From 3a6bb738792500e8b4534c0350c13a132bac0492 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 9 Jun 2015 19:43:57 -0400 Subject: nfs: convert setclientid and exchange_id encoders to use clp->cl_owner_id ...instead of buffers that are part of their arg structs. We already hold a reference to the client, so we might as well use the allocated buffer. In the event that we can't allocate the clp->cl_owner_id, then just return -ENOMEM. Note too that we switch from a GFP_KERNEL allocation here to GFP_NOFS. It's possible we could end up trying to do a SETCLIENTID or EXCHANGE_ID in order to reclaim some memory, and the GFP_KERNEL allocations in the existing code could cause recursion back into NFS reclaim. Signed-off-by: Jeff Layton Signed-off-by: Trond Myklebust --- fs/nfs/nfs4xdr.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'fs/nfs/nfs4xdr.c') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 0aea97841d30..f58e8a979397 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1667,13 +1667,14 @@ static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclie encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); encode_nfs4_verifier(xdr, setclientid->sc_verifier); - encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); + encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id), + setclientid->sc_clnt->cl_owner_id); p = reserve_space(xdr, 4); *p = cpu_to_be32(setclientid->sc_prog); encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); p = reserve_space(xdr, 4); - *p = cpu_to_be32(setclientid->sc_cb_ident); + *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident); } static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) @@ -1747,7 +1748,8 @@ static void encode_exchange_id(struct xdr_stream *xdr, encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); encode_nfs4_verifier(xdr, args->verifier); - encode_string(xdr, args->id_len, args->id); + encode_string(xdr, strlen(args->client->cl_owner_id), + args->client->cl_owner_id); encode_uint32(xdr, args->flags); encode_uint32(xdr, args->state_protect.how); -- cgit v1.2.3-59-g8ed1b