sunrpc/cache: use list_del_init for the list_head entries in cache_deferred_req

Using list_del_init is generally safer than list_del, and it will
allow us, in a subsequent patch, to see if an entry has already been
processed or not.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index f2895d0a5f81..4a32a30a03eb 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -529,8 +529,8 @@ static int cache_defer_req(struct cache_req *req, struct cache_head *item)
         if (++cache_defer_cnt > DFR_MAX) {
                 dreq = list_entry(cache_defer_list.prev,
                                   struct cache_deferred_req, recent);
-                list_del(&dreq->recent);
-                list_del(&dreq->hash);
+                list_del_init(&dreq->recent);
+                list_del_init(&dreq->hash);
                 cache_defer_cnt--;
         }
         spin_unlock(&cache_defer_lock);
@@ -564,7 +564,7 @@ static void cache_revisit_request(struct cache_head *item)
                         dreq = list_entry(lp, struct cache_deferred_req, hash);
                         lp = lp->next;
                         if (dreq->item == item) {
-                                list_del(&dreq->hash);
+                                list_del_init(&dreq->hash);
                                 list_move(&dreq->recent, &pending);
                                 cache_defer_cnt--;
                         }
@@ -590,7 +590,7 @@ void cache_clean_deferred(void *owner)
 
         list_for_each_entry_safe(dreq, tmp, &cache_defer_list, recent) {
                 if (dreq->owner == owner) {
-                        list_del(&dreq->hash);
+                        list_del_init(&dreq->hash);
                         list_move(&dreq->recent, &pending);
                         cache_defer_cnt--;
                 }