nfsd: remove nfsd4_callback.cb_op
We can always get at the private data by using container_of, no need for
a void pointer. Also introduce a little to_delegation helper to avoid
opencoding the container_of everywhere.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index fc07084..06e07e1 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -55,6 +55,9 @@
NFSPROC4_CLNT_CB_SEQUENCE,
};
+#define to_delegation(cb) \
+ container_of(cb, struct nfs4_delegation, dl_recall)
+
struct nfs4_cb_compound_hdr {
/* args */
u32 ident; /* minorversion 0 only */
@@ -494,7 +497,7 @@
static void nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfsd4_callback *cb)
{
- const struct nfs4_delegation *args = cb->cb_op;
+ const struct nfs4_delegation *dp = to_delegation(cb);
struct nfs4_cb_compound_hdr hdr = {
.ident = cb->cb_clp->cl_cb_ident,
.minorversion = cb->cb_minorversion,
@@ -502,7 +505,7 @@
encode_cb_compound4args(xdr, &hdr);
encode_cb_sequence4args(xdr, cb, &hdr);
- encode_cb_recall4args(xdr, args, &hdr);
+ encode_cb_recall4args(xdr, dp, &hdr);
encode_cb_nops(&hdr);
}
@@ -755,7 +758,6 @@
{
struct nfsd4_callback *cb = &clp->cl_cb_null;
- cb->cb_op = NULL;
cb->cb_clp = clp;
cb->cb_msg.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL];
@@ -850,11 +852,10 @@
}
}
-
static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
{
struct nfsd4_callback *cb = calldata;
- struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
+ struct nfs4_delegation *dp = to_delegation(cb);
struct nfs4_client *clp = cb->cb_clp;
struct rpc_clnt *current_rpc_client = clp->cl_cb_client;
@@ -893,9 +894,10 @@
{
struct nfsd4_callback *cb = calldata;
struct nfs4_client *clp = cb->cb_clp;
- struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
if (cb->cb_done) {
+ struct nfs4_delegation *dp = to_delegation(cb);
+
spin_lock(&clp->cl_lock);
list_del(&cb->cb_per_client);
spin_unlock(&clp->cl_lock);
@@ -1040,7 +1042,7 @@
struct nfsd4_callback *cb = container_of(w, struct nfsd4_callback,
cb_work);
- nfsd4_prepare_cb_recall(cb->cb_op);
+ nfsd4_prepare_cb_recall(to_delegation(cb));
nfsd4_run_callback_rpc(cb);
}
@@ -1050,7 +1052,6 @@
struct nfs4_client *clp = dp->dl_stid.sc_client;
dp->dl_retries = 1;
- cb->cb_op = dp;
cb->cb_clp = clp;
cb->cb_msg.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL];
cb->cb_msg.rpc_argp = cb;
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 62a82ab0..57d2db6 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -62,7 +62,6 @@
(s)->si_generation
struct nfsd4_callback {
- void *cb_op;
struct nfs4_client *cb_clp;
struct list_head cb_per_client;
u32 cb_minorversion;