1 files changed, 4 insertions, 32 deletions

diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index b6af150c96b8..f8f060ffbf4f 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -132,13 +132,6 @@ nfsd_reply_cache_alloc(void)
 }
 
 static void
-nfsd_reply_cache_unhash(struct svc_cacherep *rp)
-{
-        hlist_del_init(&rp->c_hash);
-        list_del_init(&rp->c_lru);
-}
-
-static void
 nfsd_reply_cache_free_locked(struct svc_cacherep *rp)
 {
         if (rp->c_type == RC_REPLBUFF && rp->c_replvec.iov_base) {
@@ -416,22 +409,8 @@ nfsd_cache_lookup(struct svc_rqst *rqstp)
 
         /*
          * Since the common case is a cache miss followed by an insert,
-         * preallocate an entry. First, try to reuse the first entry on the LRU
-         * if it works, then go ahead and prune the LRU list.
+         * preallocate an entry.
          */
-        spin_lock(&cache_lock);
-        if (!list_empty(&lru_head)) {
-                rp = list_first_entry(&lru_head, struct svc_cacherep, c_lru);
-                if (nfsd_cache_entry_expired(rp) ||
-                    num_drc_entries >= max_drc_entries) {
-                        nfsd_reply_cache_unhash(rp);
-                        prune_cache_entries();
-                        goto search_cache;
-                }
-        }
-
-        /* No expired ones available, allocate a new one. */
-        spin_unlock(&cache_lock);
         rp = nfsd_reply_cache_alloc();
         spin_lock(&cache_lock);
         if (likely(rp)) {
@@ -439,7 +418,9 @@ nfsd_cache_lookup(struct svc_rqst *rqstp)
                 drc_mem_usage += sizeof(*rp);
         }
 
-search_cache:
+        /* go ahead and prune the cache */
+        prune_cache_entries();
+
         found = nfsd_cache_search(rqstp, csum);
         if (found) {
                 if (likely(rp))
@@ -453,15 +434,6 @@ search_cache:
                 goto out;
         }
 
-        /*
-         * We're keeping the one we just allocated. Are we now over the
-         * limit? Prune one off the tip of the LRU in trade for the one we
-         * just allocated if so.
-         */
-        if (num_drc_entries >= max_drc_entries)
-                nfsd_reply_cache_free_locked(list_first_entry(&lru_head,
-                                                struct svc_cacherep, c_lru));
-
         nfsdstats.rcmisses++;
         rqstp->rq_cacherep = rp;
         rp->c_state = RC_INPROG;