56 struct ext4_io_end_vec *ext4_alloc_io_end_vec(ext4_io_end_t *io_end)  in ext4_alloc_io_end_vec()  argument
64 	list_add_tail(&io_end_vec->list, &io_end->list_vec);  in ext4_alloc_io_end_vec()
68 static void ext4_free_io_end_vec(ext4_io_end_t *io_end)  in ext4_free_io_end_vec()  argument
72 	if (list_empty(&io_end->list_vec))  in ext4_free_io_end_vec()
74 	list_for_each_entry_safe(io_end_vec, tmp, &io_end->list_vec, list) {  in ext4_free_io_end_vec()
80 struct ext4_io_end_vec *ext4_last_io_end_vec(ext4_io_end_t *io_end)  in ext4_last_io_end_vec()  argument
82 	BUG_ON(list_empty(&io_end->list_vec));  in ext4_last_io_end_vec()
83 	return list_last_entry(&io_end->list_vec, struct ext4_io_end_vec, list);  in ext4_last_io_end_vec()
148 static void ext4_release_io_end(ext4_io_end_t *io_end)  in ext4_release_io_end()  argument
152 	BUG_ON(!list_empty(&io_end->list));  in ext4_release_io_end()
153 	BUG_ON(io_end->flag & EXT4_IO_END_UNWRITTEN);  in ext4_release_io_end()
154 	WARN_ON(io_end->handle);  in ext4_release_io_end()
156 	for (bio = io_end->bio; bio; bio = next_bio) {  in ext4_release_io_end()
161 	ext4_free_io_end_vec(io_end);  in ext4_release_io_end()
162 	kmem_cache_free(io_end_cachep, io_end);  in ext4_release_io_end()
173 static int ext4_end_io_end(ext4_io_end_t *io_end)  in ext4_end_io_end()  argument
175 	struct inode *inode = io_end->inode;  in ext4_end_io_end()
176 	handle_t *handle = io_end->handle;  in ext4_end_io_end()
181 		   io_end, inode->i_ino, io_end->list.next, io_end->list.prev);  in ext4_end_io_end()
183 	io_end->handle = NULL;	/* Following call will use up the handle */  in ext4_end_io_end()
184 	ret = ext4_convert_unwritten_io_end_vec(handle, io_end);  in ext4_end_io_end()
191 	ext4_clear_io_unwritten_flag(io_end);  in ext4_end_io_end()
192 	ext4_release_io_end(io_end);  in ext4_end_io_end()
200 	ext4_io_end_t *io_end, *io_end0, *io_end1;  in dump_completed_IO()  local
206 	list_for_each_entry(io_end, head, list) {  in dump_completed_IO()
207 		cur = &io_end->list;  in dump_completed_IO()
214 			    io_end, inode->i_ino, io_end0, io_end1);  in dump_completed_IO()
220 static void ext4_add_complete_io(ext4_io_end_t *io_end)  in ext4_add_complete_io()  argument
222 	struct ext4_inode_info *ei = EXT4_I(io_end->inode);  in ext4_add_complete_io()
223 	struct ext4_sb_info *sbi = EXT4_SB(io_end->inode->i_sb);  in ext4_add_complete_io()
228 	WARN_ON(!(io_end->flag & EXT4_IO_END_UNWRITTEN));  in ext4_add_complete_io()
229 	WARN_ON(!io_end->handle && sbi->s_journal);  in ext4_add_complete_io()
234 	list_add_tail(&io_end->list, &ei->i_rsv_conversion_list);  in ext4_add_complete_io()
241 	ext4_io_end_t *io_end;  in ext4_do_flush_completed_IO()  local
253 		io_end = list_entry(unwritten.next, ext4_io_end_t, list);  in ext4_do_flush_completed_IO()
254 		BUG_ON(!(io_end->flag & EXT4_IO_END_UNWRITTEN));  in ext4_do_flush_completed_IO()
255 		list_del_init(&io_end->list);  in ext4_do_flush_completed_IO()
257 		err = ext4_end_io_end(io_end);  in ext4_do_flush_completed_IO()
276 	ext4_io_end_t *io_end = kmem_cache_zalloc(io_end_cachep, flags);  in ext4_init_io_end()  local
278 	if (io_end) {  in ext4_init_io_end()
279 		io_end->inode = inode;  in ext4_init_io_end()
280 		INIT_LIST_HEAD(&io_end->list);  in ext4_init_io_end()
281 		INIT_LIST_HEAD(&io_end->list_vec);  in ext4_init_io_end()
282 		atomic_set(&io_end->count, 1);  in ext4_init_io_end()
284 	return io_end;  in ext4_init_io_end()
287 void ext4_put_io_end_defer(ext4_io_end_t *io_end)  in ext4_put_io_end_defer()  argument
289 	if (atomic_dec_and_test(&io_end->count)) {  in ext4_put_io_end_defer()
290 		if (!(io_end->flag & EXT4_IO_END_UNWRITTEN) ||  in ext4_put_io_end_defer()
291 				list_empty(&io_end->list_vec)) {  in ext4_put_io_end_defer()
292 			ext4_release_io_end(io_end);  in ext4_put_io_end_defer()
295 		ext4_add_complete_io(io_end);  in ext4_put_io_end_defer()
299 int ext4_put_io_end(ext4_io_end_t *io_end)  in ext4_put_io_end()  argument
303 	if (atomic_dec_and_test(&io_end->count)) {  in ext4_put_io_end()
304 		if (io_end->flag & EXT4_IO_END_UNWRITTEN) {  in ext4_put_io_end()
305 			err = ext4_convert_unwritten_io_end_vec(io_end->handle,  in ext4_put_io_end()
306 								io_end);  in ext4_put_io_end()
307 			io_end->handle = NULL;  in ext4_put_io_end()
308 			ext4_clear_io_unwritten_flag(io_end);  in ext4_put_io_end()
310 		ext4_release_io_end(io_end);  in ext4_put_io_end()
315 ext4_io_end_t *ext4_get_io_end(ext4_io_end_t *io_end)  in ext4_get_io_end()  argument
317 	atomic_inc(&io_end->count);  in ext4_get_io_end()
318 	return io_end;  in ext4_get_io_end()
324 	ext4_io_end_t *io_end = bio->bi_private;  in ext4_end_bio()  local
328 	if (WARN_ONCE(!io_end, "io_end is NULL: %s: sector %Lu len %u err %d\n",  in ext4_end_bio()
340 		struct inode *inode = io_end->inode;  in ext4_end_bio()
351 	if (io_end->flag & EXT4_IO_END_UNWRITTEN) {  in ext4_end_bio()
357 		bio->bi_private = xchg(&io_end->bio, bio);  in ext4_end_bio()
358 		ext4_put_io_end_defer(io_end);  in ext4_end_bio()
364 		ext4_put_io_end_defer(io_end);  in ext4_end_bio()
377 		io->io_bio->bi_write_hint = io->io_end->inode->i_write_hint;  in ext4_io_submit()
389 	io->io_end = NULL;  in ext4_io_submit_init()
406 	bio->bi_private = ext4_get_io_end(io->io_end);  in io_submit_init_bio()