diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bio.h | 6 | ||||
| -rw-r--r-- | include/linux/blk_types.h | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 40d054185277..36aa641cde28 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -416,6 +416,12 @@ static inline void bio_io_error(struct bio *bio) bio_endio(bio); } +static inline void bio_wouldblock_error(struct bio *bio) +{ + bio->bi_status = BLK_STS_AGAIN; + bio_endio(bio); +} + struct request_queue; extern int bio_phys_segments(struct request_queue *, struct bio *); diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index dcd45b15a3a5..e210da6d14b8 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -36,6 +36,8 @@ typedef u8 __bitwise blk_status_t; /* hack for device mapper, don't use elsewhere: */ #define BLK_STS_DM_REQUEUE ((__force blk_status_t)11) +#define BLK_STS_AGAIN ((__force blk_status_t)12) + struct blk_issue_stat { u64 stat; }; @@ -224,6 +226,7 @@ enum req_flag_bits { /* command specific flags for REQ_OP_WRITE_ZEROES: */ __REQ_NOUNMAP, /* do not free blocks when zeroing */ + __REQ_NOWAIT, /* Don't wait if request will block */ __REQ_NR_BITS, /* stops here */ }; @@ -242,6 +245,7 @@ enum req_flag_bits { #define REQ_BACKGROUND (1ULL << __REQ_BACKGROUND) #define REQ_NOUNMAP (1ULL << __REQ_NOUNMAP) +#define REQ_NOWAIT (1ULL << __REQ_NOWAIT) #define REQ_FAILFAST_MASK \ (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER) |