Lines Matching refs:lo
111 static int loop_global_lock_killable(struct loop_device *lo, bool global) in loop_global_lock_killable() argument
120 err = mutex_lock_killable(&lo->lo_mutex); in loop_global_lock_killable()
132 static void loop_global_unlock(struct loop_device *lo, bool global) in loop_global_unlock() argument
134 mutex_unlock(&lo->lo_mutex); in loop_global_unlock()
163 static loff_t get_loop_size(struct loop_device *lo, struct file *file) in get_loop_size() argument
165 return get_size(lo->lo_offset, lo->lo_sizelimit, file); in get_loop_size()
173 static bool lo_bdev_can_use_dio(struct loop_device *lo, in lo_bdev_can_use_dio() argument
178 if (queue_logical_block_size(lo->lo_queue) < sb_bsize) in lo_bdev_can_use_dio()
180 if (lo->lo_offset & (sb_bsize - 1)) in lo_bdev_can_use_dio()
185 static void __loop_update_dio(struct loop_device *lo, bool dio) in __loop_update_dio() argument
187 struct file *file = lo->lo_backing_file; in __loop_update_dio()
198 (!backing_bdev || lo_bdev_can_use_dio(lo, backing_bdev)); in __loop_update_dio()
200 if (lo->use_dio == use_dio) in __loop_update_dio()
211 if (lo->lo_state == Lo_bound) in __loop_update_dio()
212 blk_mq_freeze_queue(lo->lo_queue); in __loop_update_dio()
213 lo->use_dio = use_dio; in __loop_update_dio()
215 lo->lo_flags |= LO_FLAGS_DIRECT_IO; in __loop_update_dio()
217 lo->lo_flags &= ~LO_FLAGS_DIRECT_IO; in __loop_update_dio()
218 if (lo->lo_state == Lo_bound) in __loop_update_dio()
219 blk_mq_unfreeze_queue(lo->lo_queue); in __loop_update_dio()
230 static void loop_set_size(struct loop_device *lo, loff_t size) in loop_set_size() argument
232 if (!set_capacity_and_notify(lo->lo_disk, size)) in loop_set_size()
233 kobject_uevent(&disk_to_dev(lo->lo_disk)->kobj, KOBJ_CHANGE); in loop_set_size()
258 static int lo_write_simple(struct loop_device *lo, struct request *rq, in lo_write_simple() argument
266 ret = lo_write_bvec(lo->lo_backing_file, &bvec, &pos); in lo_write_simple()
275 static int lo_read_simple(struct loop_device *lo, struct request *rq, in lo_read_simple() argument
285 len = vfs_iter_read(lo->lo_backing_file, &i, &pos, 0); in lo_read_simple()
304 static int lo_fallocate(struct loop_device *lo, struct request *rq, loff_t pos, in lo_fallocate() argument
311 struct file *file = lo->lo_backing_file; in lo_fallocate()
316 if (!bdev_max_discard_sectors(lo->lo_device)) in lo_fallocate()
325 static int lo_req_flush(struct loop_device *lo, struct request *rq) in lo_req_flush() argument
327 int ret = vfs_fsync(lo->lo_backing_file, 0); in lo_req_flush()
389 static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd, in lo_rw_aio() argument
397 struct file *file = lo->lo_backing_file; in lo_rw_aio()
458 static int do_req_filebacked(struct loop_device *lo, struct request *rq) in do_req_filebacked() argument
461 loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset; in do_req_filebacked()
474 return lo_req_flush(lo, rq); in do_req_filebacked()
480 return lo_fallocate(lo, rq, pos, in do_req_filebacked()
485 return lo_fallocate(lo, rq, pos, FALLOC_FL_PUNCH_HOLE); in do_req_filebacked()
488 return lo_rw_aio(lo, cmd, pos, ITER_SOURCE); in do_req_filebacked()
