diff options
Diffstat (limited to 'include/linux/blk_types.h')
| -rw-r--r-- | include/linux/blk_types.h | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 7b7ac9ccec7a..cdf11191e645 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -59,12 +59,6 @@ struct bio { unsigned int bi_seg_front_size; unsigned int bi_seg_back_size; - unsigned int 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 */ - bio_end_io_t *bi_end_io; void *bi_private; @@ -80,7 +74,17 @@ struct bio { struct bio_integrity_payload *bi_integrity; /* data integrity */ #endif - bio_destructor_t *bi_destructor; /* destructor */ + /* + * Everything starting with bi_max_vecs will be preserved by bio_reset() + */ + + unsigned int 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 @@ -90,6 +94,8 @@ struct bio { struct bio_vec bi_inline_vecs[0]; }; +#define BIO_RESET_BYTES offsetof(struct bio, bi_max_vecs) + /* * bio flags */ @@ -105,6 +111,13 @@ struct bio { #define BIO_FS_INTEGRITY 9 /* fs owns integrity data, not block layer */ #define BIO_QUIET 10 /* Make BIO Quiet */ #define BIO_MAPPED_INTEGRITY 11/* integrity metadata has been remapped */ + +/* + * Flags starting here get preserved by bio_reset() - this includes + * BIO_POOL_IDX() + */ +#define BIO_RESET_BITS 12 + #define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag))) /* @@ -134,6 +147,7 @@ enum rq_flag_bits { __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_NOIDLE, /* don't anticipate more IO after this one */ __REQ_FUA, /* forced unit access */ @@ -172,15 +186,21 @@ enum rq_flag_bits { #define REQ_META (1 << __REQ_META) #define REQ_PRIO (1 << __REQ_PRIO) #define REQ_DISCARD (1 << __REQ_DISCARD) +#define REQ_WRITE_SAME (1 << __REQ_WRITE_SAME) #define REQ_NOIDLE (1 << __REQ_NOIDLE) #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_NOIDLE | REQ_FLUSH | REQ_FUA | REQ_SECURE) + REQ_DISCARD | REQ_WRITE_SAME | REQ_NOIDLE | REQ_FLUSH | REQ_FUA | \ + REQ_SECURE) #define REQ_CLONE_MASK REQ_COMMON_MASK +/* 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) + #define REQ_RAHEAD (1 << __REQ_RAHEAD) #define REQ_THROTTLED (1 << __REQ_THROTTLED) |