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-rw-r--r--fs/nfs/nfs4_fs.h42
-rw-r--r--fs/nfs/nfs4proc.c111
-rw-r--r--fs/nfs/nfs4state.c145
-rw-r--r--fs/nfs/nfs4xdr.c43
-rw-r--r--include/linux/nfs_xdr.h15
5 files changed, 273 insertions, 83 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index ec1a22d7b876..6ac6708484f5 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -93,6 +93,35 @@ struct nfs4_client {
};
/*
+ * struct rpc_sequence ensures that RPC calls are sent in the exact
+ * order that they appear on the list.
+ */
+struct rpc_sequence {
+ struct rpc_wait_queue wait; /* RPC call delay queue */
+ spinlock_t lock; /* Protects the list */
+ struct list_head list; /* Defines sequence of RPC calls */
+};
+
+#define NFS_SEQID_CONFIRMED 1
+struct nfs_seqid_counter {
+ struct rpc_sequence *sequence;
+ int flags;
+ u32 counter;
+};
+
+struct nfs_seqid {
+ struct list_head list;
+ struct nfs_seqid_counter *sequence;
+ struct rpc_task *task;
+};
+
+static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status)
+{
+ if (seqid_mutating_err(-status))
+ seqid->flags |= NFS_SEQID_CONFIRMED;
+}
+
+/*
* NFS4 state_owners and lock_owners are simply labels for ordered
* sequences of RPC calls. Their sole purpose is to provide once-only
* semantics by allowing the server to identify replayed requests.
@@ -106,12 +135,13 @@ struct nfs4_state_owner {
struct nfs4_client *so_client;
u32 so_id; /* 32-bit identifier, unique */
struct semaphore so_sema;
- u32 so_seqid; /* protected by so_sema */
atomic_t so_count;
struct rpc_cred *so_cred; /* Associated cred */
struct list_head so_states;
struct list_head so_delegations;
+ struct nfs_seqid_counter so_seqid;
+ struct rpc_sequence so_sequence;
};
/*
@@ -132,7 +162,7 @@ struct nfs4_lock_state {
fl_owner_t ls_owner; /* POSIX lock owner */
#define NFS_LOCK_INITIALIZED 1
int ls_flags;
- u32 ls_seqid;
+ struct nfs_seqid_counter ls_seqid;
u32 ls_id;
nfs4_stateid ls_stateid;
atomic_t ls_count;
@@ -224,12 +254,16 @@ extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state
extern void nfs4_put_open_state(struct nfs4_state *);
extern void nfs4_close_state(struct nfs4_state *, mode_t);
extern struct nfs4_state *nfs4_find_state(struct inode *, struct rpc_cred *, mode_t mode);
-extern void nfs4_increment_seqid(int status, struct nfs4_state_owner *sp);
extern void nfs4_schedule_state_recovery(struct nfs4_client *);
extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
-extern void nfs4_increment_lock_seqid(int status, struct nfs4_lock_state *ls);
extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t);
+extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter);
+extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task);
+extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid);
+extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid);
+extern void nfs_free_seqid(struct nfs_seqid *seqid);
+
extern const nfs4_stateid zero_stateid;
/* nfs4xdr.c */
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 9701ca8c9428..9ba89e7cdd28 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -218,7 +218,6 @@ static int _nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *st
struct nfs_delegation *delegation = NFS_I(inode)->delegation;
struct nfs_openargs o_arg = {