490 return lo_write_simple(lo, rq, pos); in do_req_filebacked()
493 return lo_rw_aio(lo, cmd, pos, ITER_DEST); in do_req_filebacked()
495 return lo_read_simple(lo, rq, pos); in do_req_filebacked()
502 static inline void loop_update_dio(struct loop_device *lo) in loop_update_dio() argument
504 __loop_update_dio(lo, (lo->lo_backing_file->f_flags & O_DIRECT) | in loop_update_dio()
505 lo->use_dio); in loop_update_dio()
508 static void loop_reread_partitions(struct loop_device *lo) in loop_reread_partitions() argument
512 mutex_lock(&lo->lo_disk->open_mutex); in loop_reread_partitions()
513 rc = bdev_disk_changed(lo->lo_disk, false); in loop_reread_partitions()
514 mutex_unlock(&lo->lo_disk->open_mutex); in loop_reread_partitions()
517 __func__, lo->lo_number, lo->lo_file_name, rc); in loop_reread_partitions()
560 static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, in loop_change_fd() argument
573 dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 1); in loop_change_fd()
576 error = loop_global_lock_killable(lo, is_loop); in loop_change_fd()
580 if (lo->lo_state != Lo_bound) in loop_change_fd()
585 if (!(lo->lo_flags & LO_FLAGS_READ_ONLY)) in loop_change_fd()
592 old_file = lo->lo_backing_file; in loop_change_fd()
597 if (get_loop_size(lo, file) != get_loop_size(lo, old_file)) in loop_change_fd()
601 disk_force_media_change(lo->lo_disk); in loop_change_fd()
602 blk_mq_freeze_queue(lo->lo_queue); in loop_change_fd()
603 mapping_set_gfp_mask(old_file->f_mapping, lo->old_gfp_mask); in loop_change_fd()
604 lo->lo_backing_file = file; in loop_change_fd()
605 lo->old_gfp_mask = mapping_gfp_mask(file->f_mapping); in loop_change_fd()
607 lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS)); in loop_change_fd()
608 loop_update_dio(lo); in loop_change_fd()
609 blk_mq_unfreeze_queue(lo->lo_queue); in loop_change_fd()
610 partscan = lo->lo_flags & LO_FLAGS_PARTSCAN; in loop_change_fd()
611 loop_global_unlock(lo, is_loop); in loop_change_fd()
628 loop_reread_partitions(lo); in loop_change_fd()
633 dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 0); in loop_change_fd()
637 loop_global_unlock(lo, is_loop); in loop_change_fd()
649 struct loop_device *lo = disk->private_data; in loop_attr_show() local
651 return callback(lo, page); in loop_attr_show()
664 static ssize_t loop_attr_backing_file_show(struct loop_device *lo, char *buf) in loop_attr_backing_file_show() argument
669 spin_lock_irq(&lo->lo_lock); in loop_attr_backing_file_show()
670 if (lo->lo_backing_file) in loop_attr_backing_file_show()
671 p = file_path(lo->lo_backing_file, buf, PAGE_SIZE - 1); in loop_attr_backing_file_show()
672 spin_unlock_irq(&lo->lo_lock); in loop_attr_backing_file_show()
686 static ssize_t loop_attr_offset_show(struct loop_device *lo, char *buf) in loop_attr_offset_show() argument
688 return sysfs_emit(buf, "%llu\n", (unsigned long long)lo->lo_offset); in loop_attr_offset_show()
691 static ssize_t loop_attr_sizelimit_show(struct loop_device *lo, char *buf) in loop_attr_sizelimit_show() argument
693 return sysfs_emit(buf, "%llu\n", (unsigned long long)lo->lo_sizelimit); in loop_attr_sizelimit_show()
696 static ssize_t loop_attr_autoclear_show(struct loop_device *lo, char *buf) in loop_attr_autoclear_show() argument
