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because nfsv3 has the same CREATE semantics as ours, 

we don't have to issue LOOKUP RPCs beforehand.
This commit is contained in:
yamt 2004-05-06 21:58:17 +00:00
parent 812e909997
commit 2a85a8c4fd
1 changed files with 16 additions and 2 deletions
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18
sys/nfs/nfs_vnops.c
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@ -1,4 +1,4 @@
/* $NetBSD: nfs_vnops.c,v 1.191 2004/04/05 10:44:09 yamt Exp $ */
/* $NetBSD: nfs_vnops.c,v 1.192 2004/05/06 21:58:17 yamt Exp $ */
/*
* Copyright (c) 1989, 1993
@ -39,7 +39,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: nfs_vnops.c,v 1.191 2004/04/05 10:44:09 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: nfs_vnops.c,v 1.192 2004/05/06 21:58:17 yamt Exp $");
#include "opt_nfs.h"
#include "opt_uvmhist.h"
@ -917,6 +917,20 @@ nfs_lookup(v)
*vpp = NULLVP;
}
dorpc:
/*
* because nfsv3 has the same CREATE semantics as ours,
* we don't have to perform LOOKUPs beforehand.
*
* XXX ideally we can do the same for nfsv2 in the case of !O_EXCL.
* XXX although we have no way to know if O_EXCL is requested or not.
*/
if (v3 && cnp->cn_nameiop == CREATE && (flags & ISLASTCN)) {
KASSERT(lockparent);
cnp->cn_flags |= SAVENAME;
return (EJUSTRETURN);
}
error = 0;
newvp = NULLVP;
nfsstats.lookupcache_misses++;