.fh = NFS_FH(inode),
- .seqid = sp->so_seqid,
.id = sp->so_id,
.open_flags = state->state,
.clientid = server->nfs4_state->cl_clientid,
@@ -245,8 +244,13 @@ static int _nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *st
}
o_arg.u.delegation_type = delegation->type;
}
+ o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
+ if (o_arg.seqid == NULL)
+ return -ENOMEM;
status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
- nfs4_increment_seqid(status, sp);
+ /* Confirm the sequence as being established */
+ nfs_confirm_seqid(&sp->so_seqid, status);
+ nfs_increment_open_seqid(status, o_arg.seqid);
if (status == 0) {
memcpy(&state->stateid, &o_res.stateid, sizeof(state->stateid));
if (o_res.delegation_type != 0) {
@@ -256,6 +260,7 @@ static int _nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *st
nfs_async_inode_return_delegation(inode, &o_res.stateid);
}
}
+ nfs_free_seqid(o_arg.seqid);
clear_bit(NFS_DELEGATED_STATE, &state->flags);
/* Ensure we update the inode attributes */
NFS_CACHEINV(inode);
@@ -307,16 +312,20 @@ static int _nfs4_open_delegation_recall(struct dentry *dentry, struct nfs4_state
goto out;
if (state->state == 0)
goto out;
- arg.seqid = sp->so_seqid;
+ arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
+ status = -ENOMEM;
+ if (arg.seqid == NULL)
+ goto out;
arg.open_flags = state->state;
memcpy(arg.u.delegation.data, state->stateid.data, sizeof(arg.u.delegation.data));
status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
- nfs4_increment_seqid(status, sp);
+ nfs_increment_open_seqid(status, arg.seqid);
if (status >= 0) {
memcpy(state->stateid.data, res.stateid.data,
sizeof(state->stateid.data));
clear_bit(NFS_DELEGATED_STATE, &state->flags);
}
+ nfs_free_seqid(arg.seqid);
out:
up(&sp->so_sema);
dput(parent);
@@ -345,11 +354,11 @@ int nfs4_open_delegation_recall(struct dentry *dentry, struct nfs4_state *state)
return err;
}
-static inline int _nfs4_proc_open_confirm(struct rpc_clnt *clnt, const struct nfs_fh *fh, struct nfs4_state_owner *sp, nfs4_stateid *stateid)
+static inline int _nfs4_proc_open_confirm(struct rpc_clnt *clnt, const struct nfs_fh *fh, struct nfs4_state_owner *sp, nfs4_stateid *stateid, struct nfs_seqid *seqid)
{
struct nfs_open_confirmargs arg = {
.fh = fh,
- .seqid = sp->so_seqid,
+ .seqid = seqid,
.stateid = *stateid,
};
struct nfs_open_confirmres res;
@@ -362,7 +371,9 @@ static inline int _nfs4_proc_open_confirm(struct rpc_clnt *clnt, const struct nf
int status;
status = rpc_call_sync(clnt, &msg, RPC_TASK_NOINTR);
- nfs4_increment_seqid(status, sp);
+ /* Confirm the sequence as being established */
+ nfs_confirm_seqid(&sp->so_seqid, status);
+ nfs_increment_open_seqid(status, seqid);
if (status >= 0)
memcpy(stateid, &res.stateid, sizeof(*stateid));
return status;
@@ -380,21 +391,21 @@ static int _nfs4_proc_open(struct inode *dir, struct nfs4_state_owner *sp, stru
int status;
/* Update sequence id. The caller must serialize! */
- o_arg->seqid = sp->so_seqid;
o_arg->id = sp->so_id;
o_arg->clientid = sp->so_client->cl_clientid;
status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
- nfs4_increment_seqid(status, sp);
+ nfs_increment_open_seqid(status, o_arg->seqid);
if (status != 0)
goto out;
update_changeattr(dir, &o_res->cinfo);