698 int autoclear = (lo->lo_flags & LO_FLAGS_AUTOCLEAR); in loop_attr_autoclear_show()
703 static ssize_t loop_attr_partscan_show(struct loop_device *lo, char *buf) in loop_attr_partscan_show() argument
705 int partscan = (lo->lo_flags & LO_FLAGS_PARTSCAN); in loop_attr_partscan_show()
710 static ssize_t loop_attr_dio_show(struct loop_device *lo, char *buf) in loop_attr_dio_show() argument
712 int dio = (lo->lo_flags & LO_FLAGS_DIRECT_IO); in loop_attr_dio_show()
739 static void loop_sysfs_init(struct loop_device *lo) in loop_sysfs_init() argument
741 lo->sysfs_inited = !sysfs_create_group(&disk_to_dev(lo->lo_disk)->kobj, in loop_sysfs_init()
745 static void loop_sysfs_exit(struct loop_device *lo) in loop_sysfs_exit() argument
747 if (lo->sysfs_inited) in loop_sysfs_exit()
748 sysfs_remove_group(&disk_to_dev(lo->lo_disk)->kobj, in loop_sysfs_exit()
752 static void loop_config_discard(struct loop_device *lo) in loop_config_discard() argument
754 struct file *file = lo->lo_backing_file; in loop_config_discard()
756 struct request_queue *q = lo->lo_queue; in loop_config_discard()
807 struct loop_device *lo; member
826 static void loop_queue_work(struct loop_device *lo, struct loop_cmd *cmd) in loop_queue_work() argument
833 spin_lock_irq(&lo->lo_work_lock); in loop_queue_work()
838 node = &lo->worker_tree.rb_node; in loop_queue_work()
873 worker->lo = lo; in loop_queue_work()
875 rb_insert_color(&worker->rb_node, &lo->worker_tree); in loop_queue_work()
888 work = &lo->rootcg_work; in loop_queue_work()
889 cmd_list = &lo->rootcg_cmd_list; in loop_queue_work()
892 queue_work(lo->workqueue, work); in loop_queue_work()
893 spin_unlock_irq(&lo->lo_work_lock); in loop_queue_work()
896 static void loop_set_timer(struct loop_device *lo) in loop_set_timer() argument
898 timer_reduce(&lo->timer, jiffies + LOOP_IDLE_WORKER_TIMEOUT); in loop_set_timer()
901 static void loop_free_idle_workers(struct loop_device *lo, bool delete_all) in loop_free_idle_workers() argument
905 spin_lock_irq(&lo->lo_work_lock); in loop_free_idle_workers()
906 list_for_each_entry_safe(worker, pos, &lo->idle_worker_list, in loop_free_idle_workers()
913 rb_erase(&worker->rb_node, &lo->worker_tree); in loop_free_idle_workers()
917 if (!list_empty(&lo->idle_worker_list)) in loop_free_idle_workers()
918 loop_set_timer(lo); in loop_free_idle_workers()
919 spin_unlock_irq(&lo->lo_work_lock); in loop_free_idle_workers()
924 struct loop_device *lo = container_of(timer, struct loop_device, timer); in loop_free_idle_workers_timer() local
926 return loop_free_idle_workers(lo, false); in loop_free_idle_workers_timer()
929 static void loop_update_rotational(struct loop_device *lo) in loop_update_rotational() argument
931 struct file *file = lo->lo_backing_file; in loop_update_rotational()
934 struct request_queue *q = lo->lo_queue; in loop_update_rotational()
956 loop_set_status_from_info(struct loop_device *lo, in loop_set_status_from_info() argument
979 lo->lo_offset = info->lo_offset; in loop_set_status_from_info()
980 lo->lo_sizelimit = info->lo_sizelimit; in loop_set_status_from_info()
