[mirror_ubuntu-artful-kernel.git] / include / linux / blk_types.h

/*
 * Block data types and constants.  Directly include this file only to
 * break include dependency loop.
 */
#ifndef __LINUX_BLK_TYPES_H
#define __LINUX_BLK_TYPES_H

#include <linux/types.h>
#include <linux/bvec.h>

struct bio_set;
struct bio;
struct bio_integrity_payload;
struct page;
struct block_device;
struct io_context;
struct cgroup_subsys_state;
typedef void (bio_end_io_t) (struct bio *);

/*
 * main unit of I/O for the block layer and lower layers (ie drivers and
 * stacking drivers)
 */
struct bio {
	struct bio		*bi_next;	/* request queue link */
	struct block_device	*bi_bdev;
	int			bi_error;
	unsigned int		bi_opf;		/* bottom bits req flags,
						 * top bits REQ_OP. Use
						 * accessors.
						 */
	unsigned short		bi_flags;	/* status, command, etc */
	unsigned short		bi_ioprio;

	struct bvec_iter	bi_iter;

	/* Number of segments in this BIO after
	 * physical address coalescing is performed.
	 */
	unsigned int		bi_phys_segments;

	/*
	 * To keep track of the max segment size, we account for the
	 * sizes of the first and last mergeable segments in this bio.
	 */
	unsigned int		bi_seg_front_size;
	unsigned int		bi_seg_back_size;

	atomic_t		__bi_remaining;

	bio_end_io_t		*bi_end_io;

	void			*bi_private;
#ifdef CONFIG_BLK_CGROUP
	/*
	 * Optional ioc and css associated with this bio.  Put on bio
	 * release.  Read comment on top of bio_associate_current().
	 */
	struct io_context	*bi_ioc;
	struct cgroup_subsys_state *bi_css;
#endif
	union {
#if defined(CONFIG_BLK_DEV_INTEGRITY)
		struct bio_integrity_payload *bi_integrity; /* data integrity */
#endif
	};

	unsigned short		bi_vcnt;	/* how many bio_vec's */

	/*
	 * Everything starting with bi_max_vecs will be preserved by bio_reset()
	 */

	unsigned short		bi_max_vecs;	/* max bvl_vecs we can hold */

	atomic_t		__bi_cnt;	/* pin count */

	struct bio_vec		*bi_io_vec;	/* the actual vec list */

	struct bio_set		*bi_pool;

	/*
	 * We can inline a number of vecs at the end of the bio, to avoid
	 * double allocations for a small number of bio_vecs. This member
	 * MUST obviously be kept at the very end of the bio.
	 */
	struct bio_vec		bi_inline_vecs[0];
};

#define BIO_RESET_BYTES		offsetof(struct bio, bi_max_vecs)

/*
 * bio flags
 */
#define BIO_SEG_VALID	1	/* bi_phys_segments valid */
#define BIO_CLONED	2	/* doesn't own data */
#define BIO_BOUNCED	3	/* bio is a bounce bio */
#define BIO_USER_MAPPED 4	/* contains user pages */
#define BIO_NULL_MAPPED 5	/* contains invalid user pages */
#define BIO_QUIET	6	/* Make BIO Quiet */
#define BIO_CHAIN	7	/* chained bio, ->bi_remaining in effect */
#define BIO_REFFED	8	/* bio has elevated ->bi_cnt */
#define BIO_THROTTLED	9	/* This bio has already been subjected to
				 * throttling rules. Don't do it again. */

/*
 * Flags starting here get preserved by bio_reset() - this includes
 * BVEC_POOL_IDX()
 */
#define BIO_RESET_BITS	10

/*
 * We support 6 different bvec pools, the last one is magic in that it
 * is backed by a mempool.
 */
#define BVEC_POOL_NR		6
#define BVEC_POOL_MAX		(BVEC_POOL_NR - 1)

/*
 * Top 4 bits of bio flags indicate the pool the bvecs came from.  We add
 * 1 to the actual index so that 0 indicates that there are no bvecs to be
 * freed.
 */
#define BVEC_POOL_BITS		(4)
#define BVEC_POOL_OFFSET	(16 - BVEC_POOL_BITS)
#define BVEC_POOL_IDX(bio)	((bio)->bi_flags >> BVEC_POOL_OFFSET)

