From d5d5c304b13bc3cade13b8a1b5833c8b3a0975f1 Mon Sep 17 00:00:00 2001 From: Kinglong Mee Date: Wed, 9 Jul 2014 21:51:27 +0800 Subject: [PATCH] NFSD: Fix bad checking of space for padding in splice read Note that the caller has already reserved space for count and eof, so xdr->p has already moved past them, only the padding remains. Signed-off-by: Kinglong Mee Fixes dc97618ddd (nfsd4: separate splice and readv cases) Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4xdr.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 1ad7bd4e346fc..01023a5951632 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -3072,11 +3072,8 @@ static __be32 nfsd4_encode_splice_read( __be32 nfserr; __be32 *p = xdr->p - 2; - /* - * Don't inline pages unless we know there's room for eof, - * count, and possible padding: - */ - if (xdr->end - xdr->p < 3) + /* Make sure there will be room for padding if needed */ + if (xdr->end - xdr->p < 1) return nfserr_resource; nfserr = nfsd_splice_read(read->rd_rqstp, file,