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sys/sys/bio.h

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#define BIO_FLUSH 0x05 /* Commit outstanding I/O now */ #define BIO_FLUSH 0x05 /* Commit outstanding I/O now */
#define BIO_CMD0 0x06 /* Available for local hacks */ #define BIO_CMD0 0x06 /* Available for local hacks */
#define BIO_CMD1 0x07 /* Available for local hacks */ #define BIO_CMD1 0x07 /* Available for local hacks */
#define BIO_CMD2 0x08 /* Available for local hacks */ #define BIO_CMD2 0x08 /* Available for local hacks */
#define BIO_ZONE 0x09 /* Zone command */ #define BIO_ZONE 0x09 /* Zone command */
#define BIO_SPEEDUP 0x0a /* Upper layers face shortage */ #define BIO_SPEEDUP 0x0a /* Upper layers face shortage */
/* bio_flags */ /* bio_flags */
#define BIO_ERROR 0x01 /* An error occurred processing this bio. */ #define BIO_ERROR_COMPAT 0x01 /* KBI compat on stable/15. */
#define BIO_DONE 0x02 /* This bio is finished. */ #define BIO_DONE 0x02 /* This bio is finished. */
#define BIO_ONQUEUE 0x04 /* This bio is in a queue & not yet taken. */ #define BIO_ONQUEUE 0x04 /* This bio is in a queue & not yet taken. */
/* /*
* This bio must be executed after all previous bios in the queue have been * This bio must be executed after all previous bios in the queue have been
* executed, and before any successive bios can be executed. * executed, and before any successive bios can be executed.
*/ */
#define BIO_ORDERED 0x08 #define BIO_ORDERED 0x08
#define BIO_UNMAPPED 0x10 #define BIO_UNMAPPED 0x10
#define BIO_TRANSIENT_MAPPING 0x20 #define BIO_TRANSIENT_MAPPING 0x20
#define BIO_VLIST 0x40 #define BIO_VLIST 0x40
#define BIO_SWAP 0x200 /* Swap-related I/O */ #define BIO_SWAP 0x200 /* Swap-related I/O */
#define BIO_ERROR 0x1000 /* An error occurred processing this bio. */
#define BIO_EXTERR 0x2000 #define BIO_EXTERR 0x2000
#define BIO_SPEEDUP_WRITE 0x4000 /* Resource shortage at upper layers */ #define BIO_SPEEDUP_WRITE 0x4000 /* Resource shortage at upper layers */
#define BIO_SPEEDUP_TRIM 0x8000 /* Resource shortage at upper layers */ #define BIO_SPEEDUP_TRIM 0x8000 /* Resource shortage at upper layers */
#define PRINT_BIO_FLAGS "\20\20speedup_trim\17speedup_write\16exterr" \ #define PRINT_BIO_FLAGS "\20\20speedup_trim\17speedup_write\16exterr" \
"\12swap\7vlist\6transient_mapping\5unmapped" \ "\12swap\7vlist\6transient_mapping\5unmapped" \
"\4ordered\3onqueue\2done\1error" "\4ordered\3onqueue\2done\1error"
Show All 15 Linesstruct bio {
struct cdev *bio_dev; /* Device to do I/O on. */ struct cdev *bio_dev; /* Device to do I/O on. */
struct disk *bio_disk; /* Valid below geom_disk.c only */ struct disk *bio_disk; /* Valid below geom_disk.c only */
off_t bio_offset; /* Offset into file. */ off_t bio_offset; /* Offset into file. */
long bio_bcount; /* Valid bytes in buffer. */ long bio_bcount; /* Valid bytes in buffer. */
caddr_t bio_data; /* Memory, superblocks, indirect etc. */ caddr_t bio_data; /* Memory, superblocks, indirect etc. */
struct vm_page **bio_ma; /* Or unmapped. */ struct vm_page **bio_ma; /* Or unmapped. */
int bio_ma_offset; /* Offset in the first page of bio_ma. */ int bio_ma_offset; /* Offset in the first page of bio_ma. */
int bio_ma_n; /* Number of pages in bio_ma. */ int bio_ma_n; /* Number of pages in bio_ma. */
int bio_error_compat; /* Error for KBI compat on stable/15 */
long bio_resid; /* Remaining I/O in bytes. */ long bio_resid; /* Remaining I/O in bytes. */
void (*bio_done)(struct bio *); void (*bio_done)(struct bio *);
void *bio_driver1; /* Private use by the provider. */ void *bio_driver1; /* Private use by the provider. */
void *bio_driver2; /* Private use by the provider. */ void *bio_driver2; /* Private use by the provider. */
void *bio_caller1; /* Private use by the consumer. */ void *bio_caller1; /* Private use by the consumer. */
void *bio_caller2; /* Private use by the consumer. */ void *bio_caller2; /* Private use by the consumer. */
TAILQ_ENTRY(bio) bio_queue; /* Disksort queue. */ TAILQ_ENTRY(bio) bio_queue; /* Disksort queue. */
const char *bio_attribute; /* Attribute for BIO_[GS]ETATTR */ const char *bio_attribute; /* Attribute for BIO_[GS]ETATTR */
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