diff options
| author | dyson <dyson@FreeBSD.org> | 1998-02-23 08:22:48 +0000 |
|---|---|---|
| committer | dyson <dyson@FreeBSD.org> | 1998-02-23 08:22:48 +0000 |
| commit | c4e82fbab0e2810b076cfdd1462d5c086e1c442b (patch) | |
| tree | 32edadf5a10589c683a222e603fe1062a64fbfb1 /sys/vm/vm_swap.c | |
| parent | b77de226503076b55efebae9b92333cd8c2535d9 (diff) | |
| download | FreeBSD-src-c4e82fbab0e2810b076cfdd1462d5c086e1c442b.zip FreeBSD-src-c4e82fbab0e2810b076cfdd1462d5c086e1c442b.tar.gz | |
Significantly improve the efficiency of the swap pager, which appears to
have declined due to code-rot over time. The swap pager rundown code
has been clean-up, and unneeded wakeups removed. Lots of splbio's
are changed to splvm's. Also, set the dynamic tunables for the
pageout daemon to be more sane for larger systems (thereby decreasing
the daemon overheadla.)
Diffstat (limited to 'sys/vm/vm_swap.c')
| -rw-r--r-- | sys/vm/vm_swap.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/vm/vm_swap.c b/sys/vm/vm_swap.c index 84fb5d2..48e6aa6 100644 --- a/sys/vm/vm_swap.c +++ b/sys/vm/vm_swap.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)vm_swap.c 8.5 (Berkeley) 2/17/94 - * $Id: vm_swap.c,v 1.51 1998/01/25 04:13:25 eivind Exp $ + * $Id: vm_swap.c,v 1.52 1998/02/19 12:15:06 msmith Exp $ */ #include "opt_devfs.h" @@ -105,7 +105,7 @@ static void swstrategy(bp) register struct buf *bp; { - int sz, off, seg, index; + int s, sz, off, seg, index; register struct swdevt *sp; struct vnode *vp; @@ -139,6 +139,7 @@ swstrategy(bp) return; } vhold(sp->sw_vp); + s = splvm(); if ((bp->b_flags & B_READ) == 0) { vp = bp->b_vp; if (vp) { @@ -152,6 +153,7 @@ swstrategy(bp) } if (bp->b_vp != NULL) pbrelvp(bp); + splx(s); bp->b_vp = sp->sw_vp; VOP_STRATEGY(bp); } |
