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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-03-17 23:52:00 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-03-25 20:04:10 +0400
commit9b20614988199fb03580b335a28250922e902098 (patch)
treeeb8020ff76d93017af31f10dbdd4b5d929dd4369 /fs/nfs/nfs4xdr.c
parent8c86899f62738b8a22ca3a5f060e269b92e5545a (diff)
downloadlinux-9b20614988199fb03580b335a28250922e902098.tar.xz
NFSv4: The stateid must remain the same for replayed RPC calls
If we replay a READ or WRITE call, we should not be changing the stateid. Currently, we may end up doing so, because the stateid is only selected at xdr encode time. This patch ensures that we select the stateid after we get an NFSv4.1 session slot, and that we keep that same stateid across retries. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4xdr.c')
-rw-r--r--fs/nfs/nfs4xdr.c28
1 files changed, 2 insertions, 26 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index e3edda554ac7..9d328777b4c1 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1506,35 +1506,12 @@ static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
}
-static void encode_open_stateid(struct xdr_stream *xdr,
- const struct nfs_open_context *ctx,
- const struct nfs_lock_context *l_ctx,
- fmode_t fmode,
- int zero_seqid)
-{
- nfs4_stateid stateid;
-
- if (ctx->state != NULL) {
- const struct nfs_lockowner *lockowner = NULL;
-
- if (l_ctx != NULL)
- lockowner = &l_ctx->lockowner;
- nfs4_select_rw_stateid(&stateid, ctx->state,
- fmode, lockowner);
- if (zero_seqid)
- stateid.seqid = 0;
- encode_nfs4_stateid(xdr, &stateid);
- } else
- encode_nfs4_stateid(xdr, &zero_stateid);
-}
-
static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
- encode_open_stateid(xdr, args->context, args->lock_context,
- FMODE_READ, hdr->minorversion);
+ encode_nfs4_stateid(xdr, &args->stateid);
p = reserve_space(xdr, 12);
p = xdr_encode_hyper(p, args->offset);
@@ -1670,8 +1647,7 @@ static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *arg
__be32 *p;
encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
- encode_open_stateid(xdr, args->context, args->lock_context,
- FMODE_WRITE, hdr->minorversion);
+ encode_nfs4_stateid(xdr, &args->stateid);
p = reserve_space(xdr, 16);
p = xdr_encode_hyper(p, args->offset);