if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
status = _nfs4_proc_open_confirm(server->client, &o_res->fh,
- sp, &o_res->stateid);
+ sp, &o_res->stateid, o_arg->seqid);
if (status != 0)
goto out;
}
+ nfs_confirm_seqid(&sp->so_seqid, 0);
if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
status = server->rpc_ops->getattr(server, &o_res->fh, o_res->f_attr);
out:
@@ -465,6 +476,10 @@ static int _nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *st
set_bit(NFS_DELEGATED_STATE, &state->flags);
goto out;
}
+ o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
+ status = -ENOMEM;
+ if (o_arg.seqid == NULL)
+ goto out;
status = _nfs4_proc_open(dir, sp, &o_arg, &o_res);
if (status != 0)
goto out_nodeleg;
@@ -490,6 +505,7 @@ static int _nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *st
nfs_inode_reclaim_delegation(inode, sp->so_cred, &o_res);
}
out_nodeleg:
+ nfs_free_seqid(o_arg.seqid);
clear_bit(NFS_DELEGATED_STATE, &state->flags);
out:
dput(parent);
@@ -667,6 +683,9 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, int flags, st
/* Serialization for the sequence id */
down(&sp->so_sema);
+ o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
+ if (o_arg.seqid == NULL)
+ return -ENOMEM;
status = _nfs4_proc_open(dir, sp, &o_arg, &o_res);
if (status != 0)
goto out_err;
@@ -681,6 +700,7 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, int flags, st
update_open_stateid(state, &o_res.stateid, flags);
if (o_res.delegation_type != 0)
nfs_inode_set_delegation(inode, cred, &o_res);
+ nfs_free_seqid(o_arg.seqid);
up(&sp->so_sema);
nfs4_put_state_owner(sp);
up_read(&clp->cl_sem);
@@ -690,6 +710,7 @@ out_err:
if (sp != NULL) {
if (state != NULL)
nfs4_put_open_state(state);
+ nfs_free_seqid(o_arg.seqid);
up(&sp->so_sema);
nfs4_put_state_owner(sp);
}
@@ -718,7 +739,7 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry,
* It is actually a sign of a bug on the client or on the server.
*
* If we receive a BAD_SEQID error in the particular case of
- * doing an OPEN, we assume that nfs4_increment_seqid() will
+ * doing an OPEN, we assume that nfs_increment_open_seqid() will
* have unhashed the old state_owner for us, and that we can
* therefore safely retry using a new one. We should still warn
* the user though...
@@ -799,7 +820,7 @@ static void nfs4_close_done(struct rpc_task *task)
/* hmm. we are done with the inode, and in the process of freeing
* the state_owner. we keep this around to process errors
*/
- nfs4_increment_seqid(task->tk_status, sp);
+ nfs_increment_open_seqid(task->tk_status, calldata->arg.seqid);
switch (task->tk_status) {
case 0:
memcpy(&state->stateid, &calldata->res.stateid,
@@ -818,6 +839,7 @@ static void nfs4_close_done(struct rpc_task *task)
}
state->state = calldata->arg.open_flags;
nfs4_put_open_state(state);
+ nfs_free_seqid(calldata->arg.seqid);
up(&sp->so_sema);
nfs4_put_state_owner(sp);
up_read(&server->nfs4_state->cl_sem);
@@ -865,7 +887,11 @@ int nfs4_do_close(struct inode *inode, struct nfs4_state *state, mode_t mode)
calldata->state = state;
calldata->arg.fh = NFS_FH(inode);
/* Serialization for the sequence id */
- calldata->arg.seqid = state->owner->so_seqid;
+ calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
+ if (calldata->arg.seqid == NULL) {
+ kfree(calldata);
