[src/trunk]: src/sys/ufs/ufs Add write-behind to lfs_write().

[perseant <perseant%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3fa0b812a0d1
branches:  trunk
changeset: 544239:3fa0b812a0d1
user:      perseant <perseant%NetBSD.org@localhost>
date:      Sat Mar 15 07:24:37 2003 +0000

description:
Add write-behind to lfs_write().

diffstat:

 sys/ufs/ufs/ufs_readwrite.c |  14 +++++++++++---
 1 files changed, 11 insertions(+), 3 deletions(-)

diffs (38 lines):

diff -r 2f5949b34576 -r 3fa0b812a0d1 sys/ufs/ufs/ufs_readwrite.c
--- a/sys/ufs/ufs/ufs_readwrite.c       Sat Mar 15 07:22:46 2003 +0000
+++ b/sys/ufs/ufs/ufs_readwrite.c       Sat Mar 15 07:24:37 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ufs_readwrite.c,v 1.49 2003/03/08 21:52:57 perseant Exp $      */
+/*     $NetBSD: ufs_readwrite.c,v 1.50 2003/03/15 07:24:37 perseant Exp $      */
 
 /*-
  * Copyright (c) 1993
@@ -36,7 +36,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(1, "$NetBSD: ufs_readwrite.c,v 1.49 2003/03/08 21:52:57 perseant Exp $");
+__KERNEL_RCSID(1, "$NetBSD: ufs_readwrite.c,v 1.50 2003/03/15 07:24:37 perseant Exp $");
 
 #ifdef LFS_READWRITE
 #define        BLKSIZE(a, b, c)        blksize(a, b, c)
@@ -280,10 +280,18 @@
        bsize = fs->fs_bsize;
        error = 0;
 
+       usepc = vp->v_type == VREG;
 #ifdef LFS_READWRITE
        async = TRUE;
+
+       /* Account writes.  This overcounts if pages are already dirty. */
+       if (usepc) {
+               simple_lock(&lfs_subsys_lock);
+               lfs_subsys_pages += round_page(uio->uio_resid) >> PAGE_SHIFT;
+               simple_unlock(&lfs_subsys_lock);
+       }
+       lfs_check(vp, LFS_UNUSED_LBN, 0);
 #endif /* !LFS_READWRITE */
-       usepc = vp->v_type == VREG;
        if (!usepc) {
                goto bcache;
        }