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Subject[PATCH] silence nfscache allocation warnings with kvzalloc
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 <riel@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);
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