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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>
This commit is contained in:
Christoph Hellwig 2014-09-24 12:19:16 +02:00 committed by J. Bruce Fields
parent 341b51df1f
commit 2faf3b4350
2 changed files with 9 additions and 9 deletions
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17
fs/nfsd/nfs4callback.c
View File

@ -55,6 +55,9 @@ enum {
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_null(struct rpc_rqst *req, struct xdr_stream *xdr,
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 @@ static void nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, struct xdr_stream *xdr,
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 @@ static void do_probe_callback(struct nfs4_client *clp)
{
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_done(struct rpc_task *task, void *calldata)
}
}
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 @@ static void nfsd4_cb_recall_release(void *calldata)
{
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 @@ nfsd4_run_cb_recall(struct work_struct *w)
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 @@ void nfsd4_cb_recall(struct nfs4_delegation *dp)
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;

1
fs/nfsd/state.h
View File

@ -62,7 +62,6 @@ typedef struct {
(s)->si_generation
struct nfsd4_callback {
void *cb_op;
struct nfs4_client *cb_clp;
struct list_head cb_per_client;
u32 cb_minorversion;