1 files changed, 18 insertions, 7 deletions

diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 0d6002f26d8..a6c57334fa1 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -213,6 +213,23 @@ static inline int cache_is_valid(struct cache_detail *detail, struct cache_head
         }
 }
 
+static int try_to_negate_entry(struct cache_detail *detail, struct cache_head *h)
+{
+        int rv;
+
+        write_lock(&detail->hash_lock);
+        rv = cache_is_valid(detail, h);
+        if (rv != -EAGAIN) {
+                write_unlock(&detail->hash_lock);
+                return rv;
+        }
+        set_bit(CACHE_NEGATIVE, &h->flags);
+        cache_fresh_locked(h, seconds_since_boot()+CACHE_NEW_EXPIRY);
+        write_unlock(&detail->hash_lock);
+        cache_fresh_unlocked(h, detail);
+        return -ENOENT;
+}
+
 /*
  * This is the generic cache management routine for all
  * the authentication caches.
@@ -251,14 +268,8 @@ int cache_check(struct cache_detail *detail,
                         case -EINVAL:
                                 clear_bit(CACHE_PENDING, &h->flags);
                                 cache_revisit_request(h);
-                                if (rv == -EAGAIN) {
-                                        set_bit(CACHE_NEGATIVE, &h->flags);
-                                        cache_fresh_locked(h, seconds_since_boot()+CACHE_NEW_EXPIRY);
-                                        cache_fresh_unlocked(h, detail);
-                                        rv = -ENOENT;
-                                }
+                                rv = try_to_negate_entry(detail, h);
                                 break;
-
                         case -EAGAIN:
                                 clear_bit(CACHE_PENDING, &h->flags);
                                 cache_revisit_request(h);