193 static void btrfs_kobject_uevent(struct block_device *bdev,  in btrfs_kobject_uevent()  argument
198 	ret = kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, action);  in btrfs_kobject_uevent()
202 			kobject_name(&disk_to_dev(bdev->bd_disk)->kobj),  in btrfs_kobject_uevent()
203 			&disk_to_dev(bdev->bd_disk)->kobj);  in btrfs_kobject_uevent()
269 		      int flush, struct block_device **bdev,  in btrfs_get_bdev_and_sb()  argument
274 	*bdev = blkdev_get_by_path(device_path, flags, holder);  in btrfs_get_bdev_and_sb()
276 	if (IS_ERR(*bdev)) {  in btrfs_get_bdev_and_sb()
277 		ret = PTR_ERR(*bdev);  in btrfs_get_bdev_and_sb()
282 		filemap_write_and_wait((*bdev)->bd_inode->i_mapping);  in btrfs_get_bdev_and_sb()
283 	ret = set_blocksize(*bdev, 4096);  in btrfs_get_bdev_and_sb()
285 		blkdev_put(*bdev, flags);  in btrfs_get_bdev_and_sb()
288 	invalidate_bdev(*bdev);  in btrfs_get_bdev_and_sb()
289 	*bh = btrfs_read_dev_super(*bdev);  in btrfs_get_bdev_and_sb()
292 		blkdev_put(*bdev, flags);  in btrfs_get_bdev_and_sb()
299 	*bdev = NULL;  in btrfs_get_bdev_and_sb()
354 	bdi = blk_get_backing_dev_info(device->bdev);  in run_scheduled_bios()
788 		if (device->bdev) {  in btrfs_close_extra_devices()
789 			blkdev_put(device->bdev, device->mode);  in btrfs_close_extra_devices()
790 			device->bdev = NULL;  in btrfs_close_extra_devices()
810 	fs_devices->latest_bdev = latest_dev->bdev;  in btrfs_close_extra_devices()
821 	if (device->bdev)  in __free_device()
822 		blkdev_put(device->bdev, device->mode);  in __free_device()
891 	struct block_device *bdev;  in __btrfs_open_devices()  local
904 		if (device->bdev)  in __btrfs_open_devices()
911 					    &bdev, &bh))  in __btrfs_open_devices()
931 			device->writeable = !bdev_read_only(bdev);  in __btrfs_open_devices()
935 		q = bdev_get_queue(bdev);  in __btrfs_open_devices()
939 		device->bdev = bdev;  in __btrfs_open_devices()
943 		if (!blk_queue_nonrot(bdev_get_queue(bdev)))  in __btrfs_open_devices()
958 		blkdev_put(bdev, flags);  in __btrfs_open_devices()
967 	fs_devices->latest_bdev = latest_dev->bdev;  in __btrfs_open_devices()
998 	struct block_device *bdev;  in btrfs_scan_one_device()  local
1018 	bdev = blkdev_get_by_path(path, flags, holder);  in btrfs_scan_one_device()
1020 	if (IS_ERR(bdev)) {  in btrfs_scan_one_device()
1021 		ret = PTR_ERR(bdev);  in btrfs_scan_one_device()
1026 	if (bytenr + PAGE_CACHE_SIZE >= i_size_read(bdev->bd_inode))  in btrfs_scan_one_device()
1039 	page = read_cache_page_gfp(bdev->bd_inode->i_mapping,  in btrfs_scan_one_device()
1079 	blkdev_put(bdev, flags);  in btrfs_scan_one_device()
1186 		map = (struct map_lookup *)em->bdev;  in contains_pending_extent()
1694 	struct block_device *bdev;  in btrfs_rm_device()  local
1758 			    !tmp->bdev) {  in btrfs_rm_device()
1763 		bdev = NULL;  in btrfs_rm_device()
1774 					    &bdev, &bh);  in btrfs_rm_device()
1846 	if (device->bdev == root->fs_info->sb->s_bdev)  in btrfs_rm_device()
1847 		root->fs_info->sb->s_bdev = next_device->bdev;  in btrfs_rm_device()
1848 	if (device->bdev == root->fs_info->fs_devices->latest_bdev)  in btrfs_rm_device()
1849 		root->fs_info->fs_devices->latest_bdev = next_device->bdev;  in btrfs_rm_device()
1851 	if (device->bdev) {  in btrfs_rm_device()
1903 					i_size_read(bdev->bd_inode))  in btrfs_rm_device()
1907 			bh = __bread(bdev, bytenr / 4096,  in btrfs_rm_device()
1927 	if (bdev) {  in btrfs_rm_device()
1929 		btrfs_kobject_uevent(bdev, KOBJ_CHANGE);  in btrfs_rm_device()
1937 	if (bdev)  in btrfs_rm_device()
1938 		blkdev_put(bdev, FMODE_READ | FMODE_EXCL);  in btrfs_rm_device()
1977 		btrfs_scratch_superblocks(srcdev->bdev, srcdev->name->str);  in btrfs_rm_dev_replace_remove_srcdev()
1980 	if (srcdev->bdev)  in btrfs_rm_dev_replace_remove_srcdev()
2026 	if (tgtdev->bdev) {  in btrfs_destroy_dev_replace_tgtdev()
2027 		btrfs_scratch_superblocks(tgtdev->bdev, tgtdev->name->str);  in btrfs_destroy_dev_replace_tgtdev()
2034 	if (tgtdev->bdev == fs_info->sb->s_bdev)  in btrfs_destroy_dev_replace_tgtdev()
