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path: root/fs/nfsd/nfscache.c
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Diffstat (limited to 'fs/nfsd/nfscache.c')
-rw-r--r--fs/nfsd/nfscache.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 80621a709510..fd56a52aa5fb 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -201,26 +201,29 @@ int nfsd_reply_cache_init(struct nfsd_net *nn)
{
unsigned int hashsize;
unsigned int i;
- int status = 0;
nn->max_drc_entries = nfsd_cache_size_limit();
atomic_set(&nn->num_drc_entries, 0);
hashsize = nfsd_hashsize(nn->max_drc_entries);
nn->maskbits = ilog2(hashsize);
- nn->nfsd_reply_cache_shrinker.scan_objects = nfsd_reply_cache_scan;
- nn->nfsd_reply_cache_shrinker.count_objects = nfsd_reply_cache_count;
- nn->nfsd_reply_cache_shrinker.seeks = 1;
- status = register_shrinker(&nn->nfsd_reply_cache_shrinker,
- "nfsd-reply:%s", nn->nfsd_name);
- if (status)
- return status;
-
nn->drc_hashtbl = kvzalloc(array_size(hashsize,
sizeof(*nn->drc_hashtbl)), GFP_KERNEL);
if (!nn->drc_hashtbl)
+ return -ENOMEM;
+
+ nn->nfsd_reply_cache_shrinker = shrinker_alloc(0, "nfsd-reply:%s",
+ nn->nfsd_name);
+ if (!nn->nfsd_reply_cache_shrinker)
goto out_shrinker;
+ nn->nfsd_reply_cache_shrinker->scan_objects = nfsd_reply_cache_scan;
+ nn->nfsd_reply_cache_shrinker->count_objects = nfsd_reply_cache_count;
+ nn->nfsd_reply_cache_shrinker->seeks = 1;
+ nn->nfsd_reply_cache_shrinker->private_data = nn;
+
+ shrinker_register(nn->nfsd_reply_cache_shrinker);
+
for (i = 0; i < hashsize; i++) {
INIT_LIST_HEAD(&nn->drc_hashtbl[i].lru_head);
spin_lock_init(&nn->drc_hashtbl[i].cache_lock);
@@ -229,7 +232,7 @@ int nfsd_reply_cache_init(struct nfsd_net *nn)
return 0;
out_shrinker:
- unregister_shrinker(&nn->nfsd_reply_cache_shrinker);
+ kvfree(nn->drc_hashtbl);
printk(KERN_ERR "nfsd: failed to allocate reply cache\n");
return -ENOMEM;
}
@@ -239,7 +242,7 @@ void nfsd_reply_cache_shutdown(struct nfsd_net *nn)
struct nfsd_cacherep *rp;
unsigned int i;
- unregister_shrinker(&nn->nfsd_reply_cache_shrinker);
+ shrinker_free(nn->nfsd_reply_cache_shrinker);
for (i = 0; i < nn->drc_hashsize; i++) {
struct list_head *head = &nn->drc_hashtbl[i].lru_head;
@@ -323,8 +326,7 @@ nfsd_prune_bucket_locked(struct nfsd_net *nn, struct nfsd_drc_bucket *b,
static unsigned long
nfsd_reply_cache_count(struct shrinker *shrink, struct shrink_control *sc)
{
- struct nfsd_net *nn = container_of(shrink,
- struct nfsd_net, nfsd_reply_cache_shrinker);
+ struct nfsd_net *nn = shrink->private_data;
return atomic_read(&nn->num_drc_entries);
}
@@ -343,8 +345,7 @@ nfsd_reply_cache_count(struct shrinker *shrink, struct shrink_control *sc)
static unsigned long
nfsd_reply_cache_scan(struct shrinker *shrink, struct shrink_control *sc)
{
- struct nfsd_net *nn = container_of(shrink,
- struct nfsd_net, nfsd_reply_cache_shrinker);
+ struct nfsd_net *nn = shrink->private_data;
unsigned long freed = 0;
LIST_HEAD(dispose);
unsigned int i;