/*
 * Operations and flags common to the bio and request structures.
 * We use 8 bits for encoding the operation, and the remaining 24 for flags.
 *
 * The least significant bit of the operation number indicates the data
 * transfer direction:
 *
 *   - if the least significant bit is set transfers are TO the device
 *   - if the least significant bit is not set transfers are FROM the device
 *
 * If a operation does not transfer data the least significant bit has no
 * meaning.
 */
#define REQ_OP_BITS	8
#define REQ_OP_MASK	((1 << REQ_OP_BITS) - 1)
#define REQ_FLAG_BITS	24

enum req_opf {
	/* read sectors from the device */
	REQ_OP_READ		= 0,
	/* write sectors to the device */
	REQ_OP_WRITE		= 1,
	/* flush the volatile write cache */
	REQ_OP_FLUSH		= 2,
	/* discard sectors */
	REQ_OP_DISCARD		= 3,
	/* get zone information */
	REQ_OP_ZONE_REPORT	= 4,
	/* securely erase sectors */
	REQ_OP_SECURE_ERASE	= 5,
	/* seset a zone write pointer */
	REQ_OP_ZONE_RESET	= 6,
	/* write the same sector many times */
	REQ_OP_WRITE_SAME	= 7,
	/* write the zero filled sector many times */
	REQ_OP_WRITE_ZEROES	= 8,

	/* SCSI passthrough using struct scsi_request */
	REQ_OP_SCSI_IN		= 32,
	REQ_OP_SCSI_OUT		= 33,
	/* Driver private requests */
	REQ_OP_DRV_IN		= 34,
	REQ_OP_DRV_OUT		= 35,

	REQ_OP_LAST,
};

enum req_flag_bits {
	__REQ_FAILFAST_DEV =	/* no driver retries of device errors */
		REQ_OP_BITS,
	__REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
	__REQ_FAILFAST_DRIVER,	/* no driver retries of driver errors */
	__REQ_SYNC,		/* request is sync (sync write or read) */
	__REQ_META,		/* metadata io request */
	__REQ_PRIO,		/* boost priority in cfq */
	__REQ_NOMERGE,		/* don't touch this for merging */
	__REQ_IDLE,		/* anticipate more IO after this one */
	__REQ_INTEGRITY,	/* I/O includes block integrity payload */
	__REQ_FUA,		/* forced unit access */
	__REQ_PREFLUSH,		/* request for cache flush */
	__REQ_RAHEAD,		/* read ahead, can fail anytime */
	__REQ_BACKGROUND,	/* background IO */
	__REQ_NR_BITS,		/* stops here */
};

#define REQ_FAILFAST_DEV	(1ULL << __REQ_FAILFAST_DEV)
#define REQ_FAILFAST_TRANSPORT	(1ULL << __REQ_FAILFAST_TRANSPORT)
#define REQ_FAILFAST_DRIVER	(1ULL << __REQ_FAILFAST_DRIVER)
#define REQ_SYNC		(1ULL << __REQ_SYNC)
#define REQ_META		(1ULL << __REQ_META)
#define REQ_PRIO		(1ULL << __REQ_PRIO)
#define REQ_NOMERGE		(1ULL << __REQ_NOMERGE)
#define REQ_IDLE		(1ULL << __REQ_IDLE)
#define REQ_INTEGRITY		(1ULL << __REQ_INTEGRITY)
#define REQ_FUA			(1ULL << __REQ_FUA)
#define REQ_PREFLUSH		(1ULL << __REQ_PREFLUSH)
#define REQ_RAHEAD		(1ULL << __REQ_RAHEAD)
#define REQ_BACKGROUND		(1ULL << __REQ_BACKGROUND)

#define REQ_FAILFAST_MASK \
	(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)

#define REQ_NOMERGE_FLAGS \
	(REQ_NOMERGE | REQ_PREFLUSH | REQ_FUA)

#define bio_op(bio) \
	((bio)->bi_opf & REQ_OP_MASK)
#define req_op(req) \
	((req)->cmd_flags & REQ_OP_MASK)

