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Add a bio_disk pointer for use between geom_disk and the device drivers.

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This commit is contained in:
Poul-Henning Kamp 2003-02-02 11:59:54 +00:00
parent ecc575bfaa
commit ffa918814d
2 changed files with 4 additions and 2 deletions
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4
sys/geom/geom_disk.c
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@ -150,7 +150,7 @@ g_disk_done(struct bio *bp)
{
struct disk *dp;
dp = bp->bio_caller1;
dp = bp->bio_disk;
bp->bio_completed = bp->bio_length - bp->bio_resid;
if (!(dp->d_flags & DISKFLAG_NOGIANT)) {
DROP_GIANT();
@ -188,7 +188,7 @@ g_disk_start(struct bio *bp)
bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize;
bp2->bio_bcount = bp2->bio_length;
bp2->bio_dev = dev;
bp2->bio_caller1 = dp;
bp2->bio_disk = dp;
g_disk_lock_giant(dp);
dp->d_strategy(bp2);
g_disk_unlock_giant(dp);

2
sys/sys/bio.h
View file

@ -44,12 +44,14 @@
#include <sys/queue.h>
struct disk;
/*
* The bio structure describes an I/O operation in the kernel.
*/
struct bio {
u_int bio_cmd; /* I/O operation. */
dev_t bio_dev; /* Device to do I/O on. */
struct disk *bio_disk; /* Valid below geom_disk.c only */
daddr_t bio_blkno; /* Underlying physical block number. */
off_t bio_offset; /* Offset into file. */
long bio_bcount; /* Valid bytes in buffer. */