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Diffstat (limited to 'fs/nfs/nfs4state.c')
-rw-r--r--fs/nfs/nfs4state.c903
1 files changed, 666 insertions, 237 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 55148def554..848f6853c59 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -51,19 +51,22 @@
#include <linux/bitops.h>
#include <linux/jiffies.h>
+#include <linux/sunrpc/clnt.h>
+
#include "nfs4_fs.h"
#include "callback.h"
#include "delegation.h"
#include "internal.h"
+#include "nfs4session.h"
#include "pnfs.h"
+#include "netns.h"
#define NFSDBG_FACILITY NFSDBG_STATE
#define OPENOWNER_POOL_SIZE 8
const nfs4_stateid zero_stateid;
-
-static LIST_HEAD(nfs4_clientid_list);
+static DEFINE_MUTEX(nfs_clid_init_mutex);
int nfs4_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
{
@@ -73,12 +76,13 @@ int nfs4_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
};
unsigned short port;
int status;
+ struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
if (test_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state))
goto do_confirm;
- port = nfs_callback_tcpport;
+ port = nn->nfs_callback_tcpport;
if (clp->cl_addr.ss_family == AF_INET6)
- port = nfs_callback_tcpport6;
+ port = nn->nfs_callback_tcpport6;
status = nfs4_proc_setclientid(clp, NFS4_CALLBACK, port, cred, &clid);
if (status != 0)
@@ -96,6 +100,51 @@ out:
return status;
}
+/**
+ * nfs40_discover_server_trunking - Detect server IP address trunking (mv0)
+ *
+ * @clp: nfs_client under test
+ * @result: OUT: found nfs_client, or clp
+ * @cred: credential to use for trunking test
+ *
+ * Returns zero, a negative errno, or a negative NFS4ERR status.
+ * If zero is returned, an nfs_client pointer is planted in
+ * "result".
+ *
+ * Note: The returned client may not yet be marked ready.
+ */
+int nfs40_discover_server_trunking(struct nfs_client *clp,
+ struct nfs_client **result,
+ struct rpc_cred *cred)
+{
+ struct nfs4_setclientid_res clid = {
+ .clientid = clp->cl_clientid,
+ .confirm = clp->cl_confirm,
+ };
+ struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
+ unsigned short port;
+ int status;
+
+ port = nn->nfs_callback_tcpport;
+ if (clp->cl_addr.ss_family == AF_INET6)
+ port = nn->nfs_callback_tcpport6;
+
+ status = nfs4_proc_setclientid(clp, NFS4_CALLBACK, port, cred, &clid);
+ if (status != 0)
+ goto out;
+ clp->cl_clientid = clid.clientid;
+ clp->cl_confirm = clid.confirm;
+
+ status = nfs40_walk_client_list(clp, result, cred);
+ if (status == 0) {
+ /* Sustain the lease, even if it's empty. If the clientid4
+ * goes stale it's of no use for trunking discovery. */
+ nfs4_schedule_state_renewal(*result);
+ }
+out:
+ return status;
+}
+
struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp)
{
struct rpc_cred *cred = NULL;
@@ -105,13 +154,14 @@ struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp)
return cred;
}
-static void nfs4_clear_machine_cred(struct nfs_client *clp)
+static void nfs4_root_machine_cred(struct nfs_client *clp)
{
- struct rpc_cred *cred;
+ struct rpc_cred *cred, *new;
+ new = rpc_lookup_machine_cred(NULL);
spin_lock(&clp->cl_lock);
cred = clp->cl_machine_cred;
- clp->cl_machine_cred = NULL;
+ clp->cl_machine_cred = new;
spin_unlock(&clp->cl_lock);
if (cred != NULL)
put_rpccred(cred);
@@ -165,64 +215,36 @@ out:
return cred;
}
-#if defined(CONFIG_NFS_V4_1)
-
-static int nfs41_setup_state_renewal(struct nfs_client *clp)
+static void nfs4_end_drain_slot_table(struct nfs4_slot_table *tbl)
{
- int status;
- struct nfs_fsinfo fsinfo;
-
- if (!test_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state)) {
- nfs4_schedule_state_renewal(clp);
- return 0;
- }
-
- status = nfs4_proc_get_lease_time(clp, &fsinfo);
- if (status == 0) {
- /* Update lease time and schedule renewal */
- spin_lock(&clp->cl_lock);
- clp->cl_lease_time = fsinfo.lease_time * HZ;
- clp->cl_last_renewal = jiffies;
- spin_unlock(&clp->cl_lock);
-
- nfs4_schedule_state_renewal(clp);
+ if (test_and_clear_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state)) {
+ spin_lock(&tbl->slot_tbl_lock);
+ nfs41_wake_slot_table(tbl);
+ spin_unlock(&tbl->slot_tbl_lock);
}
-
- return status;
}
-/*
- * Back channel returns NFS4ERR_DELAY for new requests when
- * NFS4_SESSION_DRAINING is set so there is no work to be done when draining
- * is ended.
