summaryrefslogtreecommitdiff
path: root/fs/nfs
diff options
context:
space:
mode:
authorChuck Lever <chuck.lever@oracle.com>2013-08-09 12:48:53 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-09-03 15:26:34 -0400
commit744aa5253010636bb56f062336e9cae3132a46fb (patch)
tree616addca502e8a585bf9ca8fccf764fec347c0c1 /fs/nfs
parent9d33059c1b76d77004753799479af6d359d83217 (diff)
NFS: Add global helper to set up a stand-along nfs4_slot_table
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/nfs4session.c38
-rw-r--r--fs/nfs/nfs4session.h2
2 files changed, 27 insertions, 13 deletions
diff --git a/fs/nfs/nfs4session.c b/fs/nfs/nfs4session.c
index 746675b74624..be273c589b03 100644
--- a/fs/nfs/nfs4session.c
+++ b/fs/nfs/nfs4session.c
@@ -23,6 +23,14 @@
#define NFSDBG_FACILITY NFSDBG_STATE
+static void nfs4_init_slot_table(struct nfs4_slot_table *tbl, const char *queue)
+{
+ tbl->highest_used_slotid = NFS4_NO_SLOT;
+ spin_lock_init(&tbl->slot_tbl_lock);
+ rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, queue);
+ init_completion(&tbl->complete);
+}
+
/*
* nfs4_shrink_slot_table - free retired slots from the slot table
*/
@@ -223,6 +231,21 @@ out:
return ret;
}
+/**
+ * nfs4_setup_slot_table - prepare a stand-alone slot table for use
+ * @tbl: slot table to set up
+ * @max_reqs: maximum number of requests allowed
+ * @queue: name to give RPC wait queue
+ *
+ * Returns zero on success, or a negative errno.
+ */
+int nfs4_setup_slot_table(struct nfs4_slot_table *tbl, unsigned int max_reqs,
+ const char *queue)
+{
+ nfs4_init_slot_table(tbl, queue);
+ return nfs4_realloc_slot_table(tbl, max_reqs, 0);
+}
+
static bool nfs41_assign_slot(struct rpc_task *task, void *pslot)
{
struct nfs4_sequence_args *args = task->tk_msg.rpc_argp;
@@ -425,24 +448,13 @@ int nfs4_setup_session_slot_tables(struct nfs4_session *ses)
struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
{
struct nfs4_session *session;
- struct nfs4_slot_table *tbl;
session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
if (!session)
return NULL;
- tbl = &session->fc_slot_table;
- tbl->highest_used_slotid = NFS4_NO_SLOT;
- spin_lock_init(&tbl->slot_tbl_lock);
- rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
- init_completion(&tbl->complete);
-
- tbl = &session->bc_slot_table;
- tbl->highest_used_slotid = NFS4_NO_SLOT;
- spin_lock_init(&tbl->slot_tbl_lock);
- rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
- init_completion(&tbl->complete);
-
+ nfs4_init_slot_table(&session->fc_slot_table, "ForeChannel Slot table");
+ nfs4_init_slot_table(&session->bc_slot_table, "BackChannel Slot table");
session->session_state = 1<<NFS4_SESSION_INITING;
session->clp = clp;
diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h
index e069cf2d8c5f..f223a7648f9e 100644
--- a/fs/nfs/nfs4session.h
+++ b/fs/nfs/nfs4session.h
@@ -72,6 +72,8 @@ enum nfs4_session_state {
NFS4_SESSION_INITING,
};
+extern int nfs4_setup_slot_table(struct nfs4_slot_table *tbl,
+ unsigned int max_reqs, const char *queue);
extern struct nfs4_slot *nfs4_alloc_slot(struct nfs4_slot_table *tbl);
extern void nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot);
extern void nfs4_slot_tbl_drain_complete(struct nfs4_slot_table *tbl);