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read_drive: Remove references to vp->v_lastr, which is going away. 

Reviewed-by:	dillon
This commit is contained in:
Greg Lehey 1999-08-26 03:27:21 +00:00
parent 35b5051ab9
commit 4e72079195
1 changed files with 3 additions and 16 deletions
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19
sys/dev/vinum/vinumio.c
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@ -246,9 +246,8 @@ remove_drive(int driveno)
}
/*
* Read data from a drive
*
* Return error number
* Read data from a drive.
* Return error number.
*/
int
read_drive(struct drive *drive, void *buf, size_t length, off_t offset)
@ -282,19 +281,7 @@ read_drive(struct drive *drive, void *buf, size_t length, off_t offset)
count = min((unsigned) (drive->blocksize - blockoff), /* amount to transfer in this block */
uio.uio_resid);
if (drive->vp->v_lastr + bscale == blocknum) { /* did our last read finish in this block? */
nextbn = blocknum + bscale; /* note the end of the transfer */
error = breadn(drive->vp, /* and read with read-ahead */
blocknum,
(int) drive->blocksize,
&nextbn,
(int *) &drive->blocksize,
1,
NOCRED,
&bp);
} else /* random read: just read this block */
error = bread(drive->vp, blocknum, (int) drive->blocksize, NOCRED, &bp);
drive->vp->v_lastr = blocknum; /* note the last block we read */
error = bread(drive->vp, blocknum, (int) drive->blocksize, NOCRED, &bp);
count = min(count, drive->blocksize - bp->b_resid);
if (error) {
brelse(bp);