982 memcpy(lo->lo_file_name, info->lo_file_name, LO_NAME_SIZE); in loop_set_status_from_info()
983 lo->lo_file_name[LO_NAME_SIZE-1] = 0; in loop_set_status_from_info()
984 lo->lo_flags = info->lo_flags; in loop_set_status_from_info()
988 static int loop_configure(struct loop_device *lo, blk_mode_t mode, in loop_configure() argument
1018 error = loop_global_lock_killable(lo, is_loop); in loop_configure()
1023 if (lo->lo_state != Lo_unbound) in loop_configure()
1044 error = loop_set_status_from_info(lo, &config->info); in loop_configure()
1050 lo->lo_flags |= LO_FLAGS_READ_ONLY; in loop_configure()
1052 if (!lo->workqueue) { in loop_configure()
1053 lo->workqueue = alloc_workqueue("loop%d", in loop_configure()
1055 0, lo->lo_number); in loop_configure()
1056 if (!lo->workqueue) { in loop_configure()
1063 dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 1); in loop_configure()
1065 disk_force_media_change(lo->lo_disk); in loop_configure()
1066 set_disk_ro(lo->lo_disk, (lo->lo_flags & LO_FLAGS_READ_ONLY) != 0); in loop_configure()
1068 lo->use_dio = lo->lo_flags & LO_FLAGS_DIRECT_IO; in loop_configure()
1069 lo->lo_device = bdev; in loop_configure()
1070 lo->lo_backing_file = file; in loop_configure()
1071 lo->old_gfp_mask = mapping_gfp_mask(mapping); in loop_configure()
1072 mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS)); in loop_configure()
1074 if (!(lo->lo_flags & LO_FLAGS_READ_ONLY) && file->f_op->fsync) in loop_configure()
1075 blk_queue_write_cache(lo->lo_queue, true, false); in loop_configure()
1079 else if ((lo->lo_backing_file->f_flags & O_DIRECT) && inode->i_sb->s_bdev) in loop_configure()
1085 blk_queue_logical_block_size(lo->lo_queue, bsize); in loop_configure()
1086 blk_queue_physical_block_size(lo->lo_queue, bsize); in loop_configure()
1087 blk_queue_io_min(lo->lo_queue, bsize); in loop_configure()
1089 loop_config_discard(lo); in loop_configure()
1090 loop_update_rotational(lo); in loop_configure()
1091 loop_update_dio(lo); in loop_configure()
1092 loop_sysfs_init(lo); in loop_configure()
1094 size = get_loop_size(lo, file); in loop_configure()
1095 loop_set_size(lo, size); in loop_configure()
1100 lo->lo_state = Lo_bound; in loop_configure()
1102 lo->lo_flags |= LO_FLAGS_PARTSCAN; in loop_configure()
1103 partscan = lo->lo_flags & LO_FLAGS_PARTSCAN; in loop_configure()
1105 clear_bit(GD_SUPPRESS_PART_SCAN, &lo->lo_disk->state); in loop_configure()
1108 dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 0); in loop_configure()
1110 loop_global_unlock(lo, is_loop); in loop_configure()
1112 loop_reread_partitions(lo); in loop_configure()
1120 loop_global_unlock(lo, is_loop); in loop_configure()
1131 static void __loop_clr_fd(struct loop_device *lo, bool release) in __loop_clr_fd() argument
1134 gfp_t gfp = lo->old_gfp_mask; in __loop_clr_fd()
1136 if (test_bit(QUEUE_FLAG_WC, &lo->lo_queue->queue_flags)) in __loop_clr_fd()
1137 blk_queue_write_cache(lo->lo_queue, false, false); in __loop_clr_fd()
1145 blk_mq_freeze_queue(lo->lo_queue); in __loop_clr_fd()
1147 spin_lock_irq(&lo->lo_lock); in __loop_clr_fd()
1148 filp = lo->lo_backing_file; in __loop_clr_fd()
1149 lo->lo_backing_file = NULL; in __loop_clr_fd()
1150 spin_unlock_irq(&lo->lo_lock); in __loop_clr_fd()
