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bcache: partition support: add 16 minors per bcacheN device

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Signed-off-by: Eric Wheeler <[email protected]>
Tested-by: Wido den Hollander <[email protected]>
This commit is contained in:
Eric Wheeler 2016-10-23 18:19:20 -07:00 • committed by Jens Axboe
commit b8c0d911ac
1 changed files with 4 additions and 1 deletions
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5
drivers/md/bcache/super.c
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@ -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;
}