+ return -ENOMEM;
+ }
calldata->arg.open_flags = mode;
memcpy(&calldata->arg.stateid, &state->stateid,
sizeof(calldata->arg.stateid));
@@ -2729,15 +2755,19 @@ static int _nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock
/* We might have lost the locks! */
if ((lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0)
goto out;
- luargs.seqid = lsp->ls_seqid;
- memcpy(&luargs.stateid, &lsp->ls_stateid, sizeof(luargs.stateid));
+ luargs.seqid = nfs_alloc_seqid(&lsp->ls_seqid);
+ status = -ENOMEM;
+ if (luargs.seqid == NULL)
+ goto out;
+ memcpy(luargs.stateid.data, lsp->ls_stateid.data, sizeof(luargs.stateid.data));
arg.u.locku = &luargs;
status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
- nfs4_increment_lock_seqid(status, lsp);
+ nfs_increment_lock_seqid(status, luargs.seqid);
if (status == 0)
- memcpy(&lsp->ls_stateid, &res.u.stateid,
- sizeof(lsp->ls_stateid));
+ memcpy(lsp->ls_stateid.data, res.u.stateid.data,
+ sizeof(lsp->ls_stateid.data));
+ nfs_free_seqid(luargs.seqid);
out:
up(&state->lock_sema);
if (status == 0)
@@ -2783,9 +2813,13 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *r
.reclaim = reclaim,
.new_lock_owner = 0,
};
- int status;
+ struct nfs_seqid *lock_seqid;
+ int status = -ENOMEM;
- if (!(lsp->ls_flags & NFS_LOCK_INITIALIZED)) {
+ lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid);
+ if (lock_seqid == NULL)
+ return -ENOMEM;
+ if (!(lsp->ls_seqid.flags & NFS_SEQID_CONFIRMED)) {
struct nfs4_state_owner *owner = state->owner;
struct nfs_open_to_lock otl = {
.lock_owner = {
@@ -2793,39 +2827,40 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *r
},
};
- otl.lock_seqid = lsp->ls_seqid;
+ otl.lock_seqid = lock_seqid;
otl.lock_owner.id = lsp->ls_id;
memcpy(&otl.open_stateid, &state->stateid, sizeof(otl.open_stateid));
largs.u.open_lock = &otl;
largs.new_lock_owner = 1;
arg.u.lock = &largs;
down(&owner->so_sema);
- otl.open_seqid = owner->so_seqid;
- status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
- /* increment open_owner seqid on success, and
- * seqid mutating errors */
- nfs4_increment_seqid(status, owner);
- up(&owner->so_sema);
- if (status == 0) {
- lsp->ls_flags |= NFS_LOCK_INITIALIZED;
- lsp->ls_seqid++;
+ otl.open_seqid = nfs_alloc_seqid(&owner->so_seqid);
+ if (otl.open_seqid != NULL) {
+ status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
+ /* increment seqid on success, and seqid mutating errors */
+ nfs_increment_open_seqid(status, otl.open_seqid);
+ nfs_free_seqid(otl.open_seqid);
}
+ up(&owner->so_sema);
+ if (status == 0)
+ nfs_confirm_seqid(&lsp->ls_seqid, 0);
} else {
- struct nfs_exist_lock el = {
- .seqid = lsp->ls_seqid,
- };
+ struct nfs_exist_lock el;
memcpy(&el.stateid, &lsp->ls_stateid, sizeof(el.stateid));
largs.u.exist_lock = ⪙
arg.u.lock = &largs;
+ el.seqid = lock_seqid;
status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
- /* increment seqid on success, and * seqid mutating errors*/
- nfs4_increment_lock_seqid(status, lsp);
}
+ /* increment seqid on success, and seqid mutating errors*/
+ nfs_increment_lock_seqid(status, lock_seqid);
/* save the returned stateid. */
- if (status == 0)
- memcpy(&lsp->ls_stateid, &res.u.stateid, sizeof(nfs4_stateid));
- else if (status == -NFS4ERR_DENIED)
+ if (status == 0) {
