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We are required to hold uvm.swap_data_lock here too.

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elad 2006-12-02 03:23:38 +00:00
parent 432c309931
commit cbcd623862
1 changed files with 4 additions and 2 deletions
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6
sys/uvm/uvm_swap.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_swap.c,v 1.113 2006/12/01 16:06:09 elad Exp $ */
/* $NetBSD: uvm_swap.c,v 1.114 2006/12/02 03:23:38 elad Exp $ */
/*
* Copyright (c) 1995, 1996, 1997 Matthew R. Green
@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_swap.c,v 1.113 2006/12/01 16:06:09 elad Exp $");
__KERNEL_RCSID(0, "$NetBSD: uvm_swap.c,v 1.114 2006/12/02 03:23:38 elad Exp $");
#include "fs_nfs.h"
#include "opt_uvmhist.h"
@ -382,7 +382,9 @@ uvm_is_swap_device(struct vnode *vp)
boolean_t r;
lockmgr(&swap_syscall_lock, LK_EXCLUSIVE, NULL);
simple_lock(&uvm.swap_data_lock);
r = (swaplist_find(vp, 0) != NULL) ? TRUE : FALSE;
simple_unlock(&uvm.swap_data_lock);
lockmgr(&swap_syscall_lock, LK_RELEASE, NULL);
return (r);