kNFSd - 1 of 4 - Convert error status for failed lookup("..") properly.

Linus,
Here are 4 patches to knfsd that I believe are appropriate for pre 2.6.0. The first two are simple bug fixes.
The third is the largest and need to change a little bit of infrastructure
to avoid ignoring a possible NULL return from kmalloc.
The fourth extends dnotify functionality w.r.t. nfsd file access.

Thanks,
NeilBrown

### Comments for ChangeSet

We weren't converting the -E* error code to an nfserr_* error code as we should.

----------- Diffstat output ------------

 ./fs/nfsd/vfs.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff ./fs/nfsd/vfs.c~current~ ./fs/nfsd/vfs.c
@@ -173,7 +173,7 @@ nfsd_lookup(struct svc_rqst *rqstp, stru
 				err = PTR_ERR(exp2);
 				dput(dentry);
 				mntput(mnt);
-				goto out;
+				goto out_nfserr;
 			}
 			if (!exp2) {
 				dput(dentry);

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