[PATCH] pmem: Dynamically allocate partition numbers

[Ross Zwisler]

Dynamically allocate minor numbers for partitions instead of statically
preallocating them.

Inspired by this commit:

469071a37afc NVMe: Dynamically allocate partition numbers

Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
---
 drivers/block/nd/pmem.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/block/nd/pmem.c b/drivers/block/nd/pmem.c
index 900dad61a6b9..b977def8981e 100644
--- a/drivers/block/nd/pmem.c
+++ b/drivers/block/nd/pmem.c
@@ -26,8 +26,6 @@
 #include <linux/nd.h>
 #include "nd.h"
 
-#define PMEM_MINORS		16
-
 struct pmem_device {
 	struct request_queue	*pmem_queue;
 	struct gendisk		*pmem_disk;
@@ -185,12 +183,12 @@ static struct pmem_device *pmem_alloc(struct device *dev, struct resource *res)
 	blk_queue_max_hw_sectors(pmem->pmem_queue, 1024);
 	blk_queue_bounce_limit(pmem->pmem_queue, BLK_BOUNCE_ANY);
 
-	disk = alloc_disk(PMEM_MINORS);
+	disk = alloc_disk(0);
 	if (!disk)
 		goto out_free_queue;
 
 	disk->major		= pmem_major;
-	disk->first_minor	= PMEM_MINORS * pmem->id;
+	disk->first_minor	= 0;
 	disk->fops		= &pmem_fops;
 	disk->private_data	= pmem;
 	disk->queue		= pmem->pmem_queue;
-- 
1.9.3






--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/