diff options
Diffstat (limited to 'drivers/block/null_blk.c')
-rw-r--r-- | drivers/block/null_blk.c | 76 |
1 files changed, 1 insertions, 75 deletions
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c index 8abfb1059909..47dd08499145 100644 --- a/drivers/block/null_blk.c +++ b/drivers/block/null_blk.c @@ -7,14 +7,8 @@ #include <linux/moduleparam.h> #include <linux/sched.h> #include <linux/fs.h> -#include <linux/blkdev.h> #include <linux/init.h> -#include <linux/slab.h> -#include <linux/blk-mq.h> -#include <linux/hrtimer.h> -#include <linux/configfs.h> -#include <linux/badblocks.h> -#include <linux/fault-inject.h> +#include "null_blk.h" #define PAGE_SECTORS_SHIFT (PAGE_SHIFT - SECTOR_SHIFT) #define PAGE_SECTORS (1 << PAGE_SECTORS_SHIFT) @@ -35,28 +29,6 @@ static inline u64 mb_per_tick(int mbps) return (1 << 20) / TICKS_PER_SEC * ((u64) mbps); } -struct nullb_cmd { - struct list_head list; - struct llist_node ll_list; - struct __call_single_data csd; - struct request *rq; - struct bio *bio; - unsigned int tag; - blk_status_t error; - struct nullb_queue *nq; - struct hrtimer timer; -}; - -struct nullb_queue { - unsigned long *tag_map; - wait_queue_head_t wait; - unsigned int queue_depth; - struct nullb_device *dev; - unsigned int requeue_selection; - - struct nullb_cmd *cmds; -}; - /* * Status flags for nullb_device. * @@ -92,52 +64,6 @@ struct nullb_page { #define NULLB_PAGE_LOCK (MAP_SZ - 1) #define NULLB_PAGE_FREE (MAP_SZ - 2) -struct nullb_device { - struct nullb *nullb; - struct config_item item; - struct radix_tree_root data; /* data stored in the disk */ - struct radix_tree_root cache; /* disk cache data */ - unsigned long flags; /* device flags */ - unsigned int curr_cache; - struct badblocks badblocks; - - unsigned long size; /* device size in MB */ - unsigned long completion_nsec; /* time in ns to complete a request */ - unsigned long cache_size; /* disk cache size in MB */ - unsigned int submit_queues; /* number of submission queues */ - unsigned int home_node; /* home node for the device */ - unsigned int queue_mode; /* block interface */ - unsigned int blocksize; /* block size */ - unsigned int irqmode; /* IRQ completion handler */ - unsigned int hw_queue_depth; /* queue depth */ - unsigned int index; /* index of the disk, only valid with a disk */ - unsigned int mbps; /* Bandwidth throttle cap (in MB/s) */ - bool blocking; /* blocking blk-mq device */ - bool use_per_node_hctx; /* use per-node allocation for hardware context */ - bool power; /* power on/off the device */ - bool memory_backed; /* if data is stored in memory */ - bool discard; /* if support discard */ -}; - -struct nullb { - struct nullb_device *dev; - struct list_head list; - unsigned int index; - struct request_queue *q; - struct gendisk *disk; - struct blk_mq_tag_set *tag_set; - struct blk_mq_tag_set __tag_set; - unsigned int queue_depth; - atomic_long_t cur_bytes; - struct hrtimer bw_timer; - unsigned long cache_flush_pos; - spinlock_t lock; - - struct nullb_queue *queues; - unsigned int nr_queues; - char disk_name[DISK_NAME_LEN]; -}; - static LIST_HEAD(nullb_list); static struct mutex lock; static int null_major; |