- */
static void nfs4_end_drain_session(struct nfs_client *clp)
{
struct nfs4_session *ses = clp->cl_session;
- struct nfs4_slot_table *tbl;
- int max_slots;
- if (ses == NULL)
+ if (clp->cl_slot_tbl) {
+ nfs4_end_drain_slot_table(clp->cl_slot_tbl);
return;
- tbl = &ses->fc_slot_table;
- if (test_and_clear_bit(NFS4_SESSION_DRAINING, &ses->session_state)) {
- spin_lock(&tbl->slot_tbl_lock);
- max_slots = tbl->max_slots;
- while (max_slots--) {
- if (rpc_wake_up_first(&tbl->slot_tbl_waitq,
- nfs4_set_task_privileged,
- NULL) == NULL)
- break;
- }
- spin_unlock(&tbl->slot_tbl_lock);
+ }
+
+ if (ses != NULL) {
+ nfs4_end_drain_slot_table(&ses->bc_slot_table);
+ nfs4_end_drain_slot_table(&ses->fc_slot_table);
}
}
-static int nfs4_wait_on_slot_tbl(struct nfs4_slot_table *tbl)
+static int nfs4_drain_slot_tbl(struct nfs4_slot_table *tbl)
{
+ set_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state);
spin_lock(&tbl->slot_tbl_lock);
if (tbl->highest_used_slotid != NFS4_NO_SLOT) {
- INIT_COMPLETION(tbl->complete);
+ reinit_completion(&tbl->complete);
spin_unlock(&tbl->slot_tbl_lock);
return wait_for_completion_interruptible(&tbl->complete);
}
@@ -235,13 +257,41 @@ static int nfs4_begin_drain_session(struct nfs_client *clp)
struct nfs4_session *ses = clp->cl_session;
int ret = 0;
- set_bit(NFS4_SESSION_DRAINING, &ses->session_state);
+ if (clp->cl_slot_tbl)
+ return nfs4_drain_slot_tbl(clp->cl_slot_tbl);
+
/* back channel */
- ret = nfs4_wait_on_slot_tbl(&ses->bc_slot_table);
+ ret = nfs4_drain_slot_tbl(&ses->bc_slot_table);
if (ret)
return ret;
/* fore channel */
- return nfs4_wait_on_slot_tbl(&ses->fc_slot_table);
+ return nfs4_drain_slot_tbl(&ses->fc_slot_table);
+}
+
+#if defined(CONFIG_NFS_V4_1)
+
+static int nfs41_setup_state_renewal(struct nfs_client *clp)
+{
+ int status;
+ struct nfs_fsinfo fsinfo;
+
+ if (!test_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state)) {
+ nfs4_schedule_state_renewal(clp);
+ return 0;
+ }
+
+ status = nfs4_proc_get_lease_time(clp, &fsinfo);
+ if (status == 0) {
+ /* Update lease time and schedule renewal */
+ spin_lock(&clp->cl_lock);
+ clp->cl_lease_time = fsinfo.lease_time * HZ;
+ clp->cl_last_renewal = jiffies;
+ spin_unlock(&clp->cl_lock);
+
+ nfs4_schedule_state_renewal(clp);
+ }
+
+ return status;
}
static void nfs41_finish_session_reset(struct nfs_client *clp)
@@ -249,7 +299,6 @@ static void nfs41_finish_session_reset(struct nfs_client *clp)
clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
/* create_session negotiated new slot table */
- clear_bit(NFS4CLNT_RECALL_SLOT, &clp->cl_state);
clear_bit(NFS4CLNT_BIND_CONN_TO_SESSION, &clp->cl_state);
nfs41_setup_state_renewal(clp);
}
@@ -275,62 +324,48 @@ out:
return status;
}
-struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp)
+/**
+ * nfs41_discover_server_trunking - Detect server IP address trunking (mv1)
+ *
+ * @clp: nfs_client under test
+ * @result: OUT: found nfs_client, or clp
+ * @cred: credential to use for trunking test
+ *
+ * Returns NFS4_OK, a negative errno, or a negative NFS4ERR status.
+ * If NFS4_OK is returned, an nfs_client pointer is planted in
+ * "result".
+ *
+ * Note: The returned client may not yet be marked ready.
+ */
+int nfs41_discover_server_trunking(struct nfs_client *clp,
+ struct nfs_client **result,
+ struct rpc_cred *cred)
{
- struct rpc_cred *cred;
+ int status;
- spin_lock(&clp->cl_lock);
- cred = nfs4_get_machine_cred_locked(clp);
- spin_unlock(&clp->cl_lock);
- return cred;
+ status = nfs4_proc_exchange_id(clp, cred);
+ if (status != NFS4_OK)
+ return status;
+ set_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
+
+ return nfs41_walk_client_list(clp, result, cred);
}
#endif /* CONFIG_NFS_V4_1 */
-static struct rpc_cred *
-nfs4_get_setclientid_cred_server(struct nfs_server *server)
-{
- struct nfs_client *clp = server->nfs_client;
- struct rpc_cred *cred = NULL;
- struct nfs4_state_owner *sp;
- struct rb_node *pos;
-
- spin_lock(&clp->cl_lock);
- pos = rb_first(&server->state_owners);
- if (pos != NULL) {
- sp = rb_entry(pos, struct nfs4_state_owner, so_server_node);
- cred = get_rpccred(sp->so_cred);
- }
- spin_unlock(&clp->cl_lock);
- return cred;
-}
-
/**
- * nfs4_get_setclientid_cred - Acquire credential for a setclientid operation
+ * nfs4_get_clid_cred - Acquire credential for a setclientid operation
* @clp: client state handle
*
* Returns an rpc_cred with reference count bumped, or NULL.
