113 static void btrfs_kobject_uevent(struct block_device *bdev,  in btrfs_kobject_uevent()  argument
118 	ret = kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, action);  in btrfs_kobject_uevent()
122 			kobject_name(&disk_to_dev(bdev->bd_disk)->kobj),  in btrfs_kobject_uevent()
123 			&disk_to_dev(bdev->bd_disk)->kobj);  in btrfs_kobject_uevent()
189 		      int flush, struct block_device **bdev,  in btrfs_get_bdev_and_sb()  argument
194 	*bdev = blkdev_get_by_path(device_path, flags, holder);  in btrfs_get_bdev_and_sb()
196 	if (IS_ERR(*bdev)) {  in btrfs_get_bdev_and_sb()
197 		ret = PTR_ERR(*bdev);  in btrfs_get_bdev_and_sb()
203 		filemap_write_and_wait((*bdev)->bd_inode->i_mapping);  in btrfs_get_bdev_and_sb()
204 	ret = set_blocksize(*bdev, 4096);  in btrfs_get_bdev_and_sb()
206 		blkdev_put(*bdev, flags);  in btrfs_get_bdev_and_sb()
209 	invalidate_bdev(*bdev);  in btrfs_get_bdev_and_sb()
210 	*bh = btrfs_read_dev_super(*bdev);  in btrfs_get_bdev_and_sb()
213 		blkdev_put(*bdev, flags);  in btrfs_get_bdev_and_sb()
220 	*bdev = NULL;  in btrfs_get_bdev_and_sb()
275 	bdi = blk_get_backing_dev_info(device->bdev);  in run_scheduled_bios()
645 		if (device->bdev) {  in btrfs_close_extra_devices()
646 			blkdev_put(device->bdev, device->mode);  in btrfs_close_extra_devices()
647 			device->bdev = NULL;  in btrfs_close_extra_devices()
667 	fs_devices->latest_bdev = latest_dev->bdev;  in btrfs_close_extra_devices()
678 	if (device->bdev)  in __free_device()
679 		blkdev_put(device->bdev, device->mode);  in __free_device()
707 		if (device->bdev)  in __btrfs_close_devices()
777 	struct block_device *bdev;  in __btrfs_open_devices()  local
790 		if (device->bdev)  in __btrfs_open_devices()
797 					    &bdev, &bh))  in __btrfs_open_devices()
817 			device->writeable = !bdev_read_only(bdev);  in __btrfs_open_devices()
821 		q = bdev_get_queue(bdev);  in __btrfs_open_devices()
825 		device->bdev = bdev;  in __btrfs_open_devices()
829 		if (!blk_queue_nonrot(bdev_get_queue(bdev)))  in __btrfs_open_devices()
844 		blkdev_put(bdev, flags);  in __btrfs_open_devices()
853 	fs_devices->latest_bdev = latest_dev->bdev;  in __btrfs_open_devices()
884 	struct block_device *bdev;  in btrfs_scan_one_device()  local
904 	bdev = blkdev_get_by_path(path, flags, holder);  in btrfs_scan_one_device()
906 	if (IS_ERR(bdev)) {  in btrfs_scan_one_device()
907 		ret = PTR_ERR(bdev);  in btrfs_scan_one_device()
912 	if (bytenr + PAGE_CACHE_SIZE >= i_size_read(bdev->bd_inode))  in btrfs_scan_one_device()
925 	page = read_cache_page_gfp(bdev->bd_inode->i_mapping,  in btrfs_scan_one_device()
965 	blkdev_put(bdev, flags);  in btrfs_scan_one_device()
1069 		map = (struct map_lookup *)em->bdev;  in contains_pending_extent()
1550 	struct block_device *bdev;  in btrfs_rm_device()  local
1614 			    !tmp->bdev) {  in btrfs_rm_device()
1619 		bdev = NULL;  in btrfs_rm_device()
1630 					    &bdev, &bh);  in btrfs_rm_device()
1702 	if (device->bdev == root->fs_info->sb->s_bdev)  in btrfs_rm_device()
1703 		root->fs_info->sb->s_bdev = next_device->bdev;  in btrfs_rm_device()
1704 	if (device->bdev == root->fs_info->fs_devices->latest_bdev)  in btrfs_rm_device()
1705 		root->fs_info->fs_devices->latest_bdev = next_device->bdev;  in btrfs_rm_device()
1707 	if (device->bdev) {  in btrfs_rm_device()
1759 					i_size_read(bdev->bd_inode))  in btrfs_rm_device()
1763 			bh = __bread(bdev, bytenr / 4096,  in btrfs_rm_device()
1783 	if (bdev) {  in btrfs_rm_device()
1785 		btrfs_kobject_uevent(bdev, KOBJ_CHANGE);  in btrfs_rm_device()
1793 	if (bdev)  in btrfs_rm_device()
1794 		blkdev_put(bdev, FMODE_READ | FMODE_EXCL);  in btrfs_rm_device()
1836 	if (srcdev->bdev)  in btrfs_rm_dev_replace_remove_srcdev()
1879 	if (tgtdev->bdev) {  in btrfs_destroy_dev_replace_tgtdev()
1887 	if (tgtdev->bdev == fs_info->sb->s_bdev)  in btrfs_destroy_dev_replace_tgtdev()
1888 		fs_info->sb->s_bdev = next_device->bdev;  in btrfs_destroy_dev_replace_tgtdev()
1889 	if (tgtdev->bdev == fs_info->fs_devices->latest_bdev)  in btrfs_destroy_dev_replace_tgtdev()
