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protect bt_poolcache by splvm because it's shared among all arenas 

including ones which can be used in interrupt context.
PR/35042 from Manuel Bouyer.
This commit is contained in:
yamt 2006-11-12 22:28:17 +00:00
parent 57c0199dcf
commit ec585a4e4d
1 changed files with 10 additions and 2 deletions
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12
sys/kern/subr_vmem.c
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@ -1,4 +1,4 @@
/* $NetBSD: subr_vmem.c,v 1.20 2006/11/09 10:08:53 yamt Exp $ */
/* $NetBSD: subr_vmem.c,v 1.21 2006/11/12 22:28:17 yamt Exp $ */
/*-
* Copyright (c)2006 YAMAMOTO Takashi,
@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: subr_vmem.c,v 1.20 2006/11/09 10:08:53 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: subr_vmem.c,v 1.21 2006/11/12 22:28:17 yamt Exp $");
#define VMEM_DEBUG
#if defined(_KERNEL)
@ -233,9 +233,13 @@ bt_alloc(vmem_t *vm, vm_flag_t flags)
bt_t *bt;
#if defined(_KERNEL)
int s;
/* XXX bootstrap */
s = splvm();
bt = pool_cache_get(&bt_poolcache,
(flags & VM_SLEEP) != 0 ? PR_WAITOK : PR_NOWAIT);
splx(s);
#else /* defined(_KERNEL) */
bt = malloc(sizeof *bt);
#endif /* defined(_KERNEL) */
@ -248,8 +252,12 @@ bt_free(vmem_t *vm, bt_t *bt)
{
#if defined(_KERNEL)
int s;
/* XXX bootstrap */
s = splvm();
pool_cache_put(&bt_poolcache, bt);
splx(s);
#else /* defined(_KERNEL) */
free(bt);
#endif /* defined(_KERNEL) */