*/
-struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp)
+struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp)
{
- struct nfs_server *server;
struct rpc_cred *cred;
spin_lock(&clp->cl_lock);
cred = nfs4_get_machine_cred_locked(clp);
spin_unlock(&clp->cl_lock);
- if (cred != NULL)
- goto out;
-
- rcu_read_lock();
- list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
- cred = nfs4_get_setclientid_cred_server(server);
- if (cred != NULL)
- break;
- }
- rcu_read_unlock();
-
-out:
return cred;
}
@@ -440,6 +475,8 @@ nfs4_alloc_state_owner(struct nfs_server *server,
nfs4_init_seqid_counter(&sp->so_seqid);
atomic_set(&sp->so_count, 1);
INIT_LIST_HEAD(&sp->so_lru);
+ seqcount_init(&sp->so_reclaim_seqcount);
+ mutex_init(&sp->so_delegreturn_mutex);
return sp;
}
@@ -619,6 +656,8 @@ __nfs4_find_state_byowner(struct inode *inode, struct nfs4_state_owner *owner)
list_for_each_entry(state, &nfsi->open_states, inode_states) {
if (state->owner != owner)
continue;
+ if (!nfs4_valid_open_stateid(state))
+ continue;
if (atomic_inc_not_zero(&state->count))
return state;
}
@@ -729,11 +768,8 @@ static void __nfs4_close(struct nfs4_state *state,
if (!call_close) {
nfs4_put_open_state(state);
nfs4_put_state_owner(owner);
- } else {
- bool roc = pnfs_roc(state->inode);
-
- nfs4_do_close(state, gfp_mask, wait, roc);
- }
+ } else
+ nfs4_do_close(state, gfp_mask, wait);
}
void nfs4_close_state(struct nfs4_state *state, fmode_t fmode)
@@ -854,6 +890,7 @@ static struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_
*/
void nfs4_put_lock_state(struct nfs4_lock_state *lsp)
{
+ struct nfs_server *server;
struct nfs4_state *state;
if (lsp == NULL)
@@ -865,11 +902,13 @@ void nfs4_put_lock_state(struct nfs4_lock_state *lsp)
if (list_empty(&state->lock_states))
clear_bit(LK_STATE_IN_USE, &state->flags);
spin_unlock(&state->state_lock);
- if (lsp->ls_flags & NFS_LOCK_INITIALIZED) {
- if (nfs4_release_lockowner(lsp) == 0)
- return;
- }
- nfs4_free_lock_state(lsp->ls_state->owner->so_server, lsp);
+ server = state->owner->so_server;
+ if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) {
+ struct nfs_client *clp = server->nfs_client;
+
+ clp->cl_mvops->free_lock_state(server, lsp);
+ } else
+ nfs4_free_lock_state(server, lsp);
}
static void nfs4_fl_copy_lock(struct file_lock *dst, struct file_lock *src)
@@ -910,20 +949,31 @@ int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl)
return 0;
}
-static bool nfs4_copy_lock_stateid(nfs4_stateid *dst, struct nfs4_state *state,
- fl_owner_t fl_owner, pid_t fl_pid)
+static int nfs4_copy_lock_stateid(nfs4_stateid *dst,
+ struct nfs4_state *state,
+ const struct nfs_lockowner *lockowner)
{
struct nfs4_lock_state *lsp;
- bool ret = false;
+ fl_owner_t fl_owner;
+ pid_t fl_pid;
+ int ret = -ENOENT;
+
+
+ if (lockowner == NULL)
+ goto out;
if (test_bit(LK_STATE_IN_USE, &state->flags) == 0)
goto out;
+ fl_owner = lockowner->l_owner;
+ fl_pid = lockowner->l_pid;
spin_lock(&state->state_lock);
lsp = __nfs4_find_lock_state(state, fl_owner, fl_pid, NFS4_ANY_LOCK_TYPE);
- if (lsp != NULL && (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) {
+ if (lsp && test_bit(NFS_LOCK_LOST, &lsp->ls_flags))
+ ret = -EIO;
+ else if (lsp != NULL && test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) {
nfs4_stateid_copy(dst, &lsp->ls_stateid);
- ret = true;
+ ret = 0;
}
spin_unlock(&state->state_lock);
nfs4_put_lock_state(lsp);
@@ -933,11 +983,15 @@ out:
static void nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state)
{
+ const nfs4_stateid *src;
int seq;
do {
+ src = &zero_stateid;
seq = read_seqbegin(&state->seqlock);
- nfs4_stateid_copy(dst, &state->stateid);
+ if (test_bit(NFS_OPEN_STATE, &state->flags))
+ src = &state->open_stateid;
+ nfs4_stateid_copy(dst, src);
} while (read_seqretry(&state->seqlock, seq));
}
@@ -945,14 +999,30 @@ static void nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state)
* Byte-range lock aware utility to initialize the stateid of read/write
* requests.
*/
-void nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state,
- fmode_t fmode, fl_owner_t fl_owner, pid_t fl_pid)
+int nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state,
+ fmode_t fmode, const struct nfs_lockowner *lockowner)
{
- if (nfs4_copy_delegation_stateid(dst, state->inode, fmode))
- return;
- if (nfs4_copy_lock_stateid(dst, state, fl_owner, fl_pid))
- return;
+ int ret = nfs4_copy_lock_stateid(dst, state, lockowner);
+ if (ret == -EIO)
+ /* A lost lock - don't even consider delegations */
+ goto out;
+ /* returns true if delegation stateid found and copied */
+ if (nfs4_copy_delegation_stateid(dst, state->inode, fmode)) {
+ ret = 0;
+ goto out;
+ }
+ if (ret != -ENOENT)
+ /* nfs4_copy_delegation_stateid() didn't over-write
+ * dst, so it still has the lock stateid which we now
+ * choose to use.
+ */
+ goto out;
nfs4_copy_open_stateid(dst, state);
+ ret = 0;
+out:
+ if (nfs_server_capable(state->inode, NFS_CAP_STATEID_NFSV41))
+ dst->seqid = 0;
+ return ret;
}
struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask)
@@ -996,11 +1066,10 @@ void nfs_free_seqid(struct nfs_seqid *seqid)
/*
* Increment the seqid if the OPEN/OPEN_DOWNGRADE/CLOSE succeeded, or
* failed with a seqid incrementing error -
- * see comments nfs_fs.h:seqid_mutating_error()
+ * see comments nfs4.h:seqid_mutating_error()
*/
static void nfs_increment_seqid(int status, struct nfs_seqid *seqid)
{
- BUG_ON(list_first_entry(&seqid->sequence->list, struct nfs_seqid, list) != seqid);
switch (status) {
case 0:
break;
@@ -1042,7 +1111,7 @@ void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid)
/*
* Increment the seqid if the LOCK/LOCKU succeeded, or
* failed with a seqid incrementing error -
- * see comments nfs_fs.h:seqid_mutating_error()
+ * see comments nfs4.h:seqid_mutating_error()
*/
void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid)
{
@@ -1071,9 +1140,9 @@ static int nfs4_run_state_manager(void *);
static void nfs4_clear_state_manager_bit(struct nfs_client *clp)
{
- smp_mb__before_clear_bit();
+ smp_mb__before_atomic();
clear_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state);
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
wake_up_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING);
rpc_wake_up(&clp->cl_rpcwaitq);
}
@@ -1098,7 +1167,7 @@ void nfs4_schedule_state_manager(struct nfs_client *clp)
snprintf(buf, sizeof(buf), "%s-manager",
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
rcu_read_unlock();
- task = kthread_run(nfs4_run_state_manager, clp, buf);
+ task = kthread_run(nfs4_run_state_manager, clp, "%s", buf);
if (IS_ERR(task)) {
printk(KERN_ERR "%s: kthread_run: %ld\n",
__func__, PTR_ERR(task));
@@ -1123,6 +1192,94 @@ void nfs4_schedule_lease_recovery(struct nfs_client *clp)
}
EXPORT_SYMBOL_GPL(nfs4_schedule_lease_recovery);
+/**
+ * nfs4_schedule_migration_recovery - trigger migration recovery
+ *
+ * @server: FSID that is migrating
+ *
+ * Returns zero if recovery has started, otherwise a negative NFS4ERR
+ * value is returned.
