[PATCH] nfsd: fix spurious error return from nfsd_create in async case

["J. Bruce Fields" <bfields@fieldses.org>]

Commit 6264d69d7df654ca64f625e9409189a0e50734e9 modified the
nfsd_create() error handling in such a way that nfsd_create will usually
return nfserr_perm even when succesful, if the export has the async
export option.
    
This introduced a regression that could cause mkdir() to always return a
permissions error, even though the directory in question was actually
succesfully created.
    
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 1a7ad8c..bb4d926 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1177,7 +1177,7 @@ nfsd_create(struct svc_rqst *rqstp, stru
 	/*
 	 * Get the dir op function pointer.
 	 */
-	err = nfserr_perm;
+	err = 0;
 	switch (type) {
 	case S_IFREG:
 		host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);

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