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nfs: add a refcount tracker for struct net as held by the nfs_client

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These are long-held references to the netns, so make sure the refcount
tracker is aware of them.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
This commit is contained in:
Jeff Layton 2025-04-08 09:43:15 -04:00 committed by Anna Schumaker
parent fadc0f3bb2
commit e5296637a3
2 changed files with 3 additions and 2 deletions
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4
fs/nfs/client.c
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@ -180,7 +180,7 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
clp->cl_proto = cl_init->proto;
clp->cl_nconnect = cl_init->nconnect;
clp->cl_max_connect = cl_init->max_connect ? cl_init->max_connect : 1;
clp->cl_net = get_net(cl_init->net);
clp->cl_net = get_net_track(cl_init->net, &clp->cl_ns_tracker, GFP_KERNEL);
#if IS_ENABLED(CONFIG_NFS_LOCALIO)
seqlock_init(&clp->cl_boot_lock);
@ -250,7 +250,7 @@ void nfs_free_client(struct nfs_client *clp)
if (!IS_ERR(clp->cl_rpcclient))
rpc_shutdown_client(clp->cl_rpcclient);
put_net(clp->cl_net);
put_net_track(clp->cl_net, &clp->cl_ns_tracker);
put_nfs_version(clp->cl_nfs_mod);
kfree(clp->cl_hostname);
kfree(clp->cl_acceptor);

1
include/linux/nfs_fs_sb.h
View File

@ -125,6 +125,7 @@ struct nfs_client {
*/
char cl_ipaddr[48];
struct net *cl_net;
netns_tracker cl_ns_tracker;
struct list_head pending_cb_stateids;
struct rcu_head rcu;