+ */
+int nfs4_schedule_migration_recovery(const struct nfs_server *server)
+{
+ struct nfs_client *clp = server->nfs_client;
+
+ if (server->fh_expire_type != NFS4_FH_PERSISTENT) {
+ pr_err("NFS: volatile file handles not supported (server %s)\n",
+ clp->cl_hostname);
+ return -NFS4ERR_IO;
+ }
+
+ if (test_bit(NFS_MIG_FAILED, &server->mig_status))
+ return -NFS4ERR_IO;
+
+ dprintk("%s: scheduling migration recovery for (%llx:%llx) on %s\n",
+ __func__,
+ (unsigned long long)server->fsid.major,
+ (unsigned long long)server->fsid.minor,
+ clp->cl_hostname);
+
+ set_bit(NFS_MIG_IN_TRANSITION,
+ &((struct nfs_server *)server)->mig_status);
+ set_bit(NFS4CLNT_MOVED, &clp->cl_state);
+
+ nfs4_schedule_state_manager(clp);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(nfs4_schedule_migration_recovery);
+
+/**
+ * nfs4_schedule_lease_moved_recovery - start lease-moved recovery
+ *
+ * @clp: server to check for moved leases
+ *
+ */
+void nfs4_schedule_lease_moved_recovery(struct nfs_client *clp)
+{
+ dprintk("%s: scheduling lease-moved recovery for client ID %llx on %s\n",
+ __func__, clp->cl_clientid, clp->cl_hostname);
+
+ set_bit(NFS4CLNT_LEASE_MOVED, &clp->cl_state);
+ nfs4_schedule_state_manager(clp);
+}
+EXPORT_SYMBOL_GPL(nfs4_schedule_lease_moved_recovery);
+
+int nfs4_wait_clnt_recover(struct nfs_client *clp)
+{
+ int res;
+
+ might_sleep();
+
+ atomic_inc(&clp->cl_count);
+ res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING,
+ nfs_wait_bit_killable, TASK_KILLABLE);
+ if (res)
+ goto out;
+ if (clp->cl_cons_state < 0)
+ res = clp->cl_cons_state;
+out:
+ nfs_put_client(clp);
+ return res;
+}
+
+int nfs4_client_recover_expired_lease(struct nfs_client *clp)
+{
+ unsigned int loop;
+ int ret;
+
+ for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
+ ret = nfs4_wait_clnt_recover(clp);
+ if (ret != 0)
+ break;
+ if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
+ !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))
+ break;
+ nfs4_schedule_state_manager(clp);
+ ret = -EIO;
+ }
+ return ret;
+}
+
/*
* nfs40_handle_cb_pathdown - return all delegations after NFS4ERR_CB_PATH_DOWN
* @clp: client to process
@@ -1159,7 +1316,7 @@ static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_st
return 1;
}
-static int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state)
+int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state)
{
set_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags);
clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags);
@@ -1168,14 +1325,17 @@ static int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_s
return 1;
}
-void nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4_state *state)
+int nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4_state *state)
{
struct nfs_client *clp = server->nfs_client;
+ if (!nfs4_valid_open_stateid(state))
+ return -EBADF;
nfs4_state_mark_reclaim_nograce(clp, state);
dprintk("%s: scheduling stateid recovery for server %s\n", __func__,
clp->cl_hostname);
nfs4_schedule_state_manager(clp);
+ return 0;
}
EXPORT_SYMBOL_GPL(nfs4_schedule_stateid_recovery);
@@ -1205,6 +1365,27 @@ void nfs_inode_find_state_and_recover(struct inode *inode,
nfs4_schedule_state_manager(clp);
}
+static void nfs4_state_mark_open_context_bad(struct nfs4_state *state)
+{
+ struct inode *inode = state->inode;
+ struct nfs_inode *nfsi = NFS_I(inode);
+ struct nfs_open_context *ctx;
+
+ spin_lock(&inode->i_lock);
+ list_for_each_entry(ctx, &nfsi->open_files, list) {
+ if (ctx->state != state)
+ continue;
+ set_bit(NFS_CONTEXT_BAD, &ctx->flags);
+ }
+ spin_unlock(&inode->i_lock);
+}
+
+static void nfs4_state_mark_recovery_failed(struct nfs4_state *state, int error)
+{
+ set_bit(NFS_STATE_RECOVERY_FAILED, &state->flags);
+ nfs4_state_mark_open_context_bad(state);
+}
+
static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_recovery_ops *ops)
{
@@ -1219,13 +1400,13 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_
/* Guard against delegation returns and new lock/unlock calls */
down_write(&nfsi->rwsem);
/* Protect inode->i_flock using the BKL */
- lock_flocks();
+ spin_lock(&inode->i_lock);
for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) {
if (!(fl->fl_flags & (FL_POSIX|FL_FLOCK)))
continue;
if (nfs_file_open_context(fl->fl_file)->state != state)
continue;
- unlock_flocks();
+ spin_unlock(&inode->i_lock);
status = ops->recover_lock(state, fl);
switch (status) {
case 0:
@@ -1243,8 +1424,8 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
goto out;
default:
- printk(KERN_ERR "NFS: %s: unhandled error %d. "
- "Zeroing state\n", __func__, status);
+ printk(KERN_ERR "NFS: %s: unhandled error %d\n",
+ __func__, status);
case -ENOMEM:
case -NFS4ERR_DENIED:
case -NFS4ERR_RECLAIM_BAD:
@@ -1252,9 +1433,9 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_
/* kill_proc(fl->fl_pid, SIGLOST, 1); */
status = 0;
}
- lock_flocks();
+ spin_lock(&inode->i_lock);
}
- unlock_flocks();
+ spin_unlock(&inode->i_lock);
out:
up_write(&nfsi->rwsem);
return status;
@@ -1274,11 +1455,14 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
* recovering after a network partition or a reboot from a
* server that doesn't support a grace period.
