[PATCH 5.10 015/111] nfs: make the rpc_stat per net namespace

Greg Kroah-Hartman
2024-05-14T11:46:41Z

From: Josef Bacik <josef@toxicpanda.com>

[ Upstream commit 1548036ef1204df65ca5a16e8b199c858cb80075 ]

Now that we're exposing the rpc stats on a per-network namespace basis,
move this struct into struct nfs_net and use that to make sure only the
per-network namespace stats are exposed.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Stable-dep-of: 24457f1be29f ("nfs: Handle error of rpc_proc_register() in nfs_net_init().")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/nfs/client.c | 5 ++++-
fs/nfs/inode.c | 4 +++-
fs/nfs/internal.h | 2 --
fs/nfs/netns.h | 2 ++
4 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 818ff8b1b99da..1437eb31dd034 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -73,7 +73,6 @@ const struct rpc_program nfs_program = {
.number = NFS_PROGRAM,
.nrvers = ARRAY_SIZE(nfs_version),
.version = nfs_version,
- .stats = &nfs_rpcstat,
.pipe_dir_name = NFS_PIPE_DIRNAME,
};

@@ -501,6 +500,7 @@ int nfs_create_rpc_client(struct nfs_client *clp,
const struct nfs_client_initdata *cl_init,
rpc_authflavor_t flavor)
{
+ struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
struct rpc_clnt *clnt = NULL;
struct rpc_create_args args = {
.net = clp->cl_net,
@@ -512,6 +512,7 @@ int nfs_create_rpc_client(struct nfs_client *clp,
.servername = clp->cl_hostname,
.nodename = cl_init->nodename,
.program = &nfs_program,
+ .stats = &nn->rpcstats,
.version = clp->rpc_ops->version,
.authflavor = flavor,
.cred = cl_init->cred,
@@ -1110,6 +1111,8 @@ void nfs_clients_init(struct net *net)
#endif
spin_lock_init(&nn->nfs_client_lock);
nn->boot_time = ktime_get_real();
+ memset(&nn->rpcstats, 0, sizeof(nn->rpcstats));
+ nn->rpcstats.program = &nfs_program;

nfs_netns_sysfs_setup(nn, net);
}
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 51c721e2f5555..4ae50340c1152 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -2225,8 +2225,10 @@ EXPORT_SYMBOL_GPL(nfs_net_id);

static int nfs_net_init(struct net *net)
{
+ struct nfs_net *nn = net_generic(net, nfs_net_id);
+
nfs_clients_init(net);
- rpc_proc_register(net, &nfs_rpcstat);
+ rpc_proc_register(net, &nn->rpcstats);
return nfs_fs_proc_net_init(net);
}

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index a7e0970b5bfe1..9a72abfb46abc 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -435,8 +435,6 @@ int nfs_try_get_tree(struct fs_context *);
int nfs_get_tree_common(struct fs_context *);
void nfs_kill_super(struct super_block *);

-extern struct rpc_stat nfs_rpcstat;
-
extern int __init register_nfs_fs(void);
extern void __exit unregister_nfs_fs(void);
extern bool nfs_sb_active(struct super_block *sb);
diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h
index c8374f74dce11..a68b21603ea9a 100644
--- a/fs/nfs/netns.h
+++ b/fs/nfs/netns.h
@@ -9,6 +9,7 @@
#include <linux/nfs4.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
+#include <linux/sunrpc/stats.h>

struct bl_dev_msg {
int32_t status;
@@ -34,6 +35,7 @@ struct nfs_net {
struct nfs_netns_client *nfs_client;
spinlock_t nfs_client_lock;
ktime_t boot_time;
+ struct rpc_stat rpcstats;
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_nfsfs;
#endif
--
2.43.0