diff options
Diffstat (limited to 'include/linux/blk_types.h')
| -rw-r--r-- | include/linux/blk_types.h | 52 |
1 files changed, 20 insertions, 32 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 5efb6f12d2f5..23c1ab2a9475 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -48,7 +48,9 @@ struct bio { struct block_device *bi_bdev; unsigned int bi_flags; /* status, command, etc */ int bi_error; - unsigned int bi_rw; /* READ/WRITE */ + unsigned int bi_rw; /* bottom bits req flags, + * top bits REQ_OP + */ unsigned short bi_ioprio; struct bvec_iter bi_iter; @@ -106,6 +108,16 @@ struct bio { struct bio_vec bi_inline_vecs[0]; }; +#define BIO_OP_SHIFT (8 * sizeof(unsigned int) - REQ_OP_BITS) +#define bio_op(bio) ((bio)->bi_rw >> BIO_OP_SHIFT) + +#define bio_set_op_attrs(bio, op, op_flags) do { \ + WARN_ON(op >= (1 << REQ_OP_BITS)); \ + (bio)->bi_rw &= ((1 << BIO_OP_SHIFT) - 1); \ + (bio)->bi_rw |= ((unsigned int) (op) << BIO_OP_SHIFT); \ + (bio)->bi_rw |= op_flags; \ +} while (0) + #define BIO_RESET_BYTES offsetof(struct bio, bi_max_vecs) /* @@ -144,7 +156,6 @@ struct bio { */ enum rq_flag_bits { /* common flags */ - __REQ_WRITE, /* not set, read. set, write */ __REQ_FAILFAST_DEV, /* no driver retries of device errors */ __REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */ __REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */ @@ -152,9 +163,7 @@ enum rq_flag_bits { __REQ_SYNC, /* request is sync (sync write or read) */ __REQ_META, /* metadata io request */ __REQ_PRIO, /* boost priority in cfq */ - __REQ_DISCARD, /* request to discard sectors */ - __REQ_SECURE, /* secure discard (used with __REQ_DISCARD) */ - __REQ_WRITE_SAME, /* write same block many times */ + __REQ_SECURE, /* secure discard (used with REQ_OP_DISCARD) */ __REQ_NOIDLE, /* don't anticipate more IO after this one */ __REQ_INTEGRITY, /* I/O includes block integrity payload */ @@ -190,28 +199,22 @@ enum rq_flag_bits { __REQ_NR_BITS, /* stops here */ }; -#define REQ_WRITE (1ULL << __REQ_WRITE) #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_DISCARD (1ULL << __REQ_DISCARD) -#define REQ_WRITE_SAME (1ULL << __REQ_WRITE_SAME) #define REQ_NOIDLE (1ULL << __REQ_NOIDLE) #define REQ_INTEGRITY (1ULL << __REQ_INTEGRITY) #define REQ_FAILFAST_MASK \ (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER) #define REQ_COMMON_MASK \ - (REQ_WRITE | REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | \ - REQ_DISCARD | REQ_WRITE_SAME | REQ_NOIDLE | REQ_FLUSH | REQ_FUA | \ - REQ_SECURE | REQ_INTEGRITY | REQ_NOMERGE) + (REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | REQ_NOIDLE | \ + REQ_FLUSH | REQ_FUA | REQ_SECURE | REQ_INTEGRITY | REQ_NOMERGE) #define REQ_CLONE_MASK REQ_COMMON_MASK -#define BIO_NO_ADVANCE_ITER_MASK (REQ_DISCARD|REQ_WRITE_SAME) - /* This mask is used for both bio and request merge checking */ #define REQ_NOMERGE_FLAGS \ (REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_FLUSH | REQ_FUA | REQ_FLUSH_SEQ) @@ -243,27 +246,12 @@ enum rq_flag_bits { enum req_op { REQ_OP_READ, - REQ_OP_WRITE = REQ_WRITE, - REQ_OP_DISCARD = REQ_DISCARD, - REQ_OP_WRITE_SAME = REQ_WRITE_SAME, + REQ_OP_WRITE, + REQ_OP_DISCARD, /* request to discard sectors */ + REQ_OP_WRITE_SAME, /* write same block many times */ }; -/* - * tmp cpmpat. Users used to set the write bit for all non reads, but - * we will be dropping the bitmap use for ops. Support both until - * the end of the patchset. - */ -static inline int op_from_rq_bits(u64 flags) -{ - if (flags & REQ_OP_DISCARD) - return REQ_OP_DISCARD; - else if (flags & REQ_OP_WRITE_SAME) - return REQ_OP_WRITE_SAME; - else if (flags & REQ_OP_WRITE) - return REQ_OP_WRITE; - else - return REQ_OP_READ; -} +#define REQ_OP_BITS 2 typedef unsigned int blk_qc_t; #define BLK_QC_T_NONE -1U |