*/
-restart:
spin_lock(&sp->so_lock);
+ raw_write_seqcount_begin(&sp->so_reclaim_seqcount);
+restart:
list_for_each_entry(state, &sp->so_states, open_states) {
if (!test_and_clear_bit(ops->state_flag_bit, &state->flags))
continue;
+ if (!nfs4_valid_open_stateid(state))
+ continue;
if (state->state == 0)
continue;
atomic_inc(&state->count);
@@ -1287,42 +1471,33 @@ restart:
if (status >= 0) {
status = nfs4_reclaim_locks(state, ops);
if (status >= 0) {
- spin_lock(&state->state_lock);
- list_for_each_entry(lock, &state->lock_states, ls_locks) {
- if (!(lock->ls_flags & NFS_LOCK_INITIALIZED))
- pr_warn_ratelimited("NFS: "
- "%s: Lock reclaim "
- "failed!\n", __func__);
+ if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) {
+ spin_lock(&state->state_lock);
+ list_for_each_entry(lock, &state->lock_states, ls_locks) {
+ if (!test_bit(NFS_LOCK_INITIALIZED, &lock->ls_flags))
+ pr_warn_ratelimited("NFS: "
+ "%s: Lock reclaim "
+ "failed!\n", __func__);
+ }
+ spin_unlock(&state->state_lock);
}
- spin_unlock(&state->state_lock);
nfs4_put_open_state(state);
+ spin_lock(&sp->so_lock);
goto restart;
}
}
switch (status) {
default:
- printk(KERN_ERR "NFS: %s: unhandled error %d. "
- "Zeroing state\n", __func__, status);
+ printk(KERN_ERR "NFS: %s: unhandled error %d\n",
+ __func__, status);
case -ENOENT:
case -ENOMEM:
case -ESTALE:
- /*
- * Open state on this file cannot be recovered
- * All we can do is revert to using the zero stateid.
- */
- memset(&state->stateid, 0,
- sizeof(state->stateid));
- /* Mark the file as being 'closed' */
- state->state = 0;
- break;
- case -EKEYEXPIRED:
- /*
- * User RPCSEC_GSS context has expired.
- * We cannot recover this stateid now, so
- * skip it and allow recovery thread to
- * proceed.
- */
+ /* Open state on this file cannot be recovered */
+ nfs4_state_mark_recovery_failed(state, status);
break;
+ case -EAGAIN:
+ ssleep(1);
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_BAD_STATEID:
@@ -1341,12 +1516,17 @@ restart:
goto out_err;
}
nfs4_put_open_state(state);
+ spin_lock(&sp->so_lock);
goto restart;
}
+ raw_write_seqcount_end(&sp->so_reclaim_seqcount);
spin_unlock(&sp->so_lock);
return 0;
out_err:
nfs4_put_open_state(state);
+ spin_lock(&sp->so_lock);
+ raw_write_seqcount_end(&sp->so_reclaim_seqcount);
+ spin_unlock(&sp->so_lock);
return status;
}
@@ -1361,7 +1541,7 @@ static void nfs4_clear_open_state(struct nfs4_state *state)
spin_lock(&state->state_lock);
list_for_each_entry(lock, &state->lock_states, ls_locks) {
lock->ls_seqid.flags = 0;
- lock->ls_flags &= ~NFS_LOCK_INITIALIZED;
+ clear_bit(NFS_LOCK_INITIALIZED, &lock->ls_flags);
}
spin_unlock(&state->state_lock);
}
@@ -1409,11 +1589,12 @@ static void nfs4_state_start_reclaim_reboot(struct nfs_client *clp)
}
static void nfs4_reclaim_complete(struct nfs_client *clp,
- const struct nfs4_state_recovery_ops *ops)
+ const struct nfs4_state_recovery_ops *ops,
+ struct rpc_cred *cred)
{
/* Notify the server we're done reclaiming our state */
if (ops->reclaim_complete)
- (void)ops->reclaim_complete(clp);
+ (void)ops->reclaim_complete(clp, cred);
}
static void nfs4_clear_reclaim_server(struct nfs_server *server)
@@ -1458,9 +1639,15 @@ static int nfs4_state_clear_reclaim_reboot(struct nfs_client *clp)
static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
{
+ const struct nfs4_state_recovery_ops *ops;
+ struct rpc_cred *cred;
+
if (!nfs4_state_clear_reclaim_reboot(clp))
return;
- nfs4_reclaim_complete(clp, clp->cl_mvops->reboot_recovery_ops);
+ ops = clp->cl_mvops->reboot_recovery_ops;
+ cred = nfs4_get_clid_cred(clp);
+ nfs4_reclaim_complete(clp, ops, cred);
+ put_rpccred(cred);
}
static void nfs_delegation_clear_all(struct nfs_client *clp)
@@ -1475,14 +1662,6 @@ static void nfs4_state_start_reclaim_nograce(struct nfs_client *clp)
nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce);
}
-static void nfs4_warn_keyexpired(const char *s)
-{
- printk_ratelimited(KERN_WARNING "Error: state manager"
- " encountered RPCSEC_GSS session"
- " expired against NFSv4 server %s.\n",
- s);
-}
-
static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
{
switch (error) {
@@ -1495,7 +1674,6 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
nfs4_state_end_reclaim_reboot(clp);
break;
case -NFS4ERR_STALE_CLIENTID:
- case -NFS4ERR_LEASE_MOVED:
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
nfs4_state_clear_reclaim_reboot(clp);
nfs4_state_start_reclaim_reboot(clp);
@@ -1516,10 +1694,6 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
