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NFS: Cancel all existing RPC tasks when shutdown

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Walk existing RPC tasks and cancel them with -EIO when the client is
shutdown.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Benjamin Coddington 2023-06-15 14:07:31 -04:00 committed by Trond Myklebust
parent d9615d166c
commit 7d3e26a054
1 changed files with 15 additions and 4 deletions
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19
fs/nfs/sysfs.c
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@ -217,6 +217,17 @@ void nfs_netns_sysfs_destroy(struct nfs_net *netns)
}
}
static bool shutdown_match_client(const struct rpc_task *task, const void *data)
{
return true;
}
static void shutdown_client(struct rpc_clnt *clnt)
{
clnt->cl_shutdown = 1;
rpc_cancel_tasks(clnt, -EIO, shutdown_match_client, NULL);
}
static ssize_t
shutdown_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
@ -247,14 +258,14 @@ shutdown_store(struct kobject *kobj, struct kobj_attribute *attr,
goto out;
server->flags |= NFS_MOUNT_SHUTDOWN;
server->client->cl_shutdown = 1;
server->nfs_client->cl_rpcclient->cl_shutdown = 1;
shutdown_client(server->client);
shutdown_client(server->nfs_client->cl_rpcclient);
if (!IS_ERR(server->client_acl))
server->client_acl->cl_shutdown = 1;
shutdown_client(server->client_acl);
if (server->nlm_host)
server->nlm_host->h_rpcclnt->cl_shutdown = 1;
shutdown_client(server->nlm_host->h_rpcclnt);
out:
return count;
}