1152 lo->lo_device = NULL; in __loop_clr_fd()
1153 lo->lo_offset = 0; in __loop_clr_fd()
1154 lo->lo_sizelimit = 0; in __loop_clr_fd()
1155 memset(lo->lo_file_name, 0, LO_NAME_SIZE); in __loop_clr_fd()
1156 blk_queue_logical_block_size(lo->lo_queue, 512); in __loop_clr_fd()
1157 blk_queue_physical_block_size(lo->lo_queue, 512); in __loop_clr_fd()
1158 blk_queue_io_min(lo->lo_queue, 512); in __loop_clr_fd()
1159 invalidate_disk(lo->lo_disk); in __loop_clr_fd()
1160 loop_sysfs_exit(lo); in __loop_clr_fd()
1162 kobject_uevent(&disk_to_dev(lo->lo_disk)->kobj, KOBJ_CHANGE); in __loop_clr_fd()
1167 blk_mq_unfreeze_queue(lo->lo_queue); in __loop_clr_fd()
1169 disk_force_media_change(lo->lo_disk); in __loop_clr_fd()
1171 if (lo->lo_flags & LO_FLAGS_PARTSCAN) { in __loop_clr_fd()
1183 mutex_lock(&lo->lo_disk->open_mutex); in __loop_clr_fd()
1184 err = bdev_disk_changed(lo->lo_disk, false); in __loop_clr_fd()
1186 mutex_unlock(&lo->lo_disk->open_mutex); in __loop_clr_fd()
1189 __func__, lo->lo_number, err); in __loop_clr_fd()
1199 lo->lo_flags = 0; in __loop_clr_fd()
1201 set_bit(GD_SUPPRESS_PART_SCAN, &lo->lo_disk->state); in __loop_clr_fd()
1202 mutex_lock(&lo->lo_mutex); in __loop_clr_fd()
1203 lo->lo_state = Lo_unbound; in __loop_clr_fd()
1204 mutex_unlock(&lo->lo_mutex); in __loop_clr_fd()
1214 static int loop_clr_fd(struct loop_device *lo) in loop_clr_fd() argument
1227 err = loop_global_lock_killable(lo, true); in loop_clr_fd()
1230 if (lo->lo_state != Lo_bound) { in loop_clr_fd()
1231 loop_global_unlock(lo, true); in loop_clr_fd()
1244 if (disk_openers(lo->lo_disk) > 1) { in loop_clr_fd()
1245 lo->lo_flags |= LO_FLAGS_AUTOCLEAR; in loop_clr_fd()
1246 loop_global_unlock(lo, true); in loop_clr_fd()
1249 lo->lo_state = Lo_rundown; in loop_clr_fd()
1250 loop_global_unlock(lo, true); in loop_clr_fd()
1252 __loop_clr_fd(lo, false); in loop_clr_fd()
1257 loop_set_status(struct loop_device *lo, const struct loop_info64 *info) in loop_set_status() argument
1264 err = mutex_lock_killable(&lo->lo_mutex); in loop_set_status()
1267 if (lo->lo_state != Lo_bound) { in loop_set_status()
1272 if (lo->lo_offset != info->lo_offset || in loop_set_status()
1273 lo->lo_sizelimit != info->lo_sizelimit) { in loop_set_status()
1275 sync_blockdev(lo->lo_device); in loop_set_status()
1276 invalidate_bdev(lo->lo_device); in loop_set_status()
1280 blk_mq_freeze_queue(lo->lo_queue); in loop_set_status()
1282 prev_lo_flags = lo->lo_flags; in loop_set_status()
1284 err = loop_set_status_from_info(lo, info); in loop_set_status()
1289 lo->lo_flags &= LOOP_SET_STATUS_SETTABLE_FLAGS; in loop_set_status()
1291 lo->lo_flags |= prev_lo_flags & ~LOOP_SET_STATUS_SETTABLE_FLAGS; in loop_set_status()
1293 lo->lo_flags |= prev_lo_flags & ~LOOP_SET_STATUS_CLEARABLE_FLAGS; in loop_set_status()
1296 loff_t new_size = get_size(lo->lo_offset, lo->lo_sizelimit, in loop_set_status()
1297 lo->lo_backing_file); in loop_set_status()
1298 loop_set_size(lo, new_size); in loop_set_status()
1301 loop_config_discard(lo); in loop_set_status()
1304 __loop_update_dio(lo, lo->use_dio); in loop_set_status()
1307 blk_mq_unfreeze_queue(lo->lo_queue); in loop_set_status()
