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getcleanvnode: fix spurious ENFILE.

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try vnode_hold_list if none of vnodes on vnode_free_list are re-usable.
This commit is contained in:
yamt 2004-06-19 06:20:02 +00:00
parent 9ba27abaf6
commit 79dd9743cd
1 changed files with 10 additions and 5 deletions
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15
sys/kern/vfs_subr.c
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@ -1,4 +1,4 @@
/* $NetBSD: vfs_subr.c,v 1.228 2004/06/16 12:35:51 yamt Exp $ */
/* $NetBSD: vfs_subr.c,v 1.229 2004/06/19 06:20:02 yamt Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
@ -78,7 +78,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vfs_subr.c,v 1.228 2004/06/16 12:35:51 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: vfs_subr.c,v 1.229 2004/06/19 06:20:02 yamt Exp $");
#include "opt_inet.h"
#include "opt_ddb.h"
@ -239,9 +239,10 @@ getcleanvnode(p)
struct freelst *listhd;
LOCK_ASSERT(simple_lock_held(&vnode_free_list_slock));
if ((vp = TAILQ_FIRST(listhd = &vnode_free_list)) == NULL)
vp = TAILQ_FIRST(listhd = &vnode_hold_list);
for (; vp != NULL; vp = TAILQ_NEXT(vp, v_freelist)) {
listhd = &vnode_free_list;
try_nextlist:
TAILQ_FOREACH(vp, listhd, v_freelist) {
if (!simple_lock_try(&vp->v_interlock))
continue;
/*
@ -258,6 +259,10 @@ getcleanvnode(p)
}
if (vp == NULLVP) {
if (listhd == &vnode_free_list) {
listhd = &vnode_hold_list;
goto try_nextlist;
}
simple_unlock(&vnode_free_list_slock);
return NULLVP;
}