/* obsolete, don't use in new code */
static inline void bio_set_op_attrs(struct bio *bio, unsigned op,
		unsigned op_flags)
{
	bio->bi_opf = op | op_flags;
}

static inline bool op_is_write(unsigned int op)
{
	return (op & 1);
}

/*
 * Check if the bio or request is one that needs special treatment in the
 * flush state machine.
 */
static inline bool op_is_flush(unsigned int op)
{
	return op & (REQ_FUA | REQ_PREFLUSH);
}

/*
 * Reads are always treated as synchronous, as are requests with the FUA or
 * PREFLUSH flag.  Other operations may be marked as synchronous using the
 * REQ_SYNC flag.
 */
static inline bool op_is_sync(unsigned int op)
{
	return (op & REQ_OP_MASK) == REQ_OP_READ ||
		(op & (REQ_SYNC | REQ_FUA | REQ_PREFLUSH));
}

typedef unsigned int blk_qc_t;
#define BLK_QC_T_NONE		-1U
#define BLK_QC_T_SHIFT		16
#define BLK_QC_T_INTERNAL	(1U << 31)

static inline bool blk_qc_t_valid(blk_qc_t cookie)
{
	return cookie != BLK_QC_T_NONE;
}

static inline blk_qc_t blk_tag_to_qc_t(unsigned int tag, unsigned int queue_num,
				       bool internal)
{
	blk_qc_t ret = tag | (queue_num << BLK_QC_T_SHIFT);

	if (internal)
		ret |= BLK_QC_T_INTERNAL;

	return ret;
}

static inline unsigned int blk_qc_t_to_queue_num(blk_qc_t cookie)
{
	return (cookie & ~BLK_QC_T_INTERNAL) >> BLK_QC_T_SHIFT;
}

static inline unsigned int blk_qc_t_to_tag(blk_qc_t cookie)
{
	return cookie & ((1u << BLK_QC_T_SHIFT) - 1);
}

static inline bool blk_qc_t_is_internal(blk_qc_t cookie)
{
	return (cookie & BLK_QC_T_INTERNAL) != 0;
}

struct blk_issue_stat {
	u64 time;
};

#define BLK_RQ_STAT_BATCH	64

struct blk_rq_stat {
	s64 mean;
	u64 min;
	u64 max;
	s32 nr_samples;
	s32 nr_batch;
	u64 batch;
	s64 time;
};

