nfs4_recover_state(clp);
}
+static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state)
+{
+
+ set_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags);
+ /* Don't recover state that expired before the reboot */
+ if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) {
+ clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags);
+ return 0;
+ }
+ set_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state);
+ return 1;
+}
+
+static 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);
+ set_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);
+ return 1;
+}
+
static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_recovery_ops *ops)
{
struct inode *inode = state->inode;
* server that doesn't support a grace period.
*/
list_for_each_entry(state, &sp->so_states, open_states) {
+ if (!test_and_clear_bit(ops->state_flag_bit, &state->flags))
+ continue;
if (state->state == 0)
continue;
status = ops->recover_open(sp, state);
printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n",
__func__, status);
case -ENOENT:
- case -NFS4ERR_RECLAIM_BAD:
- case -NFS4ERR_RECLAIM_CONFLICT:
+ case -ESTALE:
/*
* Open state on this file cannot be recovered
* All we can do is revert to using the zero stateid.
/* Mark the file as being 'closed' */
state->state = 0;
break;
+ case -NFS4ERR_RECLAIM_BAD:
+ case -NFS4ERR_RECLAIM_CONFLICT:
+ nfs4_state_mark_reclaim_nograce(sp->so_client, state);
+ break;
case -NFS4ERR_EXPIRED:
case -NFS4ERR_NO_GRACE:
+ nfs4_state_mark_reclaim_nograce(sp->so_client, state);
case -NFS4ERR_STALE_CLIENTID:
goto out_err;
}
return status;
}
-static void nfs4_state_mark_reclaim(struct nfs_client *clp)
+static void nfs4_clear_open_state(struct nfs4_state *state)
+{
+ struct nfs4_lock_state *lock;
+
+ clear_bit(NFS_DELEGATED_STATE, &state->flags);
+ clear_bit(NFS_O_RDONLY_STATE, &state->flags);
+ clear_bit(NFS_O_WRONLY_STATE, &state->flags);
+ clear_bit(NFS_O_RDWR_STATE, &state->flags);
+ list_for_each_entry(lock, &state->lock_states, ls_locks) {
+ lock->ls_seqid.counter = 0;
+ lock->ls_seqid.flags = 0;
+ lock->ls_flags &= ~NFS_LOCK_INITIALIZED;
+ }
+}
+
+static void nfs4_state_mark_reclaim_helper(struct nfs_client *clp, int (*mark_reclaim)(struct nfs_client *clp, struct nfs4_state *state))
{
struct nfs4_state_owner *sp;
struct rb_node *pos;
struct nfs4_state *state;
- struct nfs4_lock_state *lock;
/* Reset all sequence ids to zero */
for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
sp->so_seqid.flags = 0;
spin_lock(&sp->so_lock);
list_for_each_entry(state, &sp->so_states, open_states) {
- clear_bit(NFS_DELEGATED_STATE, &state->flags);
- clear_bit(NFS_O_RDONLY_STATE, &state->flags);
- clear_bit(NFS_O_WRONLY_STATE, &state->flags);
- clear_bit(NFS_O_RDWR_STATE, &state->flags);
- list_for_each_entry(lock, &state->lock_states, ls_locks) {
- lock->ls_seqid.counter = 0;
- lock->ls_seqid.flags = 0;
- lock->ls_flags &= ~NFS_LOCK_INITIALIZED;
- }
+ if (mark_reclaim(clp, state))
+ nfs4_clear_open_state(state);
}
spin_unlock(&sp->so_lock);
}
}
+static void nfs4_state_start_reclaim_reboot(struct nfs_client *clp)
+{
+ /* Mark all delegations for reclaim */
+ nfs_delegation_mark_reclaim(clp);
+ nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_reboot);
+}
+
+static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
+{
+ struct nfs4_state_owner *sp;
+ struct rb_node *pos;
+ struct nfs4_state *state;
+
+ if (!test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
+ return;
+
+ for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
+ sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
+ spin_lock(&sp->so_lock);
+ list_for_each_entry(state, &sp->so_states, open_states) {
+ if (!test_and_clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags))
+ continue;
+ nfs4_state_mark_reclaim_nograce(clp, state);
+ }
+ spin_unlock(&sp->so_lock);
+ }
+
+ nfs_delegation_reap_unclaimed(clp);
+}
+
+static void nfs_delegation_clear_all(struct nfs_client *clp)
+{
+ nfs_delegation_mark_reclaim(clp);
+ nfs_delegation_reap_unclaimed(clp);
+}