+ memcpy(lsp->ls_stateid.data, res.u.stateid.data, sizeof(lsp->ls_stateid.data));
+ lsp->ls_flags |= NFS_LOCK_INITIALIZED;
+ } else if (status == -NFS4ERR_DENIED)
status = -EAGAIN;
+ nfs_free_seqid(lock_seqid);
return status;
}
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index afe587d82f1e..f535c219cf3a 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -264,13 +264,16 @@ nfs4_alloc_state_owner(void)
{
struct nfs4_state_owner *sp;
- sp = kmalloc(sizeof(*sp),GFP_KERNEL);
+ sp = kzalloc(sizeof(*sp),GFP_KERNEL);
if (!sp)
return NULL;
init_MUTEX(&sp->so_sema);
- sp->so_seqid = 0; /* arbitrary */
INIT_LIST_HEAD(&sp->so_states);
INIT_LIST_HEAD(&sp->so_delegations);
+ rpc_init_wait_queue(&sp->so_sequence.wait, "Seqid_waitqueue");
+ sp->so_seqid.sequence = &sp->so_sequence;
+ spin_lock_init(&sp->so_sequence.lock);
+ INIT_LIST_HEAD(&sp->so_sequence.list);
atomic_set(&sp->so_count, 1);
return sp;
}
@@ -553,12 +556,10 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f
struct nfs4_lock_state *lsp;
struct nfs4_client *clp = state->owner->so_client;
- lsp = kmalloc(sizeof(*lsp), GFP_KERNEL);
+ lsp = kzalloc(sizeof(*lsp), GFP_KERNEL);
if (lsp == NULL)
return NULL;
- lsp->ls_flags = 0;
- lsp->ls_seqid = 0; /* arbitrary */
- memset(lsp->ls_stateid.data, 0, sizeof(lsp->ls_stateid.data));
+ lsp->ls_seqid.sequence = &state->owner->so_sequence;
atomic_set(&lsp->ls_count, 1);
lsp->ls_owner = fl_owner;
spin_lock(&clp->cl_lock);
@@ -673,29 +674,102 @@ void nfs4_copy_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t f
nfs4_put_lock_state(lsp);
}
-/*
-* Called with state->lock_sema and clp->cl_sem held.
-*/
-void nfs4_increment_lock_seqid(int status, struct nfs4_lock_state *lsp)
+struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter)
+{
+ struct rpc_sequence *sequence = counter->sequence;
+ struct nfs_seqid *new;
+
+ new = kmalloc(sizeof(*new), GFP_KERNEL);
+ if (new != NULL) {
+ new->sequence = counter;
+ new->task = NULL;
+ spin_lock(&sequence->lock);
+ list_add_tail(&new->list, &sequence->list);
+ spin_unlock(&sequence->lock);
+ }
+ return new;
+}
+
+void nfs_free_seqid(struct nfs_seqid *seqid)
{
- if (status == NFS_OK || seqid_mutating_err(-status))
- lsp->ls_seqid++;
+ struct rpc_sequence *sequence = seqid->sequence->sequence;
+ struct rpc_task *next = NULL;
+
+ spin_lock(&sequence->lock);
+ list_del(&seqid->list);
+ if (!list_empty(&sequence->list)) {
+ next = list_entry(sequence->list.next, struct nfs_seqid, list)->task;
+ if (next)
+ rpc_wake_up_task(next);
+ }
+ spin_unlock(&sequence->lock);
+ kfree(seqid);
}
/*
-* Called with sp->so_sema and clp->cl_sem held.
-*
-* 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()
-*/
-void nfs4_increment_seqid(int status, struct nfs4_state_owner *sp)
-{
- if (status == NFS_OK || seqid_mutating_err(-status))
- sp->so_seqid++;
- /* If the server returns BAD_SEQID, unhash state_owner here */
- if (status == -NFS4ERR_BAD_SEQID)
+ * Called with sp->so_sema and clp->cl_sem held.
+ *
+ * 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()
+ */
+static inline void nfs_increment_seqid(int status, struct nfs_seqid *seqid)
+{
+ switch (status) {
+ case 0:
+ break;
+ case -NFS4ERR_BAD_SEQID:
+ case -NFS4ERR_STALE_CLIENTID:
+ case -NFS4ERR_STALE_STATEID:
+ case -NFS4ERR_BAD_STATEