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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-12-23 15:21:41 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-12-23 15:21:41 -0500 |
| commit | 6dc9d57af9917f5c7faa13c17b770dce17c3972b (patch) | |
| tree | 8d51f023311912eca8b0d9ccd448a0b7176bccba | |
| parent | 028600143079c8e8f8366bbc2eb29977743baf3a (diff) | |
| download | linux-6dc9d57af9917f5c7faa13c17b770dce17c3972b.tar.gz linux-6dc9d57af9917f5c7faa13c17b770dce17c3972b.tar.bz2 linux-6dc9d57af9917f5c7faa13c17b770dce17c3972b.zip | |
NFSv4: Callers to nfs4_get_renew_cred() need to hold nfs_client->cl_lock
Ditto for nfs4_get_setclientid_cred().
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 2 | ||||
| -rw-r--r-- | fs/nfs/nfs4renewd.c | 2 | ||||
| -rw-r--r-- | fs/nfs/nfs4state.c | 20 |
3 files changed, 17 insertions, 7 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index ea790645fda6..0ac6bbb8eaa4 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -202,7 +202,7 @@ extern void nfs4_kill_renewd(struct nfs_client *); extern void nfs4_renew_state(struct work_struct *); /* nfs4state.c */ -struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp); +struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *); extern void nfs4_put_state_owner(struct nfs4_state_owner *); diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c index 3305acbbe2ae..9fe8640a88eb 100644 --- a/fs/nfs/nfs4renewd.c +++ b/fs/nfs/nfs4renewd.c @@ -77,7 +77,7 @@ nfs4_renew_state(struct work_struct *work) timeout = (2 * lease) / 3 + (long)last - (long)now; /* Are we close to a lease timeout? */ if (time_after(now, last + lease/3)) { - cred = nfs4_get_renew_cred(clp); + cred = nfs4_get_renew_cred_locked(clp); if (cred == NULL) { set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); spin_unlock(&clp->cl_lock); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 99182b3229e7..300faba9a18a 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -71,14 +71,12 @@ static int nfs4_init_client(struct nfs_client *clp, struct rpc_cred *cred) return status; } -static struct rpc_cred *nfs4_get_machine_cred(struct nfs_client *clp) +static struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp) { struct rpc_cred *cred = NULL; - spin_lock(&clp->cl_lock); if (clp->cl_machine_cred != NULL) cred = get_rpccred(clp->cl_machine_cred); - spin_unlock(&clp->cl_lock); return cred; } @@ -94,7 +92,7 @@ static void nfs4_clear_machine_cred(struct nfs_client *clp) put_rpccred(cred); } -struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp) +struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp) { struct nfs4_state_owner *sp; struct rb_node *pos; @@ -110,13 +108,24 @@ struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp) return cred; } +static struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp) +{ + struct rpc_cred *cred; + + spin_lock(&clp->cl_lock); + cred = nfs4_get_renew_cred_locked(clp); + spin_unlock(&clp->cl_lock); + return cred; +} + static struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp) { struct nfs4_state_owner *sp; struct rb_node *pos; struct rpc_cred *cred; - cred = nfs4_get_machine_cred(clp); + spin_lock(&clp->cl_lock); + cred = nfs4_get_machine_cred_locked(clp); if (cred != NULL) goto out; pos = rb_first(&clp->cl_state_owners); @@ -125,6 +134,7 @@ static struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp) cred = get_rpccred(sp->so_cred); } out: + spin_unlock(&clp->cl_lock); return cred; } |