1309 if (!err && (lo->lo_flags & LO_FLAGS_PARTSCAN) && in loop_set_status()
1311 clear_bit(GD_SUPPRESS_PART_SCAN, &lo->lo_disk->state); in loop_set_status()
1315 mutex_unlock(&lo->lo_mutex); in loop_set_status()
1317 loop_reread_partitions(lo); in loop_set_status()
1323 loop_get_status(struct loop_device *lo, struct loop_info64 *info) in loop_get_status() argument
1329 ret = mutex_lock_killable(&lo->lo_mutex); in loop_get_status()
1332 if (lo->lo_state != Lo_bound) { in loop_get_status()
1333 mutex_unlock(&lo->lo_mutex); in loop_get_status()
1338 info->lo_number = lo->lo_number; in loop_get_status()
1339 info->lo_offset = lo->lo_offset; in loop_get_status()
1340 info->lo_sizelimit = lo->lo_sizelimit; in loop_get_status()
1341 info->lo_flags = lo->lo_flags; in loop_get_status()
1342 memcpy(info->lo_file_name, lo->lo_file_name, LO_NAME_SIZE); in loop_get_status()
1345 path = lo->lo_backing_file->f_path; in loop_get_status()
1347 mutex_unlock(&lo->lo_mutex); in loop_get_status()
1395 loop_set_status_old(struct loop_device *lo, const struct loop_info __user *arg) in loop_set_status_old() argument
1403 return loop_set_status(lo, &info64); in loop_set_status_old()
1407 loop_set_status64(struct loop_device *lo, const struct loop_info64 __user *arg) in loop_set_status64() argument
1413 return loop_set_status(lo, &info64); in loop_set_status64()
1417 loop_get_status_old(struct loop_device *lo, struct loop_info __user *arg) { in loop_get_status_old() argument
1424 err = loop_get_status(lo, &info64); in loop_get_status_old()
1434 loop_get_status64(struct loop_device *lo, struct loop_info64 __user *arg) { in loop_get_status64() argument
1440 err = loop_get_status(lo, &info64); in loop_get_status64()
1447 static int loop_set_capacity(struct loop_device *lo) in loop_set_capacity() argument
1451 if (unlikely(lo->lo_state != Lo_bound)) in loop_set_capacity()
1454 size = get_loop_size(lo, lo->lo_backing_file); in loop_set_capacity()
1455 loop_set_size(lo, size); in loop_set_capacity()
1460 static int loop_set_dio(struct loop_device *lo, unsigned long arg) in loop_set_dio() argument
1463 if (lo->lo_state != Lo_bound) in loop_set_dio()
1466 __loop_update_dio(lo, !!arg); in loop_set_dio()
1467 if (lo->use_dio == !!arg) in loop_set_dio()
1474 static int loop_set_block_size(struct loop_device *lo, unsigned long arg) in loop_set_block_size() argument
1478 if (lo->lo_state != Lo_bound) in loop_set_block_size()
1485 if (lo->lo_queue->limits.logical_block_size == arg) in loop_set_block_size()
1488 sync_blockdev(lo->lo_device); in loop_set_block_size()
1489 invalidate_bdev(lo->lo_device); in loop_set_block_size()
1491 blk_mq_freeze_queue(lo->lo_queue); in loop_set_block_size()
1492 blk_queue_logical_block_size(lo->lo_queue, arg); in loop_set_block_size()
1493 blk_queue_physical_block_size(lo->lo_queue, arg); in loop_set_block_size()
1494 blk_queue_io_min(lo->lo_queue, arg); in loop_set_block_size()
1495 loop_update_dio(lo); in loop_set_block_size()
1496 blk_mq_unfreeze_queue(lo->lo_queue); in loop_set_block_size()
1501 static int lo_simple_ioctl(struct loop_device *lo, unsigned int cmd, in lo_simple_ioctl() argument
1506 err = mutex_lock_killable(&lo->lo_mutex); in lo_simple_ioctl()