+
+static void nfs4_state_start_reclaim_nograce(struct nfs_client *clp)
+{
+ nfs_delegation_clear_all(clp);
+ nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce);
+}
+
+static void nfs4_state_end_reclaim_nograce(struct nfs_client *clp)
+{
+ clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);
+}
+
static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recovery_ops *ops)
{
struct rb_node *pos;
/* Yes there are: try to renew the old lease */
status = nfs4_proc_renew(clp, cred);
put_rpccred(cred);
+ switch (status) {
+ case -NFS4ERR_CB_PATH_DOWN:
+ set_bit(NFS4CLNT_CB_PATH_DOWN, &clp->cl_state);
+ break;
+ case -NFS4ERR_STALE_CLIENTID:
+ case -NFS4ERR_LEASE_MOVED:
+ set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
+ nfs4_state_start_reclaim_reboot(clp);
+ break;
+ case -NFS4ERR_EXPIRED:
+ set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
+ nfs4_state_start_reclaim_nograce(clp);
+ }
return status;
}
/* "reboot" to ensure we clear all state on the server */
clp->cl_boot_time = CURRENT_TIME;
+ set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
return status;
}
static int reclaimer(void *ptr)
{
struct nfs_client *clp = ptr;
- const struct nfs4_state_recovery_ops *ops;
int status = 0;
allow_signal(SIGKILL);
/* Ensure exclusive access to NFSv4 state */
down_write(&clp->cl_sem);
while (!list_empty(&clp->cl_superblocks)) {
- ops = &nfs4_network_partition_recovery_ops;
status = nfs4_check_lease(clp);
- switch (status) {
- case 0:
- case -NFS4ERR_CB_PATH_DOWN:
- goto out;
- case -NFS4ERR_STALE_CLIENTID:
- case -NFS4ERR_LEASE_MOVED:
- ops = &nfs4_reboot_recovery_ops;
- }
- /* We're going to have to re-establish a clientid */
- nfs4_state_mark_reclaim(clp);
+ if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) {
+ /* We're going to have to re-establish a clientid */
+ status = nfs4_reclaim_lease(clp);
+ if (status) {
+ set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
+ if (status == -EAGAIN)
+ continue;
+ goto out_error;
+ }
+ }
- status = nfs4_reclaim_lease(clp);
- if (status) {
- if (status == -EAGAIN)
+ /* First recover reboot state... */
+ if (test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) {
+ /* Note: list is protected by exclusive lock on cl->cl_sem */
+ status = nfs4_do_reclaim(clp, &nfs4_reboot_recovery_ops);
+ if (status == -NFS4ERR_STALE_CLIENTID) {
+ set_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state);
continue;
- goto out_error;
+ }
+ nfs4_state_end_reclaim_reboot(clp);
+ continue;
}
- /* Mark all delegations for reclaim */
- nfs_delegation_mark_reclaim(clp);
- /* Note: list is protected by exclusive lock on cl->cl_sem */
- status = nfs4_do_reclaim(clp, ops);
- if (status < 0) {
- if (status == -NFS4ERR_NO_GRACE) {
- ops = &nfs4_network_partition_recovery_ops;
- status = nfs4_do_reclaim(clp, ops);
- }
- if (status == -NFS4ERR_STALE_CLIENTID)
- continue;
- if (status == -NFS4ERR_EXPIRED)
- continue;
+ /* Now recover expired state... */
+ if (test_and_clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state)) {
+ /* Note: list is protected by exclusive lock on cl->cl_sem */
+ status = nfs4_do_reclaim(clp, &nfs4_nograce_recovery_ops);
+ if (status < 0) {
+ set_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);
+ if (status == -NFS4ERR_STALE_CLIENTID)
+ continue;
+ if (status == -NFS4ERR_EXPIRED)
+ continue;
+ goto out_error;
+ } else
+ nfs4_state_end_reclaim_nograce(clp);
+ continue;
}
- nfs_delegation_reap_unclaimed(clp);
break;
}
out:
up_write(&clp->cl_sem);
- if (status == -NFS4ERR_CB_PATH_DOWN)
+ if (test_and_clear_bit(NFS4CLNT_CB_PATH_DOWN, &clp->cl_state))
nfs_handle_cb_pathdown(clp);
nfs4_clear_recover_bit(clp);
nfs_put_client(clp);
out_error:
printk(KERN_WARNING "Error: state recovery failed on NFSv4 server %s"
" with error %d\n", clp->cl_hostname, -status);
- set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
+ if (test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
+ nfs4_state_end_reclaim_reboot(clp);
goto out;
}
projects / linux-2.6-omap-h63xx.git / blobdiff