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authorTrond Myklebust <Trond.Myklebust@netapp.com>2009-12-05 19:32:11 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2009-12-05 19:32:11 -0500
commitf26468fb9384e73fb357d2e84d3e9c88c7d1129d (patch)
tree453ab2ea84473a1f52d0400c628d8ad9fd95d8c8 /fs/nfs
parentda6ebfe34a3921cfb47b938fb819abc78c6080e5 (diff)
NFSv41: Fix nfs4_proc_create_session
We should not assume that nfs41_init_clientid() will always want to initialise the session. If it is being called due to a server reboot, then we just want to reset the session after re-establishing the clientid. Fix this by getting rid of the 'reset' parameter in nfs4_proc_create_session(), and instead relying on whether or not the session slot table pointer is non-NULL. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/nfs4_fs.h2
-rw-r--r--fs/nfs/nfs4proc.c60
-rw-r--r--fs/nfs/nfs4state.c4
3 files changed, 27 insertions, 39 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 90923223a7c1..50dd55069d3d 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -222,7 +222,7 @@ extern int nfs4_setup_sequence(struct nfs_client *clp,
int cache_reply, struct rpc_task *task);
extern void nfs4_destroy_session(struct nfs4_session *session);
extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp);
-extern int nfs4_proc_create_session(struct nfs_client *, int reset);
+extern int nfs4_proc_create_session(struct nfs_client *);
extern int nfs4_proc_destroy_session(struct nfs4_session *);
extern int nfs4_init_session(struct nfs_server *server);
#else /* CONFIG_NFS_v4_1 */
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 206ce30a595d..be96d28baccf 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4501,7 +4501,6 @@ static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, int max_slots,
spin_lock(&tbl->slot_tbl_lock);
for (i = 0; i < max_slots; ++i)
tbl->slots[i].seq_nr = ivalue;
- tbl->highest_used_slotid = -1;
spin_unlock(&tbl->slot_tbl_lock);
dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
tbl, tbl->slots, tbl->max_slots);
@@ -4552,7 +4551,6 @@ static void nfs4_destroy_slot_tables(struct nfs4_session *session)
static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
int max_slots, int ivalue)
{
- int i;
struct nfs4_slot *slot;
int ret = -ENOMEM;
@@ -4563,18 +4561,9 @@ static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_KERNEL);
if (!slot)
goto out;
- for (i = 0; i < max_slots; ++i)
- slot[i].seq_nr = ivalue;
ret = 0;
spin_lock(&tbl->slot_tbl_lock);
- if (tbl->slots != NULL) {
- spin_unlock(&tbl->slot_tbl_lock);
- dprintk("%s: slot table already initialized. tbl=%p slots=%p\n",
- __func__, tbl, tbl->slots);
- WARN_ON(1);
- goto out_free;
- }
tbl->max_slots = max_slots;
tbl->slots = slot;
tbl->highest_used_slotid = -1; /* no slot is currently used */
@@ -4584,10 +4573,6 @@ static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
out:
dprintk("<-- %s: return %d\n", __func__, ret);
return ret;
-
-out_free:
- kfree(slot);
- goto out;
}
/*
@@ -4595,17 +4580,24 @@ out_free:
*/
static int nfs4_init_slot_tables(struct nfs4_session *session)
{
- int status;
+ struct nfs4_slot_table *tbl;
+ int status = 0;
- status = nfs4_init_slot_table(&session->fc_slot_table,
- session->fc_attrs.max_reqs, 1);
- if (status)
- return status;
+ tbl = &session->fc_slot_table;
+ if (tbl->slots == NULL) {
+ status = nfs4_init_slot_table(tbl,
+ session->fc_attrs.max_reqs, 1);
+ if (status)
+ return status;
+ }
- status = nfs4_init_slot_table(&session->bc_slot_table,
- session->bc_attrs.max_reqs, 0);
- if (status)
- nfs4_destroy_slot_tables(session);
+ tbl = &session->bc_slot_table;
+ if (tbl->slots == NULL) {
+ status = nfs4_init_slot_table(tbl,
+ session->bc_attrs.max_reqs, 0);
+ if (status)
+ nfs4_destroy_slot_tables(session);
+ }
return status;
}
@@ -4784,7 +4776,7 @@ static int _nfs4_proc_create_session(struct nfs_client *clp)
* It is the responsibility of the caller to verify the session is
* expired before calling this routine.
*/
-int nfs4_proc_create_session(struct nfs_client *clp, int reset)
+int nfs4_proc_create_session(struct nfs_client *clp)
{
int status;
unsigned *ptr;
@@ -4797,12 +4789,13 @@ int nfs4_proc_create_session(struct nfs_client *clp, int reset)
if (status)
goto out;
- /* Init or reset the fore channel */
- if (reset)
- status = nfs4_reset_slot_tables(session);
- else
- status = nfs4_init_slot_tables(session);
- dprintk("fore channel slot table initialization returned %d\n", status);
+ /* Init and reset the fore channel */
+ status = nfs4_init_slot_tables(session);
+ dprintk("slot table initialization returned %d\n", status);
+ if (status)
+ goto out;
+ status = nfs4_reset_slot_tables(session);
+ dprintk("slot table reset returned %d\n", status);
if (status)
goto out;
@@ -4810,10 +4803,6 @@ int nfs4_proc_create_session(struct nfs_client *clp, int reset)
dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
- if (reset)
- /* Lease time is aleady set */
- goto out;
-
/* Get the lease time */
status = nfs4_proc_get_lease_time(clp, &fsinfo);
if (status == 0) {
@@ -4821,7 +4810,6 @@ int nfs4_proc_create_session(struct nfs_client *clp, int reset)
spin_lock(&clp->cl_lock);
clp->cl_lease_time = fsinfo.lease_time * HZ;
clp->cl_last_renewal = jiffies;
- clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
spin_unlock(&clp->cl_lock);
nfs4_schedule_state_renewal(clp);
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 873dda7fec3e..37f020eb92f2 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -123,7 +123,7 @@ int nfs41_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
status = nfs4_proc_exchange_id(clp, cred);
if (status == 0)
/* create session schedules state renewal upon success */
- status = nfs4_proc_create_session(clp, 0);
+ status = nfs4_proc_create_session(clp);
if (status == 0)
nfs_mark_client_ready(clp, NFS_CS_READY);
return status;
@@ -1240,7 +1240,7 @@ static int nfs4_reset_session(struct nfs_client *clp)
}
memset(clp->cl_session->sess_id.data, 0, NFS4_MAX_SESSIONID_LEN);
- status = nfs4_proc_create_session(clp, 1);
+ status = nfs4_proc_create_session(clp);
if (status)
nfs4_session_recovery_handle_error(clp, status);
/* fall through*/