65 static int jffs2_do_reserve_space(struct jffs2_sb_info *c,  __u32 minsize, __u32 *ofs, __u32 *len);
67 int jffs2_reserve_space(struct jffs2_sb_info *c, __u32 minsize, __u32 *ofs, __u32 *len, int prio)  in jffs2_reserve_space()  argument
78 	down(&c->alloc_sem);  in jffs2_reserve_space()
82 	spin_lock_bh(&c->erase_completion_lock);  in jffs2_reserve_space()
86 		while(c->nr_free_blocks + c->nr_erasing_blocks < blocksneeded) {  in jffs2_reserve_space()
89 			up(&c->alloc_sem);  in jffs2_reserve_space()
90 			if (c->dirty_size < c->sector_size) {  in jffs2_reserve_space()
91 …e, but total dirty size 0x%08x < sector size 0x%08x, so -ENOSPC\n", c->dirty_size, c->sector_size)…  in jffs2_reserve_space()
92 				spin_unlock_bh(&c->erase_completion_lock);  in jffs2_reserve_space()
96 …c->nr_free_blocks, c->nr_erasing_blocks, c->free_size, c->dirty_size, c->used_size, c->erasing_siz…  in jffs2_reserve_space()
97 				  c->free_size + c->dirty_size + c->used_size + c->erasing_size + c->bad_size, c->flash_size));  in jffs2_reserve_space()
98 			spin_unlock_bh(&c->erase_completion_lock);  in jffs2_reserve_space()
100 			ret = jffs2_garbage_collect_pass(c);  in jffs2_reserve_space()
110 			down(&c->alloc_sem);  in jffs2_reserve_space()
111 			spin_lock_bh(&c->erase_completion_lock);  in jffs2_reserve_space()
114 		ret = jffs2_do_reserve_space(c, minsize, ofs, len);  in jffs2_reserve_space()
119 	spin_unlock_bh(&c->erase_completion_lock);  in jffs2_reserve_space()
121 		up(&c->alloc_sem);  in jffs2_reserve_space()
125 int jffs2_reserve_space_gc(struct jffs2_sb_info *c, __u32 minsize, __u32 *ofs, __u32 *len)  in jffs2_reserve_space_gc()  argument
132 	spin_lock_bh(&c->erase_completion_lock);  in jffs2_reserve_space_gc()
134 		ret = jffs2_do_reserve_space(c, minsize, ofs, len);  in jffs2_reserve_space_gc()
139 	spin_unlock_bh(&c->erase_completion_lock);  in jffs2_reserve_space_gc()
144 static int jffs2_do_reserve_space(struct jffs2_sb_info *c,  __u32 minsize, __u32 *ofs, __u32 *len)  in jffs2_do_reserve_space()  argument
146 	struct jffs2_eraseblock *jeb = c->nextblock;  in jffs2_do_reserve_space()
151 		c->dirty_size += jeb->free_size;  in jffs2_do_reserve_space()
152 		c->free_size -= jeb->free_size;  in jffs2_do_reserve_space()
157 		list_add_tail(&jeb->list, &c->dirty_list);  in jffs2_do_reserve_space()
158 		c->nextblock = jeb = NULL;  in jffs2_do_reserve_space()
165 		if (list_empty(&c->free_list)) {  in jffs2_do_reserve_space()
169 			if (!c->nr_erasing_blocks) {  in jffs2_do_reserve_space()
174 …c->nr_erasing_blocks, c->nr_free_blocks, list_empty(&c->erasing_list)?"yes":"no", list_empty(&c->e…  in jffs2_do_reserve_space()
180 			add_wait_queue(&c->erase_wait, &wait);  in jffs2_do_reserve_space()
182 …c->nr_erasing_blocks, list_empty(&c->erasing_list)?"yes":"no", list_empty(&c->erase_pending_list)?…  in jffs2_do_reserve_space()
183 			if (!list_empty(&c->erase_pending_list)) {  in jffs2_do_reserve_space()
185 				jffs2_erase_pending_trigger(c);  in jffs2_do_reserve_space()
187 			spin_unlock_bh(&c->erase_completion_lock);  in jffs2_do_reserve_space()
189 			remove_wait_queue(&c->erase_wait, &wait);  in jffs2_do_reserve_space()
190 			spin_lock_bh(&c->erase_completion_lock);  in jffs2_do_reserve_space()
