4 files changed, 17 insertions, 14 deletions

diff --git a/drivers/md/bcache/Kconfig b/drivers/md/bcache/Kconfig
index d1ca4d059c20..cf3e8096942a 100644
--- a/drivers/md/bcache/Kconfig
+++ b/drivers/md/bcache/Kconfig
@@ -2,6 +2,7 @@
 
 config BCACHE
 	tristate "Block device as cache"
+	select BLOCK_HOLDER_DEPRECATED if SYSFS
 	select CRC64
 	help
 	Allows a block device to be used as cache for other devices; uses
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 183a58c89377..0595559de174 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -378,7 +378,7 @@ static void do_btree_node_write(struct btree *b)
 		struct bvec_iter_all iter_all;
 
 		bio_for_each_segment_all(bv, b->bio, iter_all) {
-			memcpy(page_address(bv->bv_page), addr, PAGE_SIZE);
+			memcpy(bvec_virt(bv), addr, PAGE_SIZE);
 			addr += PAGE_SIZE;
 		}
 
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 185246a0d855..f2874c77ff79 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -885,11 +885,6 @@ static void bcache_device_free(struct bcache_device *d)
 		bcache_device_detach(d);
 
 	if (disk) {
-		bool disk_added = (disk->flags & GENHD_FL_UP) != 0;
-
-		if (disk_added)
-			del_gendisk(disk);
-
 		blk_cleanup_disk(disk);
 		ida_simple_remove(&bcache_device_idx,
 				  first_minor_to_idx(disk->first_minor));
@@ -931,20 +926,20 @@ static int bcache_device_init(struct bcache_device *d, unsigned int block_size,
 	n = BITS_TO_LONGS(d->nr_stripes) * sizeof(unsigned long);
 	d->full_dirty_stripes = kvzalloc(n, GFP_KERNEL);
 	if (!d->full_dirty_stripes)
-		return -ENOMEM;
+		goto out_free_stripe_sectors_dirty;
 
 	idx = ida_simple_get(&bcache_device_idx, 0,
 				BCACHE_DEVICE_IDX_MAX, GFP_KERNEL);
 	if (idx < 0)
-		return idx;
+		goto out_free_full_dirty_stripes;
 
 	if (bioset_init(&d->bio_split, 4, offsetof(struct bbio, bio),
 			BIOSET_NEED_BVECS|BIOSET_NEED_RESCUER))
-		goto err;
+		goto out_ida_remove;
 
 	d->disk = blk_alloc_disk(NUMA_NO_NODE);
 	if (!d->disk)
-		goto err;
+		goto out_bioset_exit;
 
 	set_capacity(d->disk, sectors);
 	snprintf(d->disk->disk_name, DISK_NAME_LEN, "bcache%i", idx);
@@ -987,8 +982,14 @@ static int bcache_device_init(struct bcache_device *d, unsigned int block_size,
 
 	return 0;
 
-err:
+out_bioset_exit:
+	bioset_exit(&d->bio_split);
+out_ida_remove:
 	ida_simple_remove(&bcache_device_idx, idx);
+out_free_full_dirty_stripes:
+	kvfree(d->full_dirty_stripes);
+out_free_stripe_sectors_dirty:
+	kvfree(d->stripe_sectors_dirty);
 	return -ENOMEM;
 
 }
@@ -1365,8 +1366,10 @@ static void cached_dev_free(struct closure *cl)
 
 	mutex_lock(&bch_register_lock);
 
-	if (atomic_read(&dc->running))
+	if (atomic_read(&dc->running)) {
 		bd_unlink_disk_holder(dc->bdev, dc->disk.disk);
+		del_gendisk(dc->disk.disk);
+	}
 	bcache_device_free(&dc->disk);
 	list_del(&dc->list);
 
@@ -1512,6 +1515,7 @@ static void flash_dev_free(struct closure *cl)
 	mutex_lock(&bch_register_lock);
 	atomic_long_sub(bcache_dev_sectors_dirty(d),
 			&d->c->flash_dev_dirty_sectors);
+	del_gendisk(d->disk);
 	bcache_device_free(d);
 	mutex_unlock(&bch_register_lock);
 	kobject_put(&d->kobj);
diff --git a/drivers/md/bcache/util.h b/drivers/md/bcache/util.h
index bca4a7c97da7..b64460a76267 100644
--- a/drivers/md/bcache/util.h
+++ b/drivers/md/bcache/util.h
@@ -15,8 +15,6 @@
 
 #include "closure.h"
 
-#define PAGE_SECTORS		(PAGE_SIZE / 512)
-
 struct closure;
 
 #ifdef CONFIG_BCACHE_DEBUG