set_bit(NFS4CLNT_BIND_CONN_TO_SESSION, &clp->cl_state);
break;
- case -EKEYEXPIRED:
- /* Nothing we can do */
- nfs4_warn_keyexpired(clp->cl_hostname);
- break;
default:
dprintk("%s: failed to handle error %d for server %s\n",
__func__, error, clp->cl_hostname);
@@ -1584,19 +1758,23 @@ static int nfs4_check_lease(struct nfs_client *clp)
cred = ops->get_state_renewal_cred_locked(clp);
spin_unlock(&clp->cl_lock);
if (cred == NULL) {
- cred = nfs4_get_setclientid_cred(clp);
+ cred = nfs4_get_clid_cred(clp);
status = -ENOKEY;
if (cred == NULL)
goto out;
}
status = ops->renew_lease(clp, cred);
put_rpccred(cred);
+ if (status == -ETIMEDOUT) {
+ set_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state);
+ return 0;
+ }
out:
return nfs4_recovery_handle_error(clp, status);
}
-/* Set NFS4CLNT_LEASE_EXPIRED for all v4.0 errors and for recoverable errors
- * on EXCHANGE_ID for v4.1
+/* Set NFS4CLNT_LEASE_EXPIRED and reclaim reboot state for all v4.0 errors
+ * and for recoverable errors on EXCHANGE_ID for v4.1
*/
static int nfs4_handle_reclaim_lease_error(struct nfs_client *clp, int status)
{
@@ -1606,8 +1784,12 @@ static int nfs4_handle_reclaim_lease_error(struct nfs_client *clp, int status)
return -ESERVERFAULT;
/* Lease confirmation error: retry after purging the lease */
ssleep(1);
+ clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
+ break;
case -NFS4ERR_STALE_CLIENTID:
clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
+ nfs4_state_clear_reclaim_reboot(clp);
+ nfs4_state_start_reclaim_reboot(clp);
break;
case -NFS4ERR_CLID_INUSE:
pr_err("NFS: Server %s reports our clientid is in use\n",
@@ -1616,10 +1798,6 @@ static int nfs4_handle_reclaim_lease_error(struct nfs_client *clp, int status)
clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
return -EPERM;
case -EACCES:
- if (clp->cl_machine_cred == NULL)
- return -EACCES;
- /* Handle case where the user hasn't set up machine creds */
- nfs4_clear_machine_cred(clp);
case -NFS4ERR_DELAY:
case -ETIMEDOUT:
case -EAGAIN:
@@ -1632,8 +1810,6 @@ static int nfs4_handle_reclaim_lease_error(struct nfs_client *clp, int status)
dprintk("%s: exit with error %d for server %s\n",
__func__, -EPROTONOSUPPORT, clp->cl_hostname);
return -EPROTONOSUPPORT;
- case -EKEYEXPIRED:
- nfs4_warn_keyexpired(clp->cl_hostname);
case -NFS4ERR_NOT_SAME: /* FixMe: implement recovery
* in nfs4_exchange_id */
default:
@@ -1654,7 +1830,7 @@ static int nfs4_establish_lease(struct nfs_client *clp)
clp->cl_mvops->reboot_recovery_ops;
int status;
- cred = ops->get_clid_cred(clp);
+ cred = nfs4_get_clid_cred(clp);
if (cred == NULL)
return -ENOENT;
status = ops->establish_clid(clp, cred);
@@ -1698,6 +1874,266 @@ static int nfs4_purge_lease(struct nfs_client *clp)
return 0;
}
+/*
+ * Try remote migration of one FSID from a source server to a
+ * destination server. The source server provides a list of
+ * potential destinations.
+ *
+ * Returns zero or a negative NFS4ERR status code.
+ */
+static int nfs4_try_migration(struct nfs_server *server, struct rpc_cred *cred)
+{
+ struct nfs_client *clp = server->nfs_client;
+ struct nfs4_fs_locations *locations = NULL;
+ struct inode *inode;
+ struct page *page;
+ int status, result;
+
+ dprintk("--> %s: FSID %llx:%llx on \"%s\"\n", __func__,
+ (unsigned long long)server->fsid.major,
+ (unsigned long long)server->fsid.minor,
+ clp->cl_hostname);
+
+ result = 0;
+ page = alloc_page(GFP_KERNEL);
+ locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
+ if (page == NULL || locations == NULL) {
+ dprintk("<-- %s: no memory\n", __func__);
+ goto out;
+ }
+
+ inode = server->super->s_root->d_inode;
+ result = nfs4_proc_get_locations(inode, locations, page, cred);
+ if (result) {
+ dprintk("<-- %s: failed to retrieve fs_locations: %d\n",
+ __func__, result);
+ goto out;
+ }
+
+ result = -NFS4ERR_NXIO;
+ if (!(locations->fattr.valid & NFS_ATTR_FATTR_V4_LOCATIONS)) {
+ dprintk("<-- %s: No fs_locations data, migration skipped\n",
+ __func__);
+ goto out;
+ }
+
+ nfs4_begin_drain_session(clp);
+
+ status = nfs4_replace_transport(server, locations);
+ if (status != 0) {
+ dprintk("<-- %s: failed to replace transport: %d\n",
+ __func__, status);
+ goto out;
+ }
+
+ result = 0;
+ dprintk("<-- %s: migration succeeded\n", __func__);
+
+out:
+ if (page != NULL)
+ __free_page(page);
+ kfree(locations);
+ if (result) {
+ pr_err("NFS: migration recovery failed (server %s)\n",
+ clp->cl_hostname);
+ set_bit(NFS_MIG_FAILED, &server->mig_status);
+ }
+ return result;
+}
+
+/*
+ * Returns zero or a negative NFS4ERR status code.
