[XFS] Remove unneeded conditional code on NFS export interface related

[linux-2.6] / fs / nfsd / nfs4state.c

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index e97c58aafde5cbf897276969d3b2c16a2e0e58e1..96c7578cbe1e82c16d2b720ef4e25e91d546187f 100644 (file)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -147,6 +147,42 @@ get_nfs4_file(struct nfs4_file *fi)
        kref_get(&fi->fi_ref);
 }
 
+static int num_delegations;
+
+/*
+ * Open owner state (share locks)
+ */
+
+/* hash tables for nfs4_stateowner */
+#define OWNER_HASH_BITS              8
+#define OWNER_HASH_SIZE             (1 << OWNER_HASH_BITS)
+#define OWNER_HASH_MASK             (OWNER_HASH_SIZE - 1)
+
+#define ownerid_hashval(id) \
+        ((id) & OWNER_HASH_MASK)
+#define ownerstr_hashval(clientid, ownername) \
+        (((clientid) + opaque_hashval((ownername.data), (ownername.len))) & OWNER_HASH_MASK)
+
+static struct list_head        ownerid_hashtbl[OWNER_HASH_SIZE];
+static struct list_head        ownerstr_hashtbl[OWNER_HASH_SIZE];
+
+/* hash table for nfs4_file */
+#define FILE_HASH_BITS                   8
+#define FILE_HASH_SIZE                  (1 << FILE_HASH_BITS)
+#define FILE_HASH_MASK                  (FILE_HASH_SIZE - 1)
+/* hash table for (open)nfs4_stateid */
+#define STATEID_HASH_BITS              10
+#define STATEID_HASH_SIZE              (1 << STATEID_HASH_BITS)
+#define STATEID_HASH_MASK              (STATEID_HASH_SIZE - 1)
+
+#define file_hashval(x) \
+        hash_ptr(x, FILE_HASH_BITS)
+#define stateid_hashval(owner_id, file_id)  \
+        (((owner_id) + (file_id)) & STATEID_HASH_MASK)
+
+static struct list_head file_hashtbl[FILE_HASH_SIZE];
+static struct list_head stateid_hashtbl[STATEID_HASH_SIZE];
+
 static struct nfs4_delegation *
 alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_fh *current_fh, u32 type)
 {
@@ -155,9 +191,12 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
        struct nfs4_callback *cb = &stp->st_stateowner->so_client->cl_callback;
 
        dprintk("NFSD alloc_init_deleg\n");
+       if (num_delegations > STATEID_HASH_SIZE * 4)
+               return NULL;
        dp = kmem_cache_alloc(deleg_slab, GFP_KERNEL);
        if (dp == NULL)
                return dp;
+       num_delegations++;
        INIT_LIST_HEAD(&dp->dl_perfile);
        INIT_LIST_HEAD(&dp->dl_perclnt);
        INIT_LIST_HEAD(&dp->dl_recall_lru);
@@ -192,6 +231,7 @@ nfs4_put_delegation(struct nfs4_delegation *dp)
                dprintk("NFSD: freeing dp %p\n",dp);
                put_nfs4_file(dp->dl_file);
                kmem_cache_free(deleg_slab, dp);
+               num_delegations--;
        }
 }
 
@@ -943,40 +983,6 @@ out:
        return status;
 }
 
-/* 
- * Open owner state (share locks)
- */
-
-/* hash tables for nfs4_stateowner */
-#define OWNER_HASH_BITS              8
-#define OWNER_HASH_SIZE             (1 << OWNER_HASH_BITS)
-#define OWNER_HASH_MASK             (OWNER_HASH_SIZE - 1)
-
-#define ownerid_hashval(id) \
-        ((id) & OWNER_HASH_MASK)
-#define ownerstr_hashval(clientid, ownername) \
-        (((clientid) + opaque_hashval((ownername.data), (ownername.len))) & OWNER_HASH_MASK)
-
-static struct list_head        ownerid_hashtbl[OWNER_HASH_SIZE];
-static struct list_head        ownerstr_hashtbl[OWNER_HASH_SIZE];
-
-/* hash table for nfs4_file */
-#define FILE_HASH_BITS                   8
-#define FILE_HASH_SIZE                  (1 << FILE_HASH_BITS)
-#define FILE_HASH_MASK                  (FILE_HASH_SIZE - 1)
-/* hash table for (open)nfs4_stateid */
-#define STATEID_HASH_BITS              10
-#define STATEID_HASH_SIZE              (1 << STATEID_HASH_BITS)
-#define STATEID_HASH_MASK              (STATEID_HASH_SIZE - 1)
-
-#define file_hashval(x) \
-        hash_ptr(x, FILE_HASH_BITS)
-#define stateid_hashval(owner_id, file_id)  \
-        (((owner_id) + (file_id)) & STATEID_HASH_MASK)
-
-static struct list_head file_hashtbl[FILE_HASH_SIZE];
-static struct list_head stateid_hashtbl[STATEID_HASH_SIZE];
-
 /* OPEN Share state helper functions */
 static inline struct nfs4_file *
 alloc_init_file(struct inode *ino)
@@ -1193,8 +1199,7 @@ move_to_close_lru(struct nfs4_stateowner *sop)
 {
        dprintk("NFSD: move_to_close_lru nfs4_stateowner %p\n", sop);
 
-       unhash_stateowner(sop);
-       list_add_tail(&sop->so_close_lru, &close_lru);
+       list_move_tail(&sop->so_close_lru, &close_lru);
        sop->so_time = get_seconds();
 }
 
@@ -1923,8 +1928,7 @@ nfs4_laundromat(void)
                }
                dprintk("NFSD: purging unused open stateowner (so_id %d)\n",
                        sop->so_id);
-               list_del(&sop->so_close_lru);
-               nfs4_put_stateowner(sop);
+               release_stateowner(sop);
        }
        if (clientid_val < NFSD_LAUNDROMAT_MINTIMEOUT)
                clientid_val = NFSD_LAUNDROMAT_MINTIMEOUT;
@@ -3212,15 +3216,8 @@ __nfs4_state_shutdown(void)
        int i;
        struct nfs4_client *clp = NULL;
        struct nfs4_delegation *dp = NULL;
-       struct nfs4_stateowner *sop = NULL;
        struct list_head *pos, *next, reaplist;
 
-       list_for_each_safe(pos, next, &close_lru) {
-               sop = list_entry(pos, struct nfs4_stateowner, so_close_lru);
-               list_del(&sop->so_close_lru);
-               nfs4_put_stateowner(sop);
-       }
-
        for (i = 0; i < CLIENT_HASH_SIZE; i++) {
                while (!list_empty(&conf_id_hashtbl[i])) {
                        clp = list_entry(conf_id_hashtbl[i].next, struct nfs4_client, cl_idhash);