1511 err = loop_set_capacity(lo); in lo_simple_ioctl()
1514 err = loop_set_dio(lo, arg); in lo_simple_ioctl()
1517 err = loop_set_block_size(lo, arg); in lo_simple_ioctl()
1522 mutex_unlock(&lo->lo_mutex); in lo_simple_ioctl()
1529 struct loop_device *lo = bdev->bd_disk->private_data; in lo_ioctl() local
1545 return loop_configure(lo, mode, bdev, &config); in lo_ioctl()
1553 return loop_configure(lo, mode, bdev, &config); in lo_ioctl()
1556 return loop_change_fd(lo, bdev, arg); in lo_ioctl()
1558 return loop_clr_fd(lo); in lo_ioctl()
1562 err = loop_set_status_old(lo, argp); in lo_ioctl()
1565 return loop_get_status_old(lo, argp); in lo_ioctl()
1569 err = loop_set_status64(lo, argp); in lo_ioctl()
1572 return loop_get_status64(lo, argp); in lo_ioctl()
1580 err = lo_simple_ioctl(lo, cmd, arg); in lo_ioctl()
1660 loop_set_status_compat(struct loop_device *lo, in loop_set_status_compat() argument
1669 return loop_set_status(lo, &info64); in loop_set_status_compat()
1673 loop_get_status_compat(struct loop_device *lo, in loop_get_status_compat() argument
1681 err = loop_get_status(lo, &info64); in loop_get_status_compat()
1690 struct loop_device *lo = bdev->bd_disk->private_data; in lo_compat_ioctl() local
1695 err = loop_set_status_compat(lo, in lo_compat_ioctl()
1699 err = loop_get_status_compat(lo, in lo_compat_ioctl()
1725 struct loop_device *lo = disk->private_data; in lo_release() local
1730 mutex_lock(&lo->lo_mutex); in lo_release()
1731 if (lo->lo_state == Lo_bound && (lo->lo_flags & LO_FLAGS_AUTOCLEAR)) { in lo_release()
1732 lo->lo_state = Lo_rundown; in lo_release()
1733 mutex_unlock(&lo->lo_mutex); in lo_release()
1738 __loop_clr_fd(lo, true); in lo_release()
1741 mutex_unlock(&lo->lo_mutex); in lo_release()
1746 struct loop_device *lo = disk->private_data; in lo_free_disk() local
1748 if (lo->workqueue) in lo_free_disk()
1749 destroy_workqueue(lo->workqueue); in lo_free_disk()
1750 loop_free_idle_workers(lo, true); in lo_free_disk()
1751 timer_shutdown_sync(&lo->timer); in lo_free_disk()
1752 mutex_destroy(&lo->lo_mutex); in lo_free_disk()
1753 kfree(lo); in lo_free_disk()
1844 struct loop_device *lo = rq->q->queuedata; in loop_queue_rq() local
1848 if (lo->lo_state != Lo_bound) in loop_queue_rq()
1858 cmd->use_aio = lo->use_dio; in loop_queue_rq()
1877 loop_queue_work(lo, cmd); in loop_queue_rq()
1888 struct loop_device *lo = rq->q->queuedata; in loop_handle_cmd() local
1893 if (write && (lo->lo_flags & LO_FLAGS_READ_ONLY)) { in loop_handle_cmd()
1910 ret = do_req_filebacked(lo, rq); in loop_handle_cmd()
1932 struct list_head *cmd_list, struct loop_device *lo) in loop_process_work() argument
1938 spin_lock_irq(&lo->lo_work_lock); in loop_process_work()
1943 spin_unlock_irq(&lo->lo_work_lock); in loop_process_work()
1948 spin_lock_irq(&lo->lo_work_lock); in loop_process_work()
1958 list_add_tail(&worker->idle_list, &lo->idle_worker_list); in loop_process_work()
1959 loop_set_timer(lo); in loop_process_work()
1961 spin_unlock_irq(&lo->lo_work_lock); in loop_process_work()
1969 loop_process_work(worker, &worker->cmd_list, worker->lo); in loop_workfn()
1974 struct loop_device *lo = in loop_rootcg_workfn() local
