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authorStanislav Kinsbursky <skinsbursky@parallels.com>2011-11-25 18:13:04 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-02-01 03:20:26 +0400
commit1b340d0118da1d7c60c664f17d7c8fce2bb1cd9d (patch)
treea66a9626f8fca21bd42d13a3b4270b168e2186fc /fs/nfs/nfs4namespace.c
parent5c1cacb175185ed925d7dc13ac7e0653e7a633cd (diff)
downloadlinux-1b340d0118da1d7c60c664f17d7c8fce2bb1cd9d.tar.xz
NFS: DNS resolver cache per network namespace context introduced
This patch implements DNS resolver cache creation and registration for each alive network namespace context. This was done by registering NFS per-net operations, responsible for DNS cache allocation/register and unregister/destructioning instead of initialization and destruction of static "nfs_dns_resolve" cache detail (this one was removed). Pointer to network dns resolver cache is stored in new per-net "nfs_net" structure. This patch also changes nfs_dns_resolve_name() function prototype (and it's calls) by adding network pointer parameter, which is used to get proper DNS resolver cache pointer for do_cache_lookup_wait() call. Note: empty nfs_dns_resolver_init() and nfs_dns_resolver_destroy() functions will be used in next patch in the series. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4namespace.c')
-rw-r--r--fs/nfs/nfs4namespace.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index bb80c49b6533..919a36935924 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -94,13 +94,14 @@ static int nfs4_validate_fspath(struct dentry *dentry,
}
static size_t nfs_parse_server_name(char *string, size_t len,
- struct sockaddr *sa, size_t salen)
+ struct sockaddr *sa, size_t salen, struct nfs_server *server)
{
ssize_t ret;
ret = rpc_pton(string, len, sa, salen);
if (ret == 0) {
- ret = nfs_dns_resolve_name(string, len, sa, salen);
+ ret = nfs_dns_resolve_name(server->client->cl_xprt->xprt_net,
+ string, len, sa, salen);
if (ret < 0)
ret = 0;
}
@@ -137,7 +138,8 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
continue;
mountdata->addrlen = nfs_parse_server_name(buf->data, buf->len,
- mountdata->addr, addr_bufsize);
+ mountdata->addr, addr_bufsize,
+ NFS_SB(mountdata->sb));
if (mountdata->addrlen == 0)
continue;