1890 		fs_info->fs_devices->latest_bdev = next_device->bdev;  in btrfs_destroy_dev_replace_tgtdev()
1906 	struct block_device *bdev;  in btrfs_find_device_by_path()  local
1911 				    root->fs_info->bdev_holder, 0, &bdev, &bh);  in btrfs_find_device_by_path()
1922 	blkdev_put(bdev, FMODE_READ);  in btrfs_find_device_by_path()
1941 			if (tmp->in_fs_metadata && !tmp->bdev) {  in btrfs_find_device_missing_or_by_path()
2101 	struct block_device *bdev;  in btrfs_init_new_device()  local
2112 	bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,  in btrfs_init_new_device()
2114 	if (IS_ERR(bdev))  in btrfs_init_new_device()
2115 		return PTR_ERR(bdev);  in btrfs_init_new_device()
2123 	filemap_write_and_wait(bdev->bd_inode->i_mapping);  in btrfs_init_new_device()
2129 		if (device->bdev == bdev) {  in btrfs_init_new_device()
2161 	q = bdev_get_queue(bdev);  in btrfs_init_new_device()
2169 	device->total_bytes = i_size_read(bdev->bd_inode);  in btrfs_init_new_device()
2173 	device->bdev = bdev;  in btrfs_init_new_device()
2178 	set_blocksize(device->bdev, 4096);  in btrfs_init_new_device()
2203 	if (!blk_queue_nonrot(bdev_get_queue(bdev)))  in btrfs_init_new_device()
2296 	blkdev_put(bdev, FMODE_EXCL);  in btrfs_init_new_device()
2310 	struct block_device *bdev;  in btrfs_init_dev_replace_tgtdev()  local
2323 	bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,  in btrfs_init_dev_replace_tgtdev()
2325 	if (IS_ERR(bdev)) {  in btrfs_init_dev_replace_tgtdev()
2327 		return PTR_ERR(bdev);  in btrfs_init_dev_replace_tgtdev()
2330 	filemap_write_and_wait(bdev->bd_inode->i_mapping);  in btrfs_init_dev_replace_tgtdev()
2334 		if (device->bdev == bdev) {  in btrfs_init_dev_replace_tgtdev()
2342 	if (i_size_read(bdev->bd_inode) <  in btrfs_init_dev_replace_tgtdev()
2364 	q = bdev_get_queue(bdev);  in btrfs_init_dev_replace_tgtdev()
2380 	device->bdev = bdev;  in btrfs_init_dev_replace_tgtdev()
2385 	set_blocksize(device->bdev, 4096);  in btrfs_init_dev_replace_tgtdev()
2396 	blkdev_put(bdev, FMODE_EXCL);  in btrfs_init_dev_replace_tgtdev()
2612 	map = (struct map_lookup *)em->bdev;  in btrfs_remove_chunk()
4455 	em->bdev = (struct block_device *)map;  in __btrfs_alloc_chunk()
4550 	map = (struct map_lookup *)em->bdev;  in btrfs_finish_chunk_alloc()
4692 	map = (struct map_lookup *)em->bdev;  in btrfs_chunk_readonly()
4772 	map = (struct map_lookup *)em->bdev;  in btrfs_num_copies()
4808 	map = (struct map_lookup *)em->bdev;  in btrfs_full_stripe_len()
4829 	map = (struct map_lookup *)em->bdev;  in btrfs_is_parity_mirror()
4857 		if (map->stripes[optimal].dev->bdev &&  in find_live_mirror()
4861 			if (map->stripes[i].dev->bdev &&  in find_live_mirror()
4990 	map = (struct map_lookup *)em->bdev;  in __btrfs_map_block()
5532 	map = (struct map_lookup *)em->bdev;  in btrfs_rmap_block()
5611 			if (dev->bdev) {  in btrfs_end_bio()
5674 	if (device->missing || !device->bdev) {  in btrfs_schedule_bio()
5720 static int bio_size_ok(struct block_device *bdev, struct bio *bio,  in bio_size_ok()  argument
5724 	struct request_queue *q = bdev_get_queue(bdev);  in bio_size_ok()
5727 		.bi_bdev = bdev,  in bio_size_ok()
5766 			 (u64)bio->bi_iter.bi_sector, (u_long)dev->bdev->bd_dev,  in submit_stripe_bio()
5771 	bio->bi_bdev = dev->bdev;  in submit_stripe_bio()
5787 	int nr_vecs = bio_get_nr_vecs(dev->bdev);  in breakup_stripe_bio()
5791 	bio = btrfs_bio_alloc(dev->bdev, physical >> 9, nr_vecs, GFP_NOFS);  in breakup_stripe_bio()
5882 		if (!dev || !dev->bdev || (rw & WRITE && !dev->writeable)) {  in btrfs_map_bio()
5891 		if (!bio_size_ok(dev->bdev, first_bio,  in btrfs_map_bio()
6047 	em->bdev = (struct block_device *)map;  in read_one_chunk()
6206 		if (!device->bdev && !btrfs_test_opt(root, DEGRADED))  in read_one_dev()
6209 		if(!device->bdev && !device->missing) {  in read_one_dev()
6680 	bh = btrfs_read_dev_super(device->bdev);  in btrfs_scratch_superblock()
6731 		map = (struct map_lookup *)em->bdev;  in btrfs_update_commit_device_bytes_used()