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authorPawel Jakub Dawidek <pjd@FreeBSD.org>2004-08-04 21:35:05 +0000
committerPawel Jakub Dawidek <pjd@FreeBSD.org>2004-08-04 21:35:05 +0000
commit51385a3c0085796ea4b8d6883c03e0735be207b6 (patch)
treec0a8d5c029b11ea1effeb49bac7f946df7e11fc7 /sys/sys/bio.h
parent29fe871daef9267c2b84fef43ed30893925adc67 (diff)
downloadsrc-51385a3c0085796ea4b8d6883c03e0735be207b6.tar.gz
src-51385a3c0085796ea4b8d6883c03e0735be207b6.zip
- Add two fields to bio structure: 'bio_cflags' which can be used by
consumer and 'bio_pflags' which can be used by provider. - Remove BIO_FLAG1 and BIO_FLAG2 flags. From now on new fields should be used for internal flags. - Update g_bio(9) manual page. - Update some comments. - Update GEOM_MIRROR, which was the only one using BIO_FLAGs. Idea from: phk Reviewed by: phk
Notes
Notes: svn path=/head/; revision=133142
Diffstat (limited to 'sys/sys/bio.h')
-rw-r--r--sys/sys/bio.h32
1 files changed, 16 insertions, 16 deletions
diff --git a/sys/sys/bio.h b/sys/sys/bio.h
index be9b20e02053..33ae4e7a376f 100644
--- a/sys/sys/bio.h
+++ b/sys/sys/bio.h
@@ -49,20 +49,22 @@ typedef void bio_task_t(void *);
* The bio structure describes an I/O operation in the kernel.
*/
struct bio {
- u_int bio_cmd; /* I/O operation. */
+ uint8_t bio_cmd; /* I/O operation. */
+ uint8_t bio_flags; /* General flags. */
+ uint8_t bio_cflags; /* Private use by the consumer. */
+ uint8_t bio_pflags; /* Private use by the provider. */
struct cdev *bio_dev; /* Device to do I/O on. */
struct disk *bio_disk; /* Valid below geom_disk.c only */
off_t bio_offset; /* Offset into file. */
long bio_bcount; /* Valid bytes in buffer. */
caddr_t bio_data; /* Memory, superblocks, indirect etc. */
- u_int bio_flags; /* BIO_ flags. */
int bio_error; /* Errno for BIO_ERROR. */
long bio_resid; /* Remaining I/0 in bytes. */
void (*bio_done)(struct bio *);
- void *bio_driver1; /* Private use by the callee. */
- void *bio_driver2; /* Private use by the callee. */
- void *bio_caller1; /* Private use by the caller. */
- void *bio_caller2; /* Private use by the caller. */
+ void *bio_driver1; /* Private use by the provider. */
+ void *bio_driver2; /* Private use by the provider. */
+ void *bio_caller1; /* Private use by the consumer. */
+ void *bio_caller2; /* Private use by the consumer. */
TAILQ_ENTRY(bio) bio_queue; /* Disksort queue. */
const char *bio_attribute; /* Attribute for BIO_[GS]ETATTR */
struct g_consumer *bio_from; /* GEOM linkage */
@@ -82,18 +84,16 @@ struct bio {
};
/* bio_cmd */
-#define BIO_READ 0x00000001
-#define BIO_WRITE 0x00000002
-#define BIO_DELETE 0x00000004
-#define BIO_GETATTR 0x00000008
-#define BIO_CMD1 0x40000000 /* Available for local hacks */
-#define BIO_CMD2 0x80000000 /* Available for local hacks */
+#define BIO_READ 0x01
+#define BIO_WRITE 0x02
+#define BIO_DELETE 0x04
+#define BIO_GETATTR 0x08
+#define BIO_CMD1 0x40 /* Available for local hacks */
+#define BIO_CMD2 0x80 /* Available for local hacks */
/* bio_flags */
-#define BIO_ERROR 0x00000001
-#define BIO_DONE 0x00000004
-#define BIO_FLAG2 0x40000000 /* Available for local hacks */
-#define BIO_FLAG1 0x80000000 /* Available for local hacks */
+#define BIO_ERROR 0x01
+#define BIO_DONE 0x02
#ifdef _KERNEL