#endif /* __LINUX_BLK_TYPES_H */
Commit	Line	Data
7cc01581 TH	1	/*
	2	* Block data types and constants. Directly include this file only to
	3	* break include dependency loop.
	4	*/
	5	#ifndef __LINUX_BLK_TYPES_H
	6	#define __LINUX_BLK_TYPES_H
	7
7cc01581	8	#include <linux/types.h>
0781e79e	9	#include <linux/bvec.h>
7cc01581 TH	10
	11	struct bio_set;
	12	struct bio;
	13	struct bio_integrity_payload;
	14	struct page;
	15	struct block_device;
852c788f TH	16	struct io_context;
852c788f TH	17	struct cgroup_subsys_state;
4246a0b6	18	typedef void (bio_end_io_t) (struct bio *);
7cc01581	19
7cc01581 TH	20	/*
	21	* main unit of I/O for the block layer and lower layers (ie drivers and
	22	* stacking drivers)
	23	*/
	24	struct bio {
7cc01581 TH	25	struct bio bi_next; / request queue link */
7cc01581 TH	26	struct block_device *bi_bdev;
2c68f6dc	27	int bi_error;
1eff9d32 JA	28	unsigned int bi_opf; /* bottom bits req flags,
	29	* top bits REQ_OP. Use
	30	* accessors.
4e1b2d52	31	*/
c0acf12a	32	unsigned short bi_flags; /* status, command, etc */
43b62ce3	33	unsigned short bi_ioprio;
7cc01581	34
4f024f37	35	struct bvec_iter bi_iter;
7cc01581 TH	36
	37	/* Number of segments in this BIO after
	38	* physical address coalescing is performed.
	39	*/
	40	unsigned int bi_phys_segments;
	41
7cc01581 TH	42	/*
	43	* To keep track of the max segment size, we account for the
	44	* sizes of the first and last mergeable segments in this bio.
	45	*/
	46	unsigned int bi_seg_front_size;
	47	unsigned int bi_seg_back_size;
	48
c4cf5261	49	atomic_t __bi_remaining;
196d38bc	50
7cc01581 TH	51	bio_end_io_t *bi_end_io;
	52
	53	void *bi_private;
852c788f TH	54	#ifdef CONFIG_BLK_CGROUP
	55	/*
	56	* Optional ioc and css associated with this bio. Put on bio
	57	* release. Read comment on top of bio_associate_current().
	58	*/
	59	struct io_context *bi_ioc;
	60	struct cgroup_subsys_state *bi_css;
	61	#endif
180b2f95	62	union {
7cc01581	63	#if defined(CONFIG_BLK_DEV_INTEGRITY)
180b2f95	64	struct bio_integrity_payload bi_integrity; / data integrity */
7cc01581	65	#endif
180b2f95	66	};
7cc01581	67
4f024f37 KO	68	unsigned short bi_vcnt; /* how many bio_vec's */
4f024f37 KO	69
f44b48c7 KO	70	/*
	71	* Everything starting with bi_max_vecs will be preserved by bio_reset()
	72	*/
	73
4f024f37	74	unsigned short bi_max_vecs; /* max bvl_vecs we can hold */
f44b48c7	75
dac56212	76	atomic_t __bi_cnt; /* pin count */
f44b48c7 KO	77
	78	struct bio_vec bi_io_vec; / the actual vec list */
	79
395c72a7 KO	80	struct bio_set *bi_pool;
395c72a7 KO	81
7cc01581 TH	82	/*
	83	* We can inline a number of vecs at the end of the bio, to avoid
	84	* double allocations for a small number of bio_vecs. This member
	85	* MUST obviously be kept at the very end of the bio.
	86	*/
	87	struct bio_vec bi_inline_vecs[0];
	88	};
	89
f44b48c7 KO	90	#define BIO_RESET_BYTES offsetof(struct bio, bi_max_vecs)
f44b48c7 KO	91
7cc01581 TH	92	/*
	93	* bio flags
	94	*/
b2dbe0a6 JA	95	#define BIO_SEG_VALID 1 /* bi_phys_segments valid */
	96	#define BIO_CLONED 2 /* doesn't own data */
	97	#define BIO_BOUNCED 3 /* bio is a bounce bio */
	98	#define BIO_USER_MAPPED 4 /* contains user pages */
	99	#define BIO_NULL_MAPPED 5 /* contains invalid user pages */
	100	#define BIO_QUIET 6 /* Make BIO Quiet */
a3ad0a9d JK	101	#define BIO_CHAIN 7 /* chained bio, ->bi_remaining in effect */
a3ad0a9d JK	102	#define BIO_REFFED 8 /* bio has elevated ->bi_cnt */
8d2bbd4c CH	103	#define BIO_THROTTLED 9 /* This bio has already been subjected to
