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[PATCH v3, RESEND 13/16] nfs: introduce mount option 'rpcmount' [message #42059 is a reply to message #42046] Tue, 08 February 2011 18:42 Go to previous messageGo to previous message
Kirill A. Shutemov is currently offline  Kirill A. Shutemov
Messages: 37
Registered: January 2011
Member
It specifies rpc_pipefs to use. /var/lib/nfs/rpc_pipefs, by default.

Signed-off-by: Kirill A. Shutemov <kas@openvz.org>
Reviewed-by: Rob Landley <rlandley@parallels.com>
---
fs/nfs/callback.c | 5 ++-
fs/nfs/callback.h | 3 +-
fs/nfs/client.c | 46 ++++++++++++++++++++++++++++++++++++--------
fs/nfs/internal.h | 10 +++++++-
fs/nfs/mount_clnt.c | 3 +-
fs/nfs/namespace.c | 3 +-
fs/nfs/nfs4namespace.c | 22 +++++++++++---------
fs/nfs/super.c | 20 +++++++++++++++++++
include/linux/nfs_fs_sb.h | 1 +
9 files changed, 86 insertions(+), 27 deletions(-)

diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index c9b98ad..d56f402 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -245,7 +245,8 @@ static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt,
/*
* Bring up the callback thread if it is not already up.
*/
-int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt)
+int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt,
+ struct vfsmount *rpcmount)
{
struct svc_serv *serv = NULL;
struct svc_rqst *rqstp;
@@ -260,7 +261,7 @@ int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt)
nfs_callback_bc_serv(minorversion, xprt, cb_info);
goto out;
}
- serv = svc_create(&nfs4_callback_program, init_rpc_pipefs,
+ serv = svc_create(&nfs4_callback_program, rpcmount,
NFS4_CALLBACK_BUFSIZE, NULL);
if (!serv) {
ret = -ENOMEM;
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index 46d93ce..0ea5d1e 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -175,7 +175,8 @@ extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args,
extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy,
struct cb_process_state *cps);
#ifdef CONFIG_NFS_V4
-extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt);
+extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt,
+ struct vfsmount *rpcmount);
extern void nfs_callback_down(int minorversion);
extern int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation,
const nfs4_stateid *stateid);
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 79c01f8..63e3b54 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -131,6 +131,7 @@ struct nfs_client_initdata {
const struct nfs_rpc_ops *rpc_ops;
int proto;
u32 minorversion;
+ struct vfsmount *rpcmount;
};

/*
@@ -167,6 +168,7 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
clp->cl_rpcclient = ERR_PTR(-EINVAL);

clp->cl_proto = cl_init->proto;
+ clp->cl_rpcmount = mntget(cl_init->rpcmount);

#ifdef CONFIG_NFS_V4
err = nfs_get_cb_ident_idr(clp, cl_init->minorversion);
@@ -286,6 +288,7 @@ static void nfs_free_client(struct nfs_client *clp)
if (clp->cl_machine_cred != NULL)
put_rpccred(clp->cl_machine_cred);

+ mntput(clp->cl_rpcmount);
kfree(clp->cl_hostname);
kfree(clp);

@@ -471,6 +474,9 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat
/* Match the full socket address */
if (!nfs_sockaddr_cmp(sap, clap))
continue;
+ /* Match rpc_pipefs mount point */
+ if (clp->cl_rpcmount->mnt_sb != data->rpcmount->mnt_sb)
+ continue;

atomic_inc(&clp->cl_count);
return clp;
@@ -629,7 +635,7 @@ static int nfs_create_rpc_client(struct nfs_client *clp,
.program = &nfs_program,
.version = clp->rpc_ops->version,
.authflavor = flavor,
- .rpcmount = init_rpc_pipefs,
+ .rpcmount = clp->cl_rpcmount,
};

if (discrtry)
@@ -664,7 +670,7 @@ static void nfs_destroy_server(struct nfs_server *server)
/*
* Version 2 or 3 lockd setup
*/
-static int nfs_start_lockd(struct nfs_server *server)
+static int nfs_start_lockd(struct nfs_server *server, struct vfsmount *rpcmount)
{
struct nlm_host *host;
struct nfs_client *clp = server->nfs_client;
@@ -675,7 +681,7 @@ static int nfs_start_lockd(struct nfs_server *server)
.nfs_version = clp->rpc_ops->version,
.noresvport = server->flags & NFS_MOUNT_NORESVPORT ?
1 : 0,
- .rpcmount = init_rpc_pipefs,
+ .rpcmount = rpcmount,
};

if (nlm_init.nfs_version > 3)
@@ -823,8 +829,16 @@ static int nfs_init_server(struct nfs_server *server,
cl_init.rpc_ops = &nfs_v3_clientops;
#endif

+ cl_init.rpcmount = get_rpc_pipefs(data->rpcmount);
+ if (IS_ERR(cl_init.rpcmount)) {
+ dprintk("<-- nfs_init_server() = error %ld\n",
+ PTR_ERR(cl_init.rpcmount));
+ return PTR_ERR(cl_init.rpcmount);
+ }
+
/* Allocate or find a client reference we can use */
clp = nfs_get_client(&cl_init);
+ mntput(cl_init.rpcmount);
if (IS_ERR(clp)) {
dprintk("<-- nfs_init_server() = error %ld\n", PTR_ERR(clp));
return PTR_ERR(clp);
@@ -856,7 +870,7 @@ static int nfs_init_server(struct nfs_server *server,
server->acdirmax = data->acdirmax * HZ;

