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Compensate v_numoutput & nestbuf for lfs's rather peculiar I/O habits.

This commit is contained in:
pooka 2009-08-05 15:39:57 +00:00
parent ab159a84fa
commit b828513eea
1 changed files with 11 additions and 2 deletions
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13
sys/ufs/lfs/lfs_vfsops.c
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@ -1,4 +1,4 @@
/* $NetBSD: lfs_vfsops.c,v 1.276 2009/08/05 14:37:01 pooka Exp $ */ /* $NetBSD: lfs_vfsops.c,v 1.277 2009/08/05 15:39:57 pooka Exp $ */
/*- /*-
* Copyright (c) 1999, 2000, 2001, 2002, 2003, 2007, 2007 * Copyright (c) 1999, 2000, 2001, 2002, 2003, 2007, 2007
@ -61,7 +61,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lfs_vfsops.c,v 1.276 2009/08/05 14:37:01 pooka Exp $"); __KERNEL_RCSID(0, "$NetBSD: lfs_vfsops.c,v 1.277 2009/08/05 15:39:57 pooka Exp $");
#if defined(_KERNEL_OPT) #if defined(_KERNEL_OPT)
#include "opt_lfs.h" #include "opt_lfs.h"
@ -1756,6 +1756,15 @@ lfs_gop_write(struct vnode *vp, struct vm_page **pgs, int npages,
* converted this to use nestiobuf --pooka * converted this to use nestiobuf --pooka
*/ */
bp->b_flags &= ~B_ASYNC; bp->b_flags &= ~B_ASYNC;
/*
* LFS uses VOP_BWRITE instead of VOP_STRATEGY.
* Therefore biodone doesn't get called for
* the buffer. Therefore decrement the output
* counter that nestiobuf_setup() incremented.
*/
mutex_enter(&vp->v_interlock);
vp->v_numoutput--;
mutex_exit(&vp->v_interlock);
} }
/* XXX This is silly ... is this necessary? */ /* XXX This is silly ... is this necessary? */