8d2bbd4c CH	104	* throttling rules. Don't do it again. */
f44b48c7 KO	105
	106	/*
	107	* Flags starting here get preserved by bio_reset() - this includes
ed996a52	108	* BVEC_POOL_IDX()
f44b48c7	109	*/
c0acf12a	110	#define BIO_RESET_BITS 10
f44b48c7	111
7cc01581	112	/*
ed996a52 CH	113	* We support 6 different bvec pools, the last one is magic in that it
ed996a52 CH	114	* is backed by a mempool.
7cc01581	115	*/
ed996a52 CH	116	#define BVEC_POOL_NR 6
	117	#define BVEC_POOL_MAX (BVEC_POOL_NR - 1)
	118
	119	/*
	120	* Top 4 bits of bio flags indicate the pool the bvecs came from. We add
	121	* 1 to the actual index so that 0 indicates that there are no bvecs to be
	122	* freed.
	123	*/
	124	#define BVEC_POOL_BITS (4)
c0acf12a	125	#define BVEC_POOL_OFFSET (16 - BVEC_POOL_BITS)
ed996a52	126	#define BVEC_POOL_IDX(bio) ((bio)->bi_flags >> BVEC_POOL_OFFSET)
7cc01581 TH	127
7cc01581 TH	128	/*
ef295ecf CH	129	* Operations and flags common to the bio and request structures.
ef295ecf CH	130	* We use 8 bits for encoding the operation, and the remaining 24 for flags.
87374179 CH	131	*
	132	* The least significant bit of the operation number indicates the data
	133	* transfer direction:
	134	*
	135	* - if the least significant bit is set transfers are TO the device
	136	* - if the least significant bit is not set transfers are FROM the device
	137	*
	138	* If a operation does not transfer data the least significant bit has no
	139	* meaning.
7cc01581	140	*/
ef295ecf CH	141	#define REQ_OP_BITS 8
	142	#define REQ_OP_MASK ((1 << REQ_OP_BITS) - 1)
	143	#define REQ_FLAG_BITS 24
	144
	145	enum req_opf {
87374179 CH	146	/* read sectors from the device */
	147	REQ_OP_READ = 0,
	148	/* write sectors to the device */
	149	REQ_OP_WRITE = 1,
	150	/* flush the volatile write cache */
	151	REQ_OP_FLUSH = 2,
	152	/* discard sectors */
	153	REQ_OP_DISCARD = 3,
	154	/* get zone information */
	155	REQ_OP_ZONE_REPORT = 4,
	156	/* securely erase sectors */
	157	REQ_OP_SECURE_ERASE = 5,
	158	/* seset a zone write pointer */
	159	REQ_OP_ZONE_RESET = 6,
	160	/* write the same sector many times */
	161	REQ_OP_WRITE_SAME = 7,
a6f0788e CK	162	/* write the zero filled sector many times */
a6f0788e CK	163	REQ_OP_WRITE_ZEROES = 8,
ef295ecf	164
aebf526b CH	165	/* SCSI passthrough using struct scsi_request */
	166	REQ_OP_SCSI_IN = 32,
	167	REQ_OP_SCSI_OUT = 33,
	168	/* Driver private requests */
	169	REQ_OP_DRV_IN = 34,
	170	REQ_OP_DRV_OUT = 35,
	171
ef295ecf CH	172	REQ_OP_LAST,
	173	};
	174
	175	enum req_flag_bits {
	176	__REQ_FAILFAST_DEV = /* no driver retries of device errors */
	177	REQ_OP_BITS,
7cc01581 TH	178	__REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
7cc01581 TH	179	__REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */
7cc01581 TH	180	__REQ_SYNC, /* request is sync (sync write or read) */
7cc01581 TH	181	__REQ_META, /* metadata io request */
65299a3b	182	__REQ_PRIO, /* boost priority in cfq */
bd1c1c21	183	__REQ_NOMERGE, /* don't touch this for merging */
a2b80967	184	__REQ_IDLE, /* anticipate more IO after this one */
180b2f95	185	__REQ_INTEGRITY, /* I/O includes block integrity payload */
8e4bf844	186	__REQ_FUA, /* forced unit access */
28a8f0d3	187	__REQ_PREFLUSH, /* request for cache flush */
188bd2b1	188	__REQ_RAHEAD, /* read ahead, can fail anytime */
1d796d6a	189	__REQ_BACKGROUND, /* background IO */
7cc01581 TH	190	__REQ_NR_BITS, /* stops here */
	191	};
	192
5953316d JA	193	#define REQ_FAILFAST_DEV (1ULL << __REQ_FAILFAST_DEV)
