Clone bio versions of certain bits of infrastructure:

        devstat_end_transaction_bio()
        bioq_* versions of bufq_* incl bioqdisksort()
the corresponding "buf" versions will disappear when no longer used.

Move b_offset, b_data and b_bcount to struct bio.

Add BIO_FORMAT as a hack for fd.c etc.

We are now largely ready to start converting drivers to use struct
bio instead of struct buf.

1 files changed, 17 insertions, 0 deletions

diff --git a/sys/kern/subr_devstat.c b/sys/kern/subr_devstat.c
index 81740ed..c86d16b 100644
--- a/sys/kern/subr_devstat.c
+++ b/sys/kern/subr_devstat.c
@@ -245,6 +245,23 @@ devstat_end_transaction_buf(struct devstat *ds, struct buf *bp)
 				DEVSTAT_TAG_ORDERED : DEVSTAT_TAG_SIMPLE, flg);
 }
 
+void
+devstat_end_transaction_bio(struct devstat *ds, struct bio *bp)
+{
+	devstat_trans_flags flg;
+
+	if (bp->bio_cmd == BIO_DELETE)
+		flg = DEVSTAT_FREE;
+	else if (bp->bio_cmd == BIO_READ)
+		flg = DEVSTAT_READ;
+	else
+		flg = DEVSTAT_WRITE;
+
+	devstat_end_transaction(ds, bp->bio_bcount - bp->bio_resid,
+				(bp->bio_flags & BIO_ORDERED) ?
+				DEVSTAT_TAG_ORDERED : DEVSTAT_TAG_SIMPLE, flg);
+}
+
 /*
  * This is the sysctl handler for the devstat package.  The data pushed out
  * on the kern.devstat.all sysctl variable consists of the current devstat