs & ~3) > c->sector_size - jeb->free_size) {  in sum_link_node_ref()
378 		jffs2_scan_dirty_space(c, jeb, (ofs & ~3) - (c->sector_size - jeb->free_size));  in sum_link_node_ref()
381 	return jffs2_link_node_ref(c, jeb, jeb->offset + ofs, len, ic);  in sum_link_node_ref()
386 static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,  in jffs2_sum_process_sum_data()  argument
403 		err = jffs2_prealloc_raw_node_refs(c, jeb, 2);  in jffs2_sum_process_sum_data()
418 				ic = jffs2_scan_make_ino_cache(c, ino);  in jffs2_sum_process_sum_data()
424 				sum_link_node_ref(c, jeb, je32_to_cpu(spi->offset) | REF_UNCHECKED,  in jffs2_sum_process_sum_data()
467 				ic = jffs2_scan_make_ino_cache(c, je32_to_cpu(spd->pino));  in jffs2_sum_process_sum_data()
473 				fd->raw = sum_link_node_ref(c, jeb,  je32_to_cpu(spd->offset) | REF_UNCHECKED,  in jffs2_sum_process_sum_data()
482 				jffs2_add_fd_to_list(c, fd, &ic->scan_dents);  in jffs2_sum_process_sum_data()
501 				xd = jffs2_setup_xattr_datum(c, je32_to_cpu(spx->xid),  in jffs2_sum_process_sum_data()
508 						= sum_link_node_ref(c, jeb, je32_to_cpu(spx->offset) | REF_UNCHECKED,  in jffs2_sum_process_sum_data()
514 					sum_link_node_ref(c, jeb, je32_to_cpu(spx->offset) | REF_UNCHECKED,  in jffs2_sum_process_sum_data()
537 				ref->next = c->xref_temp;  in jffs2_sum_process_sum_data()
538 				c->xref_temp = ref;  in jffs2_sum_process_sum_data()
540 				sum_link_node_ref(c, jeb, je32_to_cpu(spr->offset) | REF_UNCHECKED,  in jffs2_sum_process_sum_data()
556 				c->wasted_size -= jeb->wasted_size;  in jffs2_sum_process_sum_data()
557 				c->free_size += c->sector_size - jeb->free_size;  in jffs2_sum_process_sum_data()
558 				c->used_size -= jeb->used_size;  in jffs2_sum_process_sum_data()
559 				c->dirty_size -= jeb->dirty_size;  in jffs2_sum_process_sum_data()
561 				jeb->free_size = c->sector_size;  in jffs2_sum_process_sum_data()
563 				jffs2_free_jeb_node_refs(c, jeb);  in jffs2_sum_process_sum_data()
572 int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,  in jffs2_sum_scan_sumnode()  argument
580 	ofs = c->sector_size - sumsize;  in jffs2_sum_scan_sumnode()
620 		ret = jffs2_prealloc_raw_node_refs(c, jeb, 1);  in jffs2_sum_scan_sumnode()
624 		if (je32_to_cpu(summary->cln_mkr) != c->cleanmarker_size) {  in jffs2_sum_scan_sumnode()
626 				je32_to_cpu(summary->cln_mkr), c->cleanmarker_size);  in jffs2_sum_scan_sumnode()
627 			if ((ret = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(summary->cln_mkr)))))  in jffs2_sum_scan_sumnode()
632 			if ((ret = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(summary->cln_mkr)))))  in jffs2_sum_scan_sumnode()
635 			jffs2_link_node_ref(c, jeb, jeb->offset | REF_NORMAL,  in jffs2_sum_scan_sumnode()
640 	ret = jffs2_sum_process_sum_data(c, jeb, summary, pseudo_random);  in jffs2_sum_scan_sumnode()
649 	ret = jffs2_prealloc_raw_node_refs(c, jeb, 2);  in jffs2_sum_scan_sumnode()
653 	sum_link_node_ref(c, jeb, ofs | REF_NORMAL, sumsize, NULL);  in jffs2_sum_scan_sumnode()
659 		c->wasted_size += jeb->free_size;  in jffs2_sum_scan_sumnode()
