From: Kinglong Mee <kinglongmee@gmail.com>
Date: Fri, 13 Jun 2014 09:32:42 +0000 (+0800)
Subject: NFSD: fix bug for readdir of pseudofs
X-Git-Tag: v4.14-rc1~7332^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f41c5ad2ff2657978a9712b9ea80cd812a7da2b0;p=platform%2Fkernel%2Flinux-rpi.git

NFSD: fix bug for readdir of pseudofs

Commit 561f0ed498ca (nfsd4: allow large readdirs) introduces a bug
about readdir the root of pseudofs.

Call xdr_truncate_encode() revert encoded name when skipping.

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 2d305a1..83baf2b 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2687,6 +2687,7 @@ nfsd4_encode_dirent(void *ccdv, const char *name, int namlen,
 		nfserr = nfserr_toosmall;
 		goto fail;
 	case nfserr_noent:
+		xdr_truncate_encode(xdr, start_offset);
 		goto skip_entry;
 	default:
 		/*