NFS: Add global helper for releasing slot table resources

The nfs4_destroy_slot_tables() function is renamed to avoid
confusion with the new helper.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

2 files changed, 16 insertions, 6 deletions

diff --git a/fs/nfs/nfs4session.c b/fs/nfs/nfs4session.c
index be273c589b03..e0bf666c4c29 100644
--- a/fs/nfs/nfs4session.c
+++ b/fs/nfs/nfs4session.c
@@ -232,6 +232,16 @@ out:
 }
 
 /**
+ * nfs4_release_slot_table - release resources attached to a slot table
+ * @tbl: slot table to shut down
+ *
+ */
+void nfs4_release_slot_table(struct nfs4_slot_table *tbl)
+{
+        nfs4_shrink_slot_table(tbl, 0);
+}
+
+/**
  * 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
@@ -412,11 +422,10 @@ void nfs41_update_target_slotid(struct nfs4_slot_table *tbl,
 
 #if defined(CONFIG_NFS_V4_1)
 
-/* Destroy the slot table */
-static void nfs4_destroy_slot_tables(struct nfs4_session *session)
+static void nfs4_destroy_session_slot_tables(struct nfs4_session *session)
 {
-        nfs4_shrink_slot_table(&session->fc_slot_table, 0);
-        nfs4_shrink_slot_table(&session->bc_slot_table, 0);
+        nfs4_release_slot_table(&session->fc_slot_table);
+        nfs4_release_slot_table(&session->bc_slot_table);
 }
 
 /*
@@ -441,7 +450,7 @@ int nfs4_setup_session_slot_tables(struct nfs4_session *ses)
         if (status && tbl->slots == NULL)
                 /* Fore and back channel share a connection so get
                  * both slot tables or neither */
-                nfs4_destroy_slot_tables(ses);
+                nfs4_destroy_session_slot_tables(ses);
         return status;
 }
 
@@ -477,7 +486,7 @@ void nfs4_destroy_session(struct nfs4_session *session)
         dprintk("%s Destroy backchannel for xprt %p\n",
                 __func__, xprt);
         xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS);
-        nfs4_destroy_slot_tables(session);
+        nfs4_destroy_session_slot_tables(session);
         kfree(session);
 }
 
diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h
index f223a7648f9e..bfb0fe38f024 100644
--- a/fs/nfs/nfs4session.h
+++ b/fs/nfs/nfs4session.h
@@ -74,6 +74,7 @@ enum nfs4_session_state {
 
 extern int nfs4_setup_slot_table(struct nfs4_slot_table *tbl,
                 unsigned int max_reqs, const char *queue);
+extern void nfs4_release_slot_table(struct nfs4_slot_table *tbl);
 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);