660 		c->free_size -= jeb->free_size;  in jffs2_sum_scan_sumnode()
664 	return jffs2_scan_classify_jeb(c, jeb);  in jffs2_sum_scan_sumnode()
674 static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,  in jffs2_sum_write_data()  argument
688 		jffs2_sum_disable_collecting(c->summary);  in jffs2_sum_write_data()
698 		jffs2_sum_disable_collecting(c->summary);  in jffs2_sum_write_data()
706 	memset(c->summary->sum_buf, 0xff, datasize);  in jffs2_sum_write_data()
713 	isum.padded = cpu_to_je32(c->summary->sum_padded);  in jffs2_sum_write_data()
714 	isum.cln_mkr = cpu_to_je32(c->cleanmarker_size);  in jffs2_sum_write_data()
715 	isum.sum_num = cpu_to_je32(c->summary->sum_num);  in jffs2_sum_write_data()
716 	wpage = c->summary->sum_buf;  in jffs2_sum_write_data()
718 	while (c->summary->sum_num) {  in jffs2_sum_write_data()
719 		temp = c->summary->sum_list_head;  in jffs2_sum_write_data()
759 				temp = c->summary->sum_list_head;  in jffs2_sum_write_data()
772 				temp = c->summary->sum_list_head;  in jffs2_sum_write_data()
785 					jffs2_sum_disable_collecting(c->summary);  in jffs2_sum_write_data()
792 		c->summary->sum_list_head = temp->u.next;  in jffs2_sum_write_data()
795 		c->summary->sum_num--;  in jffs2_sum_write_data()
798 	jffs2_sum_reset_collected(c->summary);  in jffs2_sum_write_data()
803 	sm->offset = cpu_to_je32(c->sector_size - jeb->free_size);  in jffs2_sum_write_data()
806 	isum.sum_crc = cpu_to_je32(crc32(0, c->summary->sum_buf, datasize));  in jffs2_sum_write_data()
811 	vecs[1].iov_base = c->summary->sum_buf;  in jffs2_sum_write_data()
814 	sum_ofs = jeb->offset + c->sector_size - jeb->free_size;  in jffs2_sum_write_data()
818 	ret = jffs2_flash_writev(c, vecs, 2, sum_ofs, &retlen, 0);  in jffs2_sum_write_data()
827 			spin_lock(&c->erase_completion_lock);  in jffs2_sum_write_data()
828 			jffs2_link_node_ref(c, jeb, sum_ofs | REF_OBSOLETE, infosize, NULL);  in jffs2_sum_write_data()
829 			spin_unlock(&c->erase_completion_lock);  in jffs2_sum_write_data()
832 		c->summary->sum_size = JFFS2_SUMMARY_NOSUM_SIZE;  in jffs2_sum_write_data()
837 	spin_lock(&c->erase_completion_lock);  in jffs2_sum_write_data()
838 	jffs2_link_node_ref(c, jeb, sum_ofs | REF_NORMAL, infosize, NULL);  in jffs2_sum_write_data()
839 	spin_unlock(&c->erase_completion_lock);  in jffs2_sum_write_data()
846 int jffs2_sum_write_sumnode(struct jffs2_sb_info *c)  in jffs2_sum_write_sumnode()  argument
847 	__must_hold(&c->erase_completion_block)  in jffs2_sum_write_sumnode()
855 	spin_unlock(&c->erase_completion_lock);  in jffs2_sum_write_sumnode()
857 	jeb = c->nextblock;  in jffs2_sum_write_sumnode()
858 	jffs2_prealloc_raw_node_refs(c, jeb, 1);  in jffs2_sum_write_sumnode()
860 	if (!c->summary->sum_num || !c->summary->sum_list_head) {  in jffs2_sum_write_sumnode()
865 	datasize = c->summary->sum_size + sizeof(struct jffs2_sum_marker);  in jffs2_sum_write_sumnode()
871 	ret = jffs2_sum_write_data(c, jeb, infosize, datasize, padsize);  in jffs2_sum_write_sumnode()
872 	spin_lock(&c->erase_completion_lock);  in jffs2_sum_write_sumnode()