+ */
+static int nfs4_handle_migration(struct nfs_client *clp)
+{
+ const struct nfs4_state_maintenance_ops *ops =
+ clp->cl_mvops->state_renewal_ops;
+ struct nfs_server *server;
+ struct rpc_cred *cred;
+
+ dprintk("%s: migration reported on \"%s\"\n", __func__,
+ clp->cl_hostname);
+
+ spin_lock(&clp->cl_lock);
+ cred = ops->get_state_renewal_cred_locked(clp);
+ spin_unlock(&clp->cl_lock);
+ if (cred == NULL)
+ return -NFS4ERR_NOENT;
+
+ clp->cl_mig_gen++;
+restart:
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ int status;
+
+ if (server->mig_gen == clp->cl_mig_gen)
+ continue;
+ server->mig_gen = clp->cl_mig_gen;
+
+ if (!test_and_clear_bit(NFS_MIG_IN_TRANSITION,
+ &server->mig_status))
+ continue;
+
+ rcu_read_unlock();
+ status = nfs4_try_migration(server, cred);
+ if (status < 0) {
+ put_rpccred(cred);
+ return status;
+ }
+ goto restart;
+ }
+ rcu_read_unlock();
+ put_rpccred(cred);
+ return 0;
+}
+
+/*
+ * Test each nfs_server on the clp's cl_superblocks list to see
+ * if it's moved to another server. Stop when the server no longer
+ * returns NFS4ERR_LEASE_MOVED.
+ */
+static int nfs4_handle_lease_moved(struct nfs_client *clp)
+{
+ const struct nfs4_state_maintenance_ops *ops =
+ clp->cl_mvops->state_renewal_ops;
+ struct nfs_server *server;
+ struct rpc_cred *cred;
+
+ dprintk("%s: lease moved reported on \"%s\"\n", __func__,
+ clp->cl_hostname);
+
+ spin_lock(&clp->cl_lock);
+ cred = ops->get_state_renewal_cred_locked(clp);
+ spin_unlock(&clp->cl_lock);
+ if (cred == NULL)
+ return -NFS4ERR_NOENT;
+
+ clp->cl_mig_gen++;
+restart:
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ struct inode *inode;
+ int status;
+
+ if (server->mig_gen == clp->cl_mig_gen)
+ continue;
+ server->mig_gen = clp->cl_mig_gen;
+
+ rcu_read_unlock();
+
+ inode = server->super->s_root->d_inode;
+ status = nfs4_proc_fsid_present(inode, cred);
+ if (status != -NFS4ERR_MOVED)
+ goto restart; /* wasn't this one */
+ if (nfs4_try_migration(server, cred) == -NFS4ERR_LEASE_MOVED)
+ goto restart; /* there are more */
+ goto out;
+ }
+ rcu_read_unlock();
+
+out:
+ put_rpccred(cred);
+ return 0;
+}
+
+/**
+ * nfs4_discover_server_trunking - Detect server IP address trunking
+ *
+ * @clp: nfs_client under test
+ * @result: OUT: found nfs_client, or clp
+ *
+ * Returns zero or a negative errno. If zero is returned,
+ * an nfs_client pointer is planted in "result".
+ *
+ * Note: since we are invoked in process context, and
+ * not from inside the state manager, we cannot use
+ * nfs4_handle_reclaim_lease_error().
+ */
+int nfs4_discover_server_trunking(struct nfs_client *clp,
+ struct nfs_client **result)
+{
+ const struct nfs4_state_recovery_ops *ops =
+ clp->cl_mvops->reboot_recovery_ops;
+ struct rpc_clnt *clnt;
+ struct rpc_cred *cred;
+ int i, status;
+
+ dprintk("NFS: %s: testing '%s'\n", __func__, clp->cl_hostname);
+
+ clnt = clp->cl_rpcclient;
+ i = 0;
+
+ mutex_lock(&nfs_clid_init_mutex);
+again:
+ status = -ENOENT;
+ cred = nfs4_get_clid_cred(clp);
+ if (cred == NULL)
+ goto out_unlock;
+
+ status = ops->detect_trunking(clp, result, cred);
+ put_rpccred(cred);
+ switch (status) {
+ case 0:
+ break;
+ case -ETIMEDOUT:
+ if (clnt->cl_softrtry)
+ break;
+ case -NFS4ERR_DELAY:
+ case -EAGAIN:
+ ssleep(1);
+ case -NFS4ERR_STALE_CLIENTID:
+ dprintk("NFS: %s after status %d, retrying\n",
+ __func__, status);
+ goto again;
+ case -EACCES:
+ if (i++ == 0) {
+ nfs4_root_machine_cred(clp);
+ goto again;
+ }
+ if (clnt->cl_auth->au_flavor == RPC_AUTH_UNIX)
+ break;
+ case -NFS4ERR_CLID_INUSE:
+ case -NFS4ERR_WRONGSEC:
+ /* No point in retrying if we already used RPC_AUTH_UNIX */
+ if (clnt->cl_auth->au_flavor == RPC_AUTH_UNIX) {
+ status = -EPERM;
+ break;
+ }
+ clnt = rpc_clone_client_set_auth(clnt, RPC_AUTH_UNIX);
+ if (IS_ERR(clnt)) {
+ status = PTR_ERR(clnt);
+ break;
+ }
+ /* 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:
+ status = -EPROTONOSUPPORT;
+ break;
+
+ case -EKEYEXPIRED:
+ case -NFS4ERR_NOT_SAME: /* FixMe: implement recovery
+ * in nfs4_exchange_id */
+ status = -EKEYEXPIRED;
+ break;
+ default:
+ pr_warn("NFS: %s unhandled error %d. Exiting with error EIO\n",
+ __func__, status);
+ status = -EIO;
+ }
+
+out_unlock:
+ mutex_unlock(&nfs_clid_init_mutex);
+ dprintk("NFS: %s: status = %d\n", __func__, status);
+ return status;
+}
+
#ifdef CONFIG_NFS_V4_1
void nfs4_schedule_session_recovery(struct nfs4_session *session, int err)
{
@@ -1714,14 +2150,23 @@ void nfs4_schedule_session_recovery(struct nfs4_session *session, int err)
}
EXPORT_SYMBOL_GPL(nfs4_schedule_session_recovery);
-void nfs41_handle_recall_slot(struct nfs_client *clp)
+static void nfs41_ping_server(struct nfs_client *clp)
{
- set_bit(NFS4CLNT_RECALL_SLOT, &clp->cl_state);
- dprintk("%s: scheduling slot recall for server %s\n", __func__,
- clp->cl_hostname);
+ /* Use CHECK_LEASE to ping the server with a SEQUENCE */
