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authorStanislav Kinsbursky <skinsbursky@parallels.com>2012-01-19 18:42:21 +0100
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-02-01 01:28:14 +0100
commit0a402d5a653ee2b613aaba3092a87b1e964622ce (patch)
tree160a5942e42d7a537859e318837bf475bc8123e0 /net/sunrpc
parentSUNRPC: unregister service on creation in current network namespace (diff)
downloadlinux-0a402d5a653ee2b613aaba3092a87b1e964622ce.tar.xz
linux-0a402d5a653ee2b613aaba3092a87b1e964622ce.zip
SUNRPC: cache creation and destruction routines introduced
This patch prepares infrastructure for network namespace aware cache detail allocation. One note about adding network namespace link to cache structure. It's going to be used later in NFS DNS cache parsing routine (nfs_dns_parse for rpc_pton() call). Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/cache.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index fefe06729f9d..a450b8ac648b 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -1664,6 +1664,32 @@ void cache_unregister(struct cache_detail *cd)
}
EXPORT_SYMBOL_GPL(cache_unregister);
+struct cache_detail *cache_create_net(struct cache_detail *tmpl, struct net *net)
+{
+ struct cache_detail *cd;
+
+ cd = kmemdup(tmpl, sizeof(struct cache_detail), GFP_KERNEL);
+ if (cd == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ cd->hash_table = kzalloc(cd->hash_size * sizeof(struct cache_head *),
+ GFP_KERNEL);
+ if (cd->hash_table == NULL) {
+ kfree(cd);
+ return ERR_PTR(-ENOMEM);
+ }
+ cd->net = net;
+ return cd;
+}
+EXPORT_SYMBOL_GPL(cache_create_net);
+
+void cache_destroy_net(struct cache_detail *cd, struct net *net)
+{
+ kfree(cd->hash_table);
+ kfree(cd);
+}
+EXPORT_SYMBOL_GPL(cache_destroy_net);
+
static ssize_t cache_read_pipefs(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{