[PATCH] silence nfscache allocation warnings with kvzalloc

[Rik van Riel]

silence nfscache allocation warnings with kvzalloc

Currently nfsd_reply_cache_init attempts hash table allocation through
kmalloc, and manually falls back to vzalloc if that fails. This makes
the code a little larger than needed, and creates a significant amount
of serial console spam if you have enough systems.

Switching to kvzalloc gets rid of the allocation warnings, and makes
the code a little cleaner too as a side effect.

Freeing of nn->drc_hashtbl is already done using kvfree currently.

Signed-off-by: Rik van Riel <r...@surriel.com>
---
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 96352ab7bd81..5125b5ef25b6 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -164,14 +164,10 @@ int nfsd_reply_cache_init(struct nfsd_net *nn)
        if (!nn->drc_slab)
                goto out_shrinker;
 
-       nn->drc_hashtbl = kcalloc(hashsize,
-                               sizeof(*nn->drc_hashtbl), GFP_KERNEL);
-       if (!nn->drc_hashtbl) {
-               nn->drc_hashtbl = vzalloc(array_size(hashsize,
-                                                sizeof(*nn->drc_hashtbl)));
-               if (!nn->drc_hashtbl)
-                       goto out_slab;
-       }
+       nn->drc_hashtbl = kvzalloc(array_size(hashsize,
+                                  sizeof(*nn->drc_hashtbl)), GFP_KERNEL);
+       if (!nn->drc_hashtbl)
+               goto out_slab;
 
        for (i = 0; i < hashsize; i++) {
                INIT_LIST_HEAD(&nn->drc_hashtbl[i].lru_head);