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Avoid some 64bit divides.

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This commit is contained in:
Poul-Henning Kamp 1995-10-06 09:47:58 +00:00
parent e83e1865c0
commit b67501dcda
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=11262
2 changed files with 10 additions and 10 deletions
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10
sys/fs/specfs/spec_vnops.c
View file

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)spec_vnops.c 8.6 (Berkeley) 4/9/94
* $Id: spec_vnops.c,v 1.13 1995/07/29 11:40:31 bde Exp $
* $Id: spec_vnops.c,v 1.14 1995/09/04 00:20:37 dyson Exp $
*/
#include <sys/param.h>
@ -251,9 +251,9 @@ spec_read(ap)
dpart.part->p_fstype == FS_BSDFFS &&
dpart.part->p_frag != 0 && dpart.part->p_fsize != 0)
bsize = dpart.part->p_frag * dpart.part->p_fsize;
bscale = bsize / DEV_BSIZE;
bscale = bsize >> DEV_BSHIFT;
do {
bn = (uio->uio_offset / DEV_BSIZE) &~ (bscale - 1);
bn = (uio->uio_offset >> DEV_BSHIFT) &~ (bscale - 1);
on = uio->uio_offset % bsize;
n = min((unsigned)(bsize - on), uio->uio_resid);
if (vp->v_lastr + bscale == bn) {
@ -331,9 +331,9 @@ spec_write(ap)
bsize = dpart.part->p_frag *
dpart.part->p_fsize;
}
blkmask = (bsize / DEV_BSIZE) - 1;
blkmask = (bsize >> DEV_BSHIFT) - 1;
do {
bn = (uio->uio_offset / DEV_BSIZE) &~ blkmask;
bn = (uio->uio_offset >> DEV_BSHIFT) &~ blkmask;
on = uio->uio_offset % bsize;
n = min((unsigned)(bsize - on), uio->uio_resid);
if (n == bsize)

10
sys/miscfs/specfs/spec_vnops.c
View file

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)spec_vnops.c 8.6 (Berkeley) 4/9/94
* $Id: spec_vnops.c,v 1.13 1995/07/29 11:40:31 bde Exp $
* $Id: spec_vnops.c,v 1.14 1995/09/04 00:20:37 dyson Exp $
*/
#include <sys/param.h>
@ -251,9 +251,9 @@ spec_read(ap)
dpart.part->p_fstype == FS_BSDFFS &&
dpart.part->p_frag != 0 && dpart.part->p_fsize != 0)
bsize = dpart.part->p_frag * dpart.part->p_fsize;
bscale = bsize / DEV_BSIZE;
bscale = bsize >> DEV_BSHIFT;
do {
bn = (uio->uio_offset / DEV_BSIZE) &~ (bscale - 1);
bn = (uio->uio_offset >> DEV_BSHIFT) &~ (bscale - 1);
on = uio->uio_offset % bsize;
n = min((unsigned)(bsize - on), uio->uio_resid);
if (vp->v_lastr + bscale == bn) {
@ -331,9 +331,9 @@ spec_write(ap)
bsize = dpart.part->p_frag *
dpart.part->p_fsize;
}
blkmask = (bsize / DEV_BSIZE) - 1;
blkmask = (bsize >> DEV_BSHIFT) - 1;
do {
bn = (uio->uio_offset / DEV_BSIZE) &~ blkmask;
bn = (uio->uio_offset >> DEV_BSHIFT) &~ blkmask;
on = uio->uio_offset % bsize;
n = min((unsigned)(bsize - on), uio->uio_resid);
if (n == bsize)