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Commit b8c0d911 authored by Eric Wheeler's avatar Eric Wheeler Committed by Jens Axboe
Browse files

bcache: partition support: add 16 minors per bcacheN device 



Signed-off-by: default avatarEric Wheeler <bcache@linux.ewheeler.net>
Tested-by: default avatarWido den Hollander <wido@widodh.nl>
parent be628be0

drivers/md/bcache/super.c

+4 −1
Original line number Diff line number Diff line
@@ -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;

	}