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-rw-r--r--drivers/md/bcache/super.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index b33dd3bd104f..3a19cbc8b230 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -58,6 +58,7 @@ static wait_queue_head_t unregister_wait;
struct workqueue_struct *bcache_wq;
#define BTREE_MAX_PAGES (256 * 1024 / PAGE_SIZE)
+#define BCACHE_MINORS 16 /* partition support */
/* Superblock */
@@ -783,8 +784,10 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size,
if (minor < 0)
return minor;
+ minor *= BCACHE_MINORS;
+
if (!(d->bio_split = bioset_create(4, offsetof(struct bbio, bio))) ||
- !(d->disk = alloc_disk(1))) {
+ !(d->disk = alloc_disk(BCACHE_MINORS))) {
ida_simple_remove(&bcache_minor, minor);
return -ENOMEM;
}