/* Start lockd here, before we might error out */
- error = nfs_start_lockd(server);
+ error = nfs_start_lockd(server, clp->cl_rpcmount);
if (error < 0)
goto error;

@@ -1265,7 +1279,8 @@ static int nfs4_init_callback(struct nfs_client *clp)
}

error = nfs_callback_up(clp->cl_mvops->minor_version,
- clp->cl_rpcclient->cl_xprt);
+ clp->cl_rpcclient->cl_xprt,
+ clp->cl_rpcmount);
if (error < 0) {
dprintk("%s: failed to start callback. Error = %d\n",
__func__, error);
@@ -1365,7 +1380,8 @@ static int nfs4_set_client(struct nfs_server *server,
const char *ip_addr,
rpc_authflavor_t authflavour,
int proto, const struct rpc_timeout *timeparms,
- u32 minorversion)
+ u32 minorversion,
+ struct vfsmount *rpcmount)
{
struct nfs_client_initdata cl_init = {
.hostname = hostname,
@@ -1374,6 +1390,7 @@ static int nfs4_set_client(struct nfs_server *server,
.rpc_ops = &nfs_v4_clientops,
.proto = proto,
.minorversion = minorversion,
+ .rpcmount = rpcmount,
};
struct nfs_client *clp;
int error;
@@ -1480,6 +1497,7 @@ static int nfs4_init_server(struct nfs_server *server,
const struct nfs_parsed_mount_data *data)
{
struct rpc_timeout timeparms;
+ struct vfsmount *rpcmount;
int error;

dprintk("--> nfs4_init_server()\n");
@@ -1494,6 +1512,11 @@ static int nfs4_init_server(struct nfs_server *server,
server->caps |= NFS_CAP_READDIRPLUS;
server->options = data->options;

+ rpcmount = get_rpc_pipefs(data->rpcmount);
+ if (IS_ERR(rpcmount)) {
+ error = PTR_ERR(rpcmount);
+ goto error;
+ }
/* Get a client record */
error = nfs4_set_client(server,
data->nfs_server.hostname,
@@ -1503,7 +1526,9 @@ static int nfs4_init_server(struct nfs_server *server,
data->auth_flavors[0],
data->nfs_server.protocol,
&timeparms,
- data->minorversion);
+ data->minorversion,
+ rpcmount);
+ mntput(rpcmount);
if (error < 0)
goto error;

@@ -1593,7 +1618,10 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
data->authflavor,
parent_server->client->cl_xprt->prot,
parent_server->client->cl_timeout,
- parent_client->cl_mvops->minor_version);
+ parent_client->cl_mvops->minor_version,
+ parent_client->cl_rpcmount);
+
+
if (error < 0)
goto error;

@@ -1667,7 +1695,7 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
(unsigned long long) server->fsid.major,
(unsigned long long) server->fsid.minor);

- error = nfs_start_lockd(server);
+ error = nfs_start_lockd(server, server->nfs_client->cl_rpcmount);
if (error < 0)
goto out_free_server;

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index cf9fdbd..868acb2 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -86,6 +86,7 @@ struct nfs_parsed_mount_data {
unsigned int version;
unsigned int minorversion;
char *fscache_uniq;
+ char *rpcmount;

struct {
struct sockaddr_storage address;
@@ -120,6 +121,7 @@ struct nfs_mount_request {
int noresvport;
unsigned int *auth_flav_len;
rpc_authflavor_t *auth_flavs;
+ struct vfsmount *rpcmount;
};

extern int nfs_mount(struct nfs_mount_request *info);
@@ -163,10 +165,14 @@ static inline void nfs_fs_proc_exit(void)

/* nfs4namespace.c */
#ifdef CONFIG_NFS_V4
-extern struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry);
+extern struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent,
+ struct dentry *dentry,
+ struct vfsmount *rpcmount);
#else
static inline
-struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry)
+struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent,
+ struct dentry *dentry,
+ struct vfsmount *rpcmount)
{
return ERR_PTR(-ENOENT);
}
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 6227875..205cc02 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -13,7 +13,6 @@
#include <linux/in.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/sched.h>
-#include <linux/sunrpc/rpc_pipe_fs.h>
#include <linux/nfs_fs.h>
#include "internal.h"

@@ -162,7 +161,7 @@ int nfs_mount(struct nfs_mount_request *info)
.program = &mnt_program,
.version = info->version,
.authflavor = RPC_AUTH_UNIX,
- .rpcmount = init_rpc_pipefs,
+ .rpcmount = info->rpcmount,
};
struct rpc_clnt *mnt_clnt;
int status;
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index f32b860..2a2899b 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -143,7 +143,8 @@ struct vfsmount *nfs_d_automount(struct path *path)
}

if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
- mnt = nfs_do_refmount(path->mnt, path->dentry);
+ mnt = nfs_do_refmount(path->mnt, path-&g ...

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