diff options
| author | NeilBrown <neilb@suse.com> | 2018-12-03 03:30:30 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2018-12-19 21:52:45 +0300 |
| commit | a534ecb013bfc58a7f03653c7f2976bc341da98f (patch) | |
| tree | 55d3c1b4a992afc33c28b5d1d4e37943de4b1389 /fs/nfs/client.c | |
| parent | 1a80810fbf238e6dbaaaa5262a76d328ace21376 (diff) | |
| download | linux-a534ecb013bfc58a7f03653c7f2976bc341da98f.tar.xz | |
NFSv4: add cl_root_cred for use when machine cred is not available.
NFSv4 state management tries a root credential when no machine
credential is available, as can happen with kerberos.
It does this by replacing the cl_machine_cred with a root credential.
This means that any user of the machine credential needs to take
a lock while getting a reference to the machine credential, which is
a little cumbersome.
So introduce an explicit cl_root_cred, and never free either
credential until client shutdown. This means that no locking
is needed to reference these credentials. Future patches
will make use of this.
This is only a temporary addition. both cl_machine_cred and
cl_root_cred will disappear later in the series.
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/client.c')
| -rw-r--r-- | fs/nfs/client.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 96d5f8135eb9..cce151776709 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -248,6 +248,8 @@ void nfs_free_client(struct nfs_client *clp) if (clp->cl_machine_cred != NULL) put_rpccred(clp->cl_machine_cred); + if (clp->cl_root_cred != NULL) + put_rpccred(clp->cl_root_cred); put_net(clp->cl_net); put_nfs_version(clp->cl_nfs_mod); |