+ set_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state);
nfs4_schedule_state_manager(clp);
}
+void nfs41_server_notify_target_slotid_update(struct nfs_client *clp)
+{
+ nfs41_ping_server(clp);
+}
+
+void nfs41_server_notify_highest_slotid_update(struct nfs_client *clp)
+{
+ nfs41_ping_server(clp);
+}
+
static void nfs4_reset_all_state(struct nfs_client *clp)
{
if (test_and_set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) == 0) {
@@ -1786,9 +2231,10 @@ void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags)
nfs41_handle_server_reboot(clp);
if (flags & (SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED |
SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED |
- SEQ4_STATUS_ADMIN_STATE_REVOKED |
- SEQ4_STATUS_LEASE_MOVED))
+ SEQ4_STATUS_ADMIN_STATE_REVOKED))
nfs41_handle_state_revoked(clp);
+ if (flags & SEQ4_STATUS_LEASE_MOVED)
+ nfs4_schedule_lease_moved_recovery(clp);
if (flags & SEQ4_STATUS_RECALLABLE_STATE_REVOKED)
nfs41_handle_recallable_state_revoked(clp);
if (flags & SEQ4_STATUS_BACKCHANNEL_FAULT)
@@ -1806,10 +2252,20 @@ static int nfs4_reset_session(struct nfs_client *clp)
if (!nfs4_has_session(clp))
return 0;
nfs4_begin_drain_session(clp);
- cred = nfs4_get_exchange_id_cred(clp);
+ cred = nfs4_get_clid_cred(clp);
status = nfs4_proc_destroy_session(clp->cl_session, cred);
- if (status && status != -NFS4ERR_BADSESSION &&
- status != -NFS4ERR_DEADSESSION) {
+ switch (status) {
+ case 0:
+ case -NFS4ERR_BADSESSION:
+ case -NFS4ERR_DEADSESSION:
+ break;
+ case -NFS4ERR_BACK_CHAN_BUSY:
+ case -NFS4ERR_DELAY:
+ set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
+ status = 0;
+ ssleep(1);
+ goto out;
+ default:
status = nfs4_recovery_handle_error(clp, status);
goto out;
}
@@ -1831,35 +2287,6 @@ out:
return status;
}
-static int nfs4_recall_slot(struct nfs_client *clp)
-{
- struct nfs4_slot_table *fc_tbl;
- struct nfs4_slot *new, *old;
- int i;
-
- if (!nfs4_has_session(clp))
- return 0;
- nfs4_begin_drain_session(clp);
- fc_tbl = &clp->cl_session->fc_slot_table;
- new = kmalloc(fc_tbl->target_max_slots * sizeof(struct nfs4_slot),
- GFP_NOFS);
- if (!new)
- return -ENOMEM;
-
- spin_lock(&fc_tbl->slot_tbl_lock);
- for (i = 0; i < fc_tbl->target_max_slots; i++)
- new[i].seq_nr = fc_tbl->slots[i].seq_nr;
- old = fc_tbl->slots;
- fc_tbl->slots = new;
- fc_tbl->max_slots = fc_tbl->target_max_slots;
- fc_tbl->target_max_slots = 0;
- clp->cl_session->fc_attrs.max_reqs = fc_tbl->max_slots;
- spin_unlock(&fc_tbl->slot_tbl_lock);
-
- kfree(old);
- return 0;
-}
-
static int nfs4_bind_conn_to_session(struct nfs_client *clp)
{
struct rpc_cred *cred;
@@ -1868,7 +2295,7 @@ static int nfs4_bind_conn_to_session(struct nfs_client *clp)
if (!nfs4_has_session(clp))
return 0;
nfs4_begin_drain_session(clp);
- cred = nfs4_get_exchange_id_cred(clp);
+ cred = nfs4_get_clid_cred(clp);
ret = nfs4_proc_bind_conn_to_session(clp, cred);
if (cred)
put_rpccred(cred);
@@ -1889,8 +2316,6 @@ static int nfs4_bind_conn_to_session(struct nfs_client *clp)
}
#else /* CONFIG_NFS_V4_1 */
static int nfs4_reset_session(struct nfs_client *clp) { return 0; }
-static int nfs4_end_drain_session(struct nfs_client *clp) { return 0; }
-static int nfs4_recall_slot(struct nfs_client *clp) { return 0; }
static int nfs4_bind_conn_to_session(struct nfs_client *clp)
{
@@ -1922,15 +2347,6 @@ static void nfs4_state_manager(struct nfs_client *clp)
continue;
}
- if (test_and_clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state)) {
- section = "check lease";
- status = nfs4_check_lease(clp);
- if (status < 0)
- goto out_error;
- if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
- continue;
- }
-
/* Initialize or reset the session */
if (test_and_clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) {
section = "reset session";
@@ -1951,13 +2367,25 @@ static void nfs4_state_manager(struct nfs_client *clp)
continue;
}
- /* Recall session slots */
- if (test_and_clear_bit(NFS4CLNT_RECALL_SLOT, &clp->cl_state)) {
- section = "recall slot";
- status = nfs4_recall_slot(clp);
+ if (test_and_clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state)) {
+ section = "check lease";
+ status = nfs4_check_lease(clp);
+ if (status < 0)
+ goto out_error;
+ }
+
+ if (test_and_clear_bit(NFS4CLNT_MOVED, &clp->cl_state)) {
+ section = "migration";
+ status = nfs4_handle_migration(clp);
+ if (status < 0)
+ goto out_error;
+ }
+
+ if (test_and_clear_bit(NFS4CLNT_LEASE_MOVED, &clp->cl_state)) {
+ section = "lease moved";
+ status = nfs4_handle_lease_moved(clp);
if (status < 0)
goto out_error;
- continue;
}
/* First recover reboot state... */
@@ -2008,6 +2436,7 @@ out_error:
pr_warn_ratelimited("NFS: state manager%s%s failed on NFSv4 server %s"
" with error %d\n", section_sep, section,
clp->cl_hostname, -status);
+ ssleep(1);
nfs4_end_drain_session(clp);
nfs4_clear_state_manager_bit(clp);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 15:18:22 +0000