Author: rmacklem
Date: Fri Jul 17 19:38:07 2009
New Revision: 195744
URL: http://svn.freebsd.org/changeset/base/195744
Log:
Patch the regular nfs client in a manner analagous to
r195704 for the experimental client. The patch avoids calling vn_lock()
for the case where nfs_nget() has acquired the same vnode as dvp,
since nfs_nget() has already locked the vnode.
Reviewed by: kib, jhb
Approved by: re (kensmith), kib (mentor)
Modified:
head/sys/nfsclient/nfs_vnops.c
Modified: head/sys/nfsclient/nfs_vnops.c
==============================================================================
--- head/sys/nfsclient/nfs_vnops.c Fri Jul 17 19:32:04 2009
(r195743)
+++ head/sys/nfsclient/nfs_vnops.c Fri Jul 17 19:38:07 2009
(r195744)
@@ -1061,7 +1061,8 @@ nfs_lookup(struct vop_lookup_args *ap)
if (error == 0)
newvp = NFSTOV(np);
vfs_unbusy(mp);
- vn_lock(dvp, ltype | LK_RETRY);
+ if (newvp != dvp)
+ vn_lock(dvp, ltype | LK_RETRY);
if (dvp->v_iflag & VI_DOOMED) {
if (error == 0) {
if (newvp == dvp)
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