2035 		fs_info->sb->s_bdev = next_device->bdev;  in btrfs_destroy_dev_replace_tgtdev()
2036 	if (tgtdev->bdev == fs_info->fs_devices->latest_bdev)  in btrfs_destroy_dev_replace_tgtdev()
2037 		fs_info->fs_devices->latest_bdev = next_device->bdev;  in btrfs_destroy_dev_replace_tgtdev()
2053 	struct block_device *bdev;  in btrfs_find_device_by_path()  local
2058 				    root->fs_info->bdev_holder, 0, &bdev, &bh);  in btrfs_find_device_by_path()
2069 	blkdev_put(bdev, FMODE_READ);  in btrfs_find_device_by_path()
2088 			if (tmp->in_fs_metadata && !tmp->bdev) {  in btrfs_find_device_missing_or_by_path()
2246 	struct block_device *bdev;  in btrfs_init_new_device()  local
2257 	bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,  in btrfs_init_new_device()
2259 	if (IS_ERR(bdev))  in btrfs_init_new_device()
2260 		return PTR_ERR(bdev);  in btrfs_init_new_device()
2268 	filemap_write_and_wait(bdev->bd_inode->i_mapping);  in btrfs_init_new_device()
2274 		if (device->bdev == bdev) {  in btrfs_init_new_device()
2306 	q = bdev_get_queue(bdev);  in btrfs_init_new_device()
2314 	device->total_bytes = i_size_read(bdev->bd_inode);  in btrfs_init_new_device()
2318 	device->bdev = bdev;  in btrfs_init_new_device()
2323 	set_blocksize(device->bdev, 4096);  in btrfs_init_new_device()
2348 	if (!blk_queue_nonrot(bdev_get_queue(bdev)))  in btrfs_init_new_device()
2443 	blkdev_put(bdev, FMODE_EXCL);  in btrfs_init_new_device()
2457 	struct block_device *bdev;  in btrfs_init_dev_replace_tgtdev()  local
2470 	bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,  in btrfs_init_dev_replace_tgtdev()
2472 	if (IS_ERR(bdev)) {  in btrfs_init_dev_replace_tgtdev()
2474 		return PTR_ERR(bdev);  in btrfs_init_dev_replace_tgtdev()
2477 	filemap_write_and_wait(bdev->bd_inode->i_mapping);  in btrfs_init_dev_replace_tgtdev()
2481 		if (device->bdev == bdev) {  in btrfs_init_dev_replace_tgtdev()
2489 	if (i_size_read(bdev->bd_inode) <  in btrfs_init_dev_replace_tgtdev()
2511 	q = bdev_get_queue(bdev);  in btrfs_init_dev_replace_tgtdev()
2527 	device->bdev = bdev;  in btrfs_init_dev_replace_tgtdev()
2532 	set_blocksize(device->bdev, 4096);  in btrfs_init_dev_replace_tgtdev()
2543 	blkdev_put(bdev, FMODE_EXCL);  in btrfs_init_dev_replace_tgtdev()
2759 	map = (struct map_lookup *)em->bdev;  in btrfs_remove_chunk()
4723 	em->bdev = (struct block_device *)map;  in __btrfs_alloc_chunk()
4818 	map = (struct map_lookup *)em->bdev;  in btrfs_finish_chunk_alloc()
4960 	map = (struct map_lookup *)em->bdev;  in btrfs_chunk_readonly()
5040 	map = (struct map_lookup *)em->bdev;  in btrfs_num_copies()
5076 	map = (struct map_lookup *)em->bdev;  in btrfs_full_stripe_len()
5097 	map = (struct map_lookup *)em->bdev;  in btrfs_is_parity_mirror()
5125 		if (map->stripes[optimal].dev->bdev &&  in find_live_mirror()
5129 			if (map->stripes[i].dev->bdev &&  in find_live_mirror()
5256 	map = (struct map_lookup *)em->bdev;  in __btrfs_map_block()
5798 	map = (struct map_lookup *)em->bdev;  in btrfs_rmap_block()
5877 			if (dev->bdev) {  in btrfs_end_bio()
5937 	if (device->missing || !device->bdev) {  in btrfs_schedule_bio()
6001 			 (u64)bio->bi_iter.bi_sector, (u_long)dev->bdev->bd_dev,  in submit_stripe_bio()
6006 	bio->bi_bdev = dev->bdev;  in submit_stripe_bio()
6083 		if (!dev || !dev->bdev || (rw & WRITE && !dev->writeable)) {  in btrfs_map_bio()
6234 	em->bdev = (struct block_device *)map;  in read_one_chunk()
6396 		if (!device->bdev && !btrfs_test_opt(root, DEGRADED))  in read_one_dev()
6399 		if(!device->bdev && !device->missing) {  in read_one_dev()
6865 void btrfs_scratch_superblocks(struct block_device *bdev, char *device_path)  in btrfs_scratch_superblocks()  argument
6871 	if (!bdev)  in btrfs_scratch_superblocks()
6877 		if (btrfs_read_dev_one_super(bdev, copy_num, &bh))  in btrfs_scratch_superblocks()
6889 	btrfs_kobject_uevent(bdev, KOBJ_CHANGE);  in btrfs_scratch_superblocks()
6933 		map = (struct map_lookup *)em->bdev;  in btrfs_update_commit_device_bytes_used()
6967 	if (device->bdev)  in btrfs_close_one_device()