200 		next = c->free_list.next;  in jffs2_do_reserve_space()
202 		c->nextblock = jeb = list_entry(next, struct jffs2_eraseblock, list);  in jffs2_do_reserve_space()
203 		c->nr_free_blocks--;  in jffs2_do_reserve_space()
204 		if (jeb->free_size != c->sector_size - sizeof(struct jffs2_unknown_node)) {  in jffs2_do_reserve_space()
211 	*ofs = jeb->offset + (c->sector_size - jeb->free_size);  in jffs2_do_reserve_space()
230 int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new, __u32 len,…  in jffs2_add_physical_node_ref()  argument
235 	jeb = &c->blocks[(new->flash_offset & ~3) / c->sector_size];  in jffs2_add_physical_node_ref()
238 …if (jeb != c->nextblock || (new->flash_offset & ~3) != jeb->offset + (c->sector_size - jeb->free_s…  in jffs2_add_physical_node_ref()
250 	spin_lock_bh(&c->erase_completion_lock);  in jffs2_add_physical_node_ref()
252 	c->free_size -= len;  in jffs2_add_physical_node_ref()
256 		c->dirty_size += len;  in jffs2_add_physical_node_ref()
259 		c->used_size += len;  in jffs2_add_physical_node_ref()
261 	spin_unlock_bh(&c->erase_completion_lock);  in jffs2_add_physical_node_ref()
266 		list_add_tail(&jeb->list, &c->clean_list);  in jffs2_add_physical_node_ref()
267 		c->nextblock = NULL;  in jffs2_add_physical_node_ref()
269 	ACCT_SANITY_CHECK(c,jeb);  in jffs2_add_physical_node_ref()
276 void jffs2_complete_reservation(struct jffs2_sb_info *c)  in jffs2_complete_reservation()  argument
279 	jffs2_garbage_collect_trigger(c);  in jffs2_complete_reservation()
280 	up(&c->alloc_sem);  in jffs2_complete_reservation()
283 void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref)  in jffs2_mark_node_obsolete()  argument
299 	blocknr = ref->flash_offset / c->sector_size;  in jffs2_mark_node_obsolete()
300 	if (blocknr >= c->nr_blocks) {  in jffs2_mark_node_obsolete()
304 	jeb = &c->blocks[blocknr];  in jffs2_mark_node_obsolete()
311 	spin_lock_bh(&c->erase_completion_lock);  in jffs2_mark_node_obsolete()
314 	c->used_size -= ref->totlen;  in jffs2_mark_node_obsolete()
315 	c->dirty_size += ref->totlen;  in jffs2_mark_node_obsolete()
318 	ACCT_SANITY_CHECK(c, jeb);  in jffs2_mark_node_obsolete()
322 	if (c->flags & JFFS2_SB_FLAG_MOUNTING) {  in jffs2_mark_node_obsolete()
328 		spin_unlock_bh(&c->erase_completion_lock);  in jffs2_mark_node_obsolete()
331 	if (jeb == c->nextblock) {  in jffs2_mark_node_obsolete()
333 	} else if (jeb == c->gcblock) {  in jffs2_mark_node_obsolete()
345 		list_add_tail(&jeb->list, &c->erase_pending_list);  in jffs2_mark_node_obsolete()
346 		c->nr_erasing_blocks++;  in jffs2_mark_node_obsolete()
347 		jffs2_erase_pending_trigger(c);  in jffs2_mark_node_obsolete()
355 		list_add_tail(&jeb->list, &c->dirty_list);  in jffs2_mark_node_obsolete()
357 	spin_unlock_bh(&c->erase_completion_lock);  in jffs2_mark_node_obsolete()
359 	if (c->mtd->type != MTD_NORFLASH && c->mtd->type != MTD_RAM)  in jffs2_mark_node_obsolete()
361 	if (OFNI_BS_2SFFJ(c)->s_flags & MS_RDONLY)  in jffs2_mark_node_obsolete()
365 	ret = c->mtd->read(c->mtd, ref->flash_offset &~3, sizeof(n), &retlen, (char *)&n);  in jffs2_mark_node_obsolete()
383 	ret = c->mtd->write(c->mtd, ref->flash_offset&~3, sizeof(n), &retlen, (char *)&n);  in jffs2_mark_node_obsolete()