1976 loop_process_work(NULL, &lo->rootcg_cmd_list, lo); in loop_rootcg_workfn()
1986 struct loop_device *lo; in loop_add() local
1991 lo = kzalloc(sizeof(*lo), GFP_KERNEL); in loop_add()
1992 if (!lo) in loop_add()
1994 lo->worker_tree = RB_ROOT; in loop_add()
1995 INIT_LIST_HEAD(&lo->idle_worker_list); in loop_add()
1996 timer_setup(&lo->timer, loop_free_idle_workers_timer, TIMER_DEFERRABLE); in loop_add()
1997 lo->lo_state = Lo_unbound; in loop_add()
2005 err = idr_alloc(&loop_index_idr, lo, i, i + 1, GFP_KERNEL); in loop_add()
2009 err = idr_alloc(&loop_index_idr, lo, 0, 0, GFP_KERNEL); in loop_add()
2016 lo->tag_set.ops = &loop_mq_ops; in loop_add()
2017 lo->tag_set.nr_hw_queues = 1; in loop_add()
2018 lo->tag_set.queue_depth = hw_queue_depth; in loop_add()
2019 lo->tag_set.numa_node = NUMA_NO_NODE; in loop_add()
2020 lo->tag_set.cmd_size = sizeof(struct loop_cmd); in loop_add()
2021 lo->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_STACKING | in loop_add()
2023 lo->tag_set.driver_data = lo; in loop_add()
2025 err = blk_mq_alloc_tag_set(&lo->tag_set); in loop_add()
2029 disk = lo->lo_disk = blk_mq_alloc_disk(&lo->tag_set, lo); in loop_add()
2034 lo->lo_queue = lo->lo_disk->queue; in loop_add()
2036 blk_queue_max_hw_sectors(lo->lo_queue, BLK_DEF_MAX_SECTORS); in loop_add()
2058 mutex_init(&lo->lo_mutex); in loop_add()
2059 lo->lo_number = i; in loop_add()
2060 spin_lock_init(&lo->lo_lock); in loop_add()
2061 spin_lock_init(&lo->lo_work_lock); in loop_add()
2062 INIT_WORK(&lo->rootcg_work, loop_rootcg_workfn); in loop_add()
2063 INIT_LIST_HEAD(&lo->rootcg_cmd_list); in loop_add()
2068 disk->private_data = lo; in loop_add()
2069 disk->queue = lo->lo_queue; in loop_add()
2080 lo->idr_visible = true; in loop_add()
2088 blk_mq_free_tag_set(&lo->tag_set); in loop_add()
2094 kfree(lo); in loop_add()
2099 static void loop_remove(struct loop_device *lo) in loop_remove() argument
2102 del_gendisk(lo->lo_disk); in loop_remove()
2103 blk_mq_free_tag_set(&lo->tag_set); in loop_remove()
2106 idr_remove(&loop_index_idr, lo->lo_number); in loop_remove()
2109 put_disk(lo->lo_disk); in loop_remove()
2127 struct loop_device *lo; in loop_control_remove() local
2139 lo = idr_find(&loop_index_idr, idx); in loop_control_remove()
2140 if (!lo || !lo->idr_visible) in loop_control_remove()
2143 lo->idr_visible = false; in loop_control_remove()
2149 ret = mutex_lock_killable(&lo->lo_mutex); in loop_control_remove()
2152 if (lo->lo_state != Lo_unbound || disk_openers(lo->lo_disk) > 0) { in loop_control_remove()
2153 mutex_unlock(&lo->lo_mutex); in loop_control_remove()
2158 lo->lo_state = Lo_deleting; in loop_control_remove()
2159 mutex_unlock(&lo->lo_mutex); in loop_control_remove()
2161 loop_remove(lo); in loop_control_remove()
2167 lo->idr_visible = true; in loop_control_remove()
2174 struct loop_device *lo; in loop_control_get_free() local
2180 idr_for_each_entry(&loop_index_idr, lo, id) { in loop_control_get_free()
2182 if (lo->idr_visible && data_race(lo->lo_state) == Lo_unbound) in loop_control_get_free()
2279 struct loop_device *lo; in loop_exit() local
2291 idr_for_each_entry(&loop_index_idr, lo, id) in loop_exit()
2292 loop_remove(lo); in loop_exit()