	194	#define REQ_FAILFAST_TRANSPORT (1ULL << __REQ_FAILFAST_TRANSPORT)
	195	#define REQ_FAILFAST_DRIVER (1ULL << __REQ_FAILFAST_DRIVER)
	196	#define REQ_SYNC (1ULL << __REQ_SYNC)
	197	#define REQ_META (1ULL << __REQ_META)
	198	#define REQ_PRIO (1ULL << __REQ_PRIO)
ef295ecf	199	#define REQ_NOMERGE (1ULL << __REQ_NOMERGE)
a2b80967	200	#define REQ_IDLE (1ULL << __REQ_IDLE)
180b2f95	201	#define REQ_INTEGRITY (1ULL << __REQ_INTEGRITY)
ef295ecf CH	202	#define REQ_FUA (1ULL << __REQ_FUA)
	203	#define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH)
	204	#define REQ_RAHEAD (1ULL << __REQ_RAHEAD)
1d796d6a	205	#define REQ_BACKGROUND (1ULL << __REQ_BACKGROUND)
7cc01581 TH	206
	207	#define REQ_FAILFAST_MASK \
	208	(REQ_FAILFAST_DEV \| REQ_FAILFAST_TRANSPORT \| REQ_FAILFAST_DRIVER)
7cc01581	209
e2a60da7	210	#define REQ_NOMERGE_FLAGS \
e8064021	211	(REQ_NOMERGE \| REQ_PREFLUSH \| REQ_FUA)
e2a60da7	212
ef295ecf CH	213	#define bio_op(bio) \
	214	((bio)->bi_opf & REQ_OP_MASK)
	215	#define req_op(req) \
	216	((req)->cmd_flags & REQ_OP_MASK)
7cc01581	217
ef295ecf	218	/* obsolete, don't use in new code */
93c5bdf7 CH	219	static inline void bio_set_op_attrs(struct bio *bio, unsigned op,
	220	unsigned op_flags)
	221	{
	222	bio->bi_opf = op \| op_flags;
	223	}
c11f0c0b	224
87374179 CH	225	static inline bool op_is_write(unsigned int op)
	226	{
	227	return (op & 1);
	228	}
	229
f73f44eb CH	230	/*
	231	* Check if the bio or request is one that needs special treatment in the
	232	* flush state machine.
	233	*/
	234	static inline bool op_is_flush(unsigned int op)
	235	{
	236	return op & (REQ_FUA \| REQ_PREFLUSH);
	237	}
	238
b685d3d6 CH	239	/*
	240	* Reads are always treated as synchronous, as are requests with the FUA or
	241	* PREFLUSH flag. Other operations may be marked as synchronous using the
	242	* REQ_SYNC flag.
	243	*/
ef295ecf CH	244	static inline bool op_is_sync(unsigned int op)
ef295ecf CH	245	{
b685d3d6 CH	246	return (op & REQ_OP_MASK) == REQ_OP_READ \|\|
b685d3d6 CH	247	(op & (REQ_SYNC \| REQ_FUA \| REQ_PREFLUSH));
ef295ecf	248	}
c11f0c0b	249
dece1635	250	typedef unsigned int blk_qc_t;
fd2d3326 JA	251	#define BLK_QC_T_NONE -1U
	252	#define BLK_QC_T_SHIFT 16
	253	#define BLK_QC_T_INTERNAL (1U << 31)
dece1635 JA	254
	255	static inline bool blk_qc_t_valid(blk_qc_t cookie)
	256	{
	257	return cookie != BLK_QC_T_NONE;
	258	}
	259
fd2d3326 JA	260	static inline blk_qc_t blk_tag_to_qc_t(unsigned int tag, unsigned int queue_num,
fd2d3326 JA	261	bool internal)
dece1635	262	{
fd2d3326 JA	263	blk_qc_t ret = tag \| (queue_num << BLK_QC_T_SHIFT);
	264
	265	if (internal)
	266	ret \|= BLK_QC_T_INTERNAL;
	267
	268	return ret;
dece1635 JA	269	}
	270
	271	static inline unsigned int blk_qc_t_to_queue_num(blk_qc_t cookie)
	272	{
fd2d3326	273	return (cookie & ~BLK_QC_T_INTERNAL) >> BLK_QC_T_SHIFT;
dece1635 JA	274	}
	275
	276	static inline unsigned int blk_qc_t_to_tag(blk_qc_t cookie)
	277	{
e3a7a3bf	278	return cookie & ((1u << BLK_QC_T_SHIFT) - 1);
dece1635 JA	279	}
dece1635 JA	280
fd2d3326 JA	281	static inline bool blk_qc_t_is_internal(blk_qc_t cookie)
	282	{
	283	return (cookie & BLK_QC_T_INTERNAL) != 0;
	284	}
	285
cf43e6be JA	286	struct blk_issue_stat {
	287	u64 time;
	288	};
	289
	290	#define BLK_RQ_STAT_BATCH 64
	291
	292	struct blk_rq_stat {
	293	s64 mean;
	294	u64 min;
	295	u64 max;
	296	s32 nr_samples;
	297	s32 nr_batch;
	298	u64 batch;
	299	s64 time;
	300	};
	301
7cc01581	302	#endif /* __LINUX_BLK_TYPES_H */