diff options
| author | dyson <dyson@FreeBSD.org> | 1996-12-29 02:45:28 +0000 |
|---|---|---|
| committer | dyson <dyson@FreeBSD.org> | 1996-12-29 02:45:28 +0000 |
| commit | 04a0ee9a2a23ea1925b6625e3268da60ccc7944b (patch) | |
| tree | 0be85582a1c640271ed7ce19fc19c0c85527cb9c /sys/isofs | |
| parent | baa03b956c25159833733ce567a847c13e9bd032 (diff) | |
| download | FreeBSD-src-04a0ee9a2a23ea1925b6625e3268da60ccc7944b.zip FreeBSD-src-04a0ee9a2a23ea1925b6625e3268da60ccc7944b.tar.gz | |
This commit is the embodiment of some VFS read clustering improvements.
Firstly, now our read-ahead clustering is on a file descriptor basis and not
on a per-vnode basis. This will allow multiple processes reading the
same file to take advantage of read-ahead clustering. Secondly, there
previously was a problem with large reads still using the ramp-up
algorithm. Of course, that was bogus, and now we read the entire
"chunk" off of the disk in one operation. The read-ahead clustering
algorithm should use less CPU than the previous also (I hope :-)).
NOTE: THAT LKMS MUST BE REBUILT!!!
Diffstat (limited to 'sys/isofs')
| -rw-r--r-- | sys/isofs/cd9660/cd9660_vnops.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/isofs/cd9660/cd9660_vnops.c b/sys/isofs/cd9660/cd9660_vnops.c index 8ac9cd4..e48ddce 100644 --- a/sys/isofs/cd9660/cd9660_vnops.c +++ b/sys/isofs/cd9660/cd9660_vnops.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)cd9660_vnops.c 8.3 (Berkeley) 1/23/94 - * $Id: cd9660_vnops.c,v 1.26 1996/09/20 05:51:12 nate Exp $ + * $Id: cd9660_vnops.c,v 1.27 1996/10/20 21:01:43 alex Exp $ */ #include <sys/param.h> @@ -342,7 +342,8 @@ cd9660_read(ap) if (doclusterread) { if (iso_lblktosize(imp, rablock) <= ip->i_size) error = cluster_read(vp, ip->i_size, - lbn, size, NOCRED, &bp); + lbn, size, NOCRED, uio->uio_resid, + (ap->a_ioflag >> 16), &bp); else error = bread(vp, lbn, size, NOCRED, &bp); } else { |
