From fccdafa51de000f81833cbaa7aba7e592a9130d1 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 30 Nov 2022 13:15:26 -0500 Subject: [PATCH] NFSv4.2: Fix up READ_PLUS alignment [ Upstream commit f8527028a7e52da884055c401abc04e0b0c84285 ] Assume that the first segment will be a DATA segment, and place the data directly into the xdr pages so it doesn't need to be shifted. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust Stable-dep-of: 8d18f6c5bb86 ("NFSv4.2: Fix READ_PLUS size calculations") Signed-off-by: Sasha Levin --- fs/nfs/nfs42xdr.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/fs/nfs/nfs42xdr.c b/fs/nfs/nfs42xdr.c index ae034a1..ef3b150 100644 --- a/fs/nfs/nfs42xdr.c +++ b/fs/nfs/nfs42xdr.c @@ -47,13 +47,14 @@ #define decode_deallocate_maxsz (op_decode_hdr_maxsz) #define encode_read_plus_maxsz (op_encode_hdr_maxsz + \ encode_stateid_maxsz + 3) -#define NFS42_READ_PLUS_SEGMENT_SIZE (1 /* data_content4 */ + \ +#define NFS42_READ_PLUS_DATA_SEGMENT_SIZE \ + (1 /* data_content4 */ + \ 2 /* data_info4.di_offset */ + \ - 2 /* data_info4.di_length */) + 1 /* data_info4.di_length */) #define decode_read_plus_maxsz (op_decode_hdr_maxsz + \ 1 /* rpr_eof */ + \ 1 /* rpr_contents count */ + \ - 2 * NFS42_READ_PLUS_SEGMENT_SIZE) + NFS42_READ_PLUS_DATA_SEGMENT_SIZE) #define encode_seek_maxsz (op_encode_hdr_maxsz + \ encode_stateid_maxsz + \ 2 /* offset */ + \ -- 2.7.4