2008-01-25 17:00:07

by Myklebust, Trond

[permalink] [raw]
Subject: [PATCH 049/112] NFS: Clean up the nfs_client initialisation

Signed-off-by: Trond Myklebust <[email protected]>
---

fs/nfs/client.c | 51 +++++++++++++++++++++++++++++++--------------------
1 files changed, 31 insertions(+), 20 deletions(-)

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 8b5f9b9..d7f6d50 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -93,22 +93,26 @@ struct rpc_program nfsacl_program = {
};
#endif /* CONFIG_NFS_V3_ACL */

+struct nfs_client_initdata {
+ const char *hostname;
+ const struct sockaddr_in *addr;
+ int version;
+};
+
/*
* Allocate a shared client record
*
* Since these are allocated/deallocated very rarely, we don't
* bother putting them in a slab cache...
*/
-static struct nfs_client *nfs_alloc_client(const char *hostname,
- const struct sockaddr_in *addr,
- int nfsversion)
+static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
{
struct nfs_client *clp;

if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL)
goto error_0;

- if (nfsversion == 4) {
+ if (cl_init->version == 4) {
if (nfs_callback_up() < 0)
goto error_2;
__set_bit(NFS_CS_CALLBACK, &clp->cl_res_state);
@@ -117,11 +121,11 @@ static struct nfs_client *nfs_alloc_client(const char *hostname,
atomic_set(&clp->cl_count, 1);
clp->cl_cons_state = NFS_CS_INITING;

- clp->cl_nfsversion = nfsversion;
- memcpy(&clp->cl_addr, addr, sizeof(clp->cl_addr));
+ clp->cl_nfsversion = cl_init->version;
+ memcpy(&clp->cl_addr, cl_init->addr, sizeof(clp->cl_addr));

- if (hostname) {
- clp->cl_hostname = kstrdup(hostname, GFP_KERNEL);
+ if (cl_init->hostname) {
+ clp->cl_hostname = kstrdup(cl_init->hostname, GFP_KERNEL);
if (!clp->cl_hostname)
goto error_3;
}
@@ -256,22 +260,20 @@ struct nfs_client *nfs_find_client(const struct sockaddr_in *addr, int nfsversio
* Look up a client by IP address and protocol version
* - creates a new record if one doesn't yet exist
*/
-static struct nfs_client *nfs_get_client(const char *hostname,
- const struct sockaddr_in *addr,
- int nfsversion)
+static struct nfs_client *nfs_get_client(const struct nfs_client_initdata *cl_init)
{
struct nfs_client *clp, *new = NULL;
int error;

dprintk("--> nfs_get_client(%s,"NIPQUAD_FMT":%d,%d)\n",
- hostname ?: "", NIPQUAD(addr->sin_addr),
- addr->sin_port, nfsversion);
+ cl_init->hostname ?: "", NIPQUAD(cl_init->addr->sin_addr),
+ cl_init->addr->sin_port, cl_init->version);

/* see if the client already exists */
do {
spin_lock(&nfs_client_lock);

- clp = __nfs_find_client(addr, nfsversion, 1);
+ clp = __nfs_find_client(cl_init->addr, cl_init->version, 1);
if (clp)
goto found_client;
if (new)
@@ -279,7 +281,7 @@ static struct nfs_client *nfs_get_client(const char *hostname,

spin_unlock(&nfs_client_lock);

- new = nfs_alloc_client(hostname, addr, nfsversion);
+ new = nfs_alloc_client(cl_init);
} while (new);

return ERR_PTR(-ENOMEM);
@@ -540,19 +542,23 @@ error:
static int nfs_init_server(struct nfs_server *server,
const struct nfs_parsed_mount_data *data)
{
+ struct nfs_client_initdata cl_init = {
+ .hostname = data->nfs_server.hostname,
+ .addr = &data->nfs_server.address,
+ .version = 2,
+ };
struct nfs_client *clp;
- int error, nfsvers = 2;
+ int error;

dprintk("--> nfs_init_server()\n");

#ifdef CONFIG_NFS_V3
if (data->flags & NFS_MOUNT_VER3)
- nfsvers = 3;
+ cl_init.version = 3;
#endif

/* Allocate or find a client reference we can use */
- clp = nfs_get_client(data->nfs_server.hostname,
- &data->nfs_server.address, nfsvers);
+ clp = nfs_get_client(&cl_init);
if (IS_ERR(clp)) {
dprintk("<-- nfs_init_server() = error %ld\n", PTR_ERR(clp));
return PTR_ERR(clp);
@@ -889,13 +895,18 @@ static int nfs4_set_client(struct nfs_server *server,
rpc_authflavor_t authflavour,
int proto, int timeo, int retrans)
{
+ struct nfs_client_initdata cl_init = {
+ .hostname = hostname,
+ .addr = addr,
+ .version = 4,
+ };
struct nfs_client *clp;
int error;

dprintk("--> nfs4_set_client()\n");

/* Allocate or find a client reference we can use */
- clp = nfs_get_client(hostname, addr, 4);
+ clp = nfs_get_client(&cl_init);
if (IS_ERR(clp)) {
error = PTR_ERR(clp);
goto error;