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authorStanislav Kinsbursky <skinsbursky@parallels.com>2013-02-04 14:02:35 +0300
committerJ. Bruce Fields <bfields@redhat.com>2013-02-15 10:43:12 -0500
commit483479c26a65e5f0cc95e9324f313bc95c7dc6fd (patch)
treec5b72368672a50a7a43cb3e2f4e70c089bc0a360 /fs/nfs/dns_resolve.c
parente56a316214d0f1e2446fa7a717309f9414564d9d (diff)
downloadlinux-483479c26a65e5f0cc95e9324f313bc95c7dc6fd.tar.bz2
NFS: use SUNRPC cache creation and destruction helper for DNS cache
This cache was the first containerized and doesn't use net-aware cache creation and destruction helpers. This is a cleanup patch which just makes code looks clearer and reduce amount of lines of code. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfs/dns_resolve.c')
-rw-r--r--fs/nfs/dns_resolve.c60
1 files changed, 25 insertions, 35 deletions
diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c
index 62c8c4127219..d5ce5f4f0f5f 100644
--- a/fs/nfs/dns_resolve.c
+++ b/fs/nfs/dns_resolve.c
@@ -353,48 +353,39 @@ ssize_t nfs_dns_resolve_name(struct net *net, char *name,
}
EXPORT_SYMBOL_GPL(nfs_dns_resolve_name);
+static struct cache_detail nfs_dns_resolve_template = {
+ .owner = THIS_MODULE,
+ .hash_size = NFS_DNS_HASHTBL_SIZE,
+ .name = "dns_resolve",
+ .cache_put = nfs_dns_ent_put,
+ .cache_upcall = nfs_dns_upcall,
+ .cache_parse = nfs_dns_parse,
+ .cache_show = nfs_dns_show,
+ .match = nfs_dns_match,
+ .init = nfs_dns_ent_init,
+ .update = nfs_dns_ent_update,
+ .alloc = nfs_dns_ent_alloc,
+};
+
+
int nfs_dns_resolver_cache_init(struct net *net)
{
- int err = -ENOMEM;
+ int err;
struct nfs_net *nn = net_generic(net, nfs_net_id);
- struct cache_detail *cd;
- struct cache_head **tbl;
- cd = kzalloc(sizeof(struct cache_detail), GFP_KERNEL);
- if (cd == NULL)
- goto err_cd;
-
- tbl = kzalloc(NFS_DNS_HASHTBL_SIZE * sizeof(struct cache_head *),
- GFP_KERNEL);
- if (tbl == NULL)
- goto err_tbl;
-
- cd->owner = THIS_MODULE,
- cd->hash_size = NFS_DNS_HASHTBL_SIZE,
- cd->hash_table = tbl,
- cd->name = "dns_resolve",
- cd->cache_put = nfs_dns_ent_put,
- cd->cache_upcall = nfs_dns_upcall,
- cd->cache_parse = nfs_dns_parse,
- cd->cache_show = nfs_dns_show,
- cd->match = nfs_dns_match,
- cd->init = nfs_dns_ent_init,
- cd->update = nfs_dns_ent_update,
- cd->alloc = nfs_dns_ent_alloc,
-
- nfs_cache_init(cd);
- err = nfs_cache_register_net(net, cd);
+ nn->nfs_dns_resolve = cache_create_net(&nfs_dns_resolve_template, net);
+ if (IS_ERR(nn->nfs_dns_resolve))
+ return PTR_ERR(nn->nfs_dns_resolve);
+
+ nfs_cache_init(nn->nfs_dns_resolve);
+ err = nfs_cache_register_net(net, nn->nfs_dns_resolve);
if (err)
goto err_reg;
- nn->nfs_dns_resolve = cd;
return 0;
err_reg:
- nfs_cache_destroy(cd);
- kfree(cd->hash_table);
-err_tbl:
- kfree(cd);
-err_cd:
+ nfs_cache_destroy(nn->nfs_dns_resolve);
+ cache_destroy_net(nn->nfs_dns_resolve, net);
return err;
}
@@ -405,8 +396,7 @@ void nfs_dns_resolver_cache_destroy(struct net *net)
nfs_cache_unregister_net(net, cd);
nfs_cache_destroy(cd);
- kfree(cd->hash_table);
- kfree(cd);
+ cache_destroy_net(nn->nfs_dns_resolve, net);
}
static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event,