[PATCH Bakeathon 2/2] NFSv4.1: File layout only supports whole file layouts

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From: Andy Adamson <andros@xxxxxxxxxx>

Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
---
 fs/nfs/nfs4filelayout.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 3a8bd92..ada6ce1 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -427,6 +427,12 @@ filelayout_check_layout(struct pnfs_layout_hdr *lo,
 
 	dprintk("--> %s\n", __func__);
 
+	if (fl->generic_hdr.pls_range.offset != 0 ||
+	    fl->generic_hdr.pls_range.length != NFS4_MAX_UINT64) {
+		dprintk("%s Only whole file layouts supported. Use MDS.\n",
+			__func__);
+		goto out;
+	}
 	if (fl->pattern_offset > lgr->range.offset) {
 		dprintk("%s pattern_offset %lld too large\n",
 				__func__, fl->pattern_offset);
-- 
1.7.3.1

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