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authorJ. Bruce Fields <bfields@citi.umich.edu>2010-03-04 11:32:59 -0500
committerJ. Bruce Fields <bfields@citi.umich.edu>2010-04-22 11:34:02 -0400
commitb12a05cbdfdf7e4d8cbe8fa78e995f971420086b (patch)
tree05f82bd2abf8ab0b688383c467b76db713cdcc09 /fs/nfsd
parentb5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf (diff)
downloadlinux-b12a05cbdfdf7e4d8cbe8fa78e995f971420086b.tar.bz2
nfsd4: cl_count is unused
Now that the shutdown sequence guarantees callbacks are shut down before the client is destroyed, we no longer have a use for cl_count. We'll probably reinstate a reference count on the client some day, but it will be held by users other than callbacks. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4callback.c6
-rw-r--r--fs/nfsd/nfs4state.c11
-rw-r--r--fs/nfsd/state.h2
3 files changed, 2 insertions, 17 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index e078c747f49d..5856fc8adb70 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -681,10 +681,8 @@ static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
static void nfsd4_cb_recall_release(void *calldata)
{
struct nfs4_delegation *dp = calldata;
- struct nfs4_client *clp = dp->dl_client;
nfs4_put_delegation(dp);
- put_nfs4_client(clp);
}
static const struct rpc_call_ops nfsd4_cb_recall_ops = {
@@ -746,10 +744,8 @@ static void _nfsd4_cb_recall(struct nfs4_delegation *dp)
dp->dl_retries = 1;
status = rpc_call_async(clnt, &msg, RPC_TASK_SOFT,
&nfsd4_cb_recall_ops, dp);
- if (status) {
- put_nfs4_client(clp);
+ if (status)
nfs4_put_delegation(dp);
- }
}
void nfsd4_do_callback_rpc(struct work_struct *w)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index adc51d10d435..cf650cbb814b 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -690,13 +690,6 @@ free_client(struct nfs4_client *clp)
kfree(clp);
}
-void
-put_nfs4_client(struct nfs4_client *clp)
-{
- if (atomic_dec_and_test(&clp->cl_count))
- free_client(clp);
-}
-
static void
expire_client(struct nfs4_client *clp)
{
@@ -735,7 +728,7 @@ expire_client(struct nfs4_client *clp)
nfsd4_set_callback_client(clp, NULL);
if (clp->cl_cb_xprt)
svc_xprt_put(clp->cl_cb_xprt);
- put_nfs4_client(clp);
+ free_client(clp);
}
static void copy_verf(struct nfs4_client *target, nfs4_verifier *source)
@@ -821,7 +814,6 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
}
memcpy(clp->cl_recdir, recdir, HEXDIR_LEN);
- atomic_set(&clp->cl_count, 1);
atomic_set(&clp->cl_cb_conn.cb_set, 0);
INIT_LIST_HEAD(&clp->cl_idhash);
INIT_LIST_HEAD(&clp->cl_strhash);
@@ -2010,7 +2002,6 @@ void nfsd_break_deleg_cb(struct file_lock *fl)
* lock) we know the server hasn't removed the lease yet, we know
* it's safe to take a reference: */
atomic_inc(&dp->dl_count);
- atomic_inc(&dp->dl_client->cl_count);
spin_lock(&recall_lock);
list_add_tail(&dp->dl_recall_lru, &del_recall_lru);
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index c4c92aea8f39..cef20abf330c 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -224,7 +224,6 @@ struct nfs4_client {
clientid_t cl_clientid; /* generated by server */
nfs4_verifier cl_confirm; /* generated by server */
struct nfs4_cb_conn cl_cb_conn; /* callback info */
- atomic_t cl_count; /* ref count */
u32 cl_firststate; /* recovery dir creation */
/* for nfs41 */
@@ -388,7 +387,6 @@ extern void nfs4_lock_state(void);
extern void nfs4_unlock_state(void);
extern int nfs4_in_grace(void);
extern __be32 nfs4_check_open_reclaim(clientid_t *clid);
-extern void put_nfs4_client(struct nfs4_client *clp);
extern void nfs4_free_stateowner(struct kref *kref);
extern int set_callback_cred(void);
extern void nfsd4_probe_callback(struct nfs4_client *clp);