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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-04-23 15:52:14 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-04-23 15:52:14 -0400
commitb0212b84fb19cf89305ab96c73abdf3a76d05ef8 (patch)
tree429daec3f580ad8f4c39e90f212d259b19ba9394 /fs/nfs
parentbd1d421abcaae1b84ba377ea4c33bba31d654199 (diff)
parenteb04e0ac198cec3bab407ad220438dfa65c19c67 (diff)
Merge branch 'bugfixes' into linux-next
Fix up a conflict between the linux-next branch and mainline. Conflicts: fs/nfs/nfs4proc.c
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/nfs4client.c45
-rw-r--r--fs/nfs/nfs4proc.c1
-rw-r--r--fs/nfs/nfs4state.c8
3 files changed, 37 insertions, 17 deletions
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index c2b069e25819..947b0c908aa9 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -304,7 +304,7 @@ int nfs40_walk_client_list(struct nfs_client *new,
struct rpc_cred *cred)
{
struct nfs_net *nn = net_generic(new->cl_net, nfs_net_id);
- struct nfs_client *pos, *n, *prev = NULL;
+ struct nfs_client *pos, *prev = NULL;
struct nfs4_setclientid_res clid = {
.clientid = new->cl_clientid,
.confirm = new->cl_confirm,
@@ -312,10 +312,23 @@ int nfs40_walk_client_list(struct nfs_client *new,
int status = -NFS4ERR_STALE_CLIENTID;
spin_lock(&nn->nfs_client_lock);
- list_for_each_entry_safe(pos, n, &nn->nfs_client_list, cl_share_link) {
+ list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) {
/* If "pos" isn't marked ready, we can't trust the
* remaining fields in "pos" */
- if (pos->cl_cons_state < NFS_CS_READY)
+ if (pos->cl_cons_state > NFS_CS_READY) {
+ atomic_inc(&pos->cl_count);
+ spin_unlock(&nn->nfs_client_lock);
+
+ if (prev)
+ nfs_put_client(prev);
+ prev = pos;
+
+ status = nfs_wait_client_init_complete(pos);
+ spin_lock(&nn->nfs_client_lock);
+ if (status < 0)
+ continue;
+ }
+ if (pos->cl_cons_state != NFS_CS_READY)
continue;
if (pos->rpc_ops != new->rpc_ops)
@@ -427,16 +440,16 @@ int nfs41_walk_client_list(struct nfs_client *new,
struct rpc_cred *cred)
{
struct nfs_net *nn = net_generic(new->cl_net, nfs_net_id);
- struct nfs_client *pos, *n, *prev = NULL;
+ struct nfs_client *pos, *prev = NULL;
int status = -NFS4ERR_STALE_CLIENTID;
spin_lock(&nn->nfs_client_lock);
- list_for_each_entry_safe(pos, n, &nn->nfs_client_list, cl_share_link) {
+ list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) {
/* If "pos" isn't marked ready, we can't trust the
* remaining fields in "pos", especially the client
* ID and serverowner fields. Wait for CREATE_SESSION
* to finish. */
- if (pos->cl_cons_state < NFS_CS_READY) {
+ if (pos->cl_cons_state > NFS_CS_READY) {
atomic_inc(&pos->cl_count);
spin_unlock(&nn->nfs_client_lock);
@@ -444,18 +457,17 @@ int nfs41_walk_client_list(struct nfs_client *new,
nfs_put_client(prev);
prev = pos;
- nfs4_schedule_lease_recovery(pos);
status = nfs_wait_client_init_complete(pos);
- if (status < 0) {
- nfs_put_client(pos);
- spin_lock(&nn->nfs_client_lock);
- continue;
+ if (status == 0) {
+ nfs4_schedule_lease_recovery(pos);
+ status = nfs4_wait_clnt_recover(pos);
}
- status = pos->cl_cons_state;
spin_lock(&nn->nfs_client_lock);
if (status < 0)
continue;
}
+ if (pos->cl_cons_state != NFS_CS_READY)
+ continue;
if (pos->rpc_ops != new->rpc_ops)
continue;
@@ -473,17 +485,18 @@ int nfs41_walk_client_list(struct nfs_client *new,
continue;
atomic_inc(&pos->cl_count);
- spin_unlock(&nn->nfs_client_lock);
+ *result = pos;
+ status = 0;
dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
__func__, pos, atomic_read(&pos->cl_count));
-
- *result = pos;
- return 0;
+ break;
}
/* No matching nfs_client found. */
spin_unlock(&nn->nfs_client_lock);
dprintk("NFS: <-- %s status = %d\n", __func__, status);
+ if (prev)
+ nfs_put_client(prev);
return status;
}
#endif /* CONFIG_NFS_V4_1 */
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index e13b7ccee98d..3bc847ce4838 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1102,6 +1102,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
/* Save the delegation */
nfs4_stateid_copy(&stateid, &delegation->stateid);
rcu_read_unlock();
+ nfs_release_seqid(opendata->o_arg.seqid);
if (!opendata->is_recover) {
ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
if (ret != 0)
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 7a74ea64bf54..0b32f9483b7a 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1897,7 +1897,13 @@ again:
status = PTR_ERR(clnt);
break;
}
- clp->cl_rpcclient = clnt;
+ /* Note: this is safe because we haven't yet marked the
+ * client as ready, so we are the only user of
+ * clp->cl_rpcclient
+ */
+ clnt = xchg(&clp->cl_rpcclient, clnt);
+ rpc_shutdown_client(clnt);
+ clnt = clp->cl_rpcclient;
goto again;
case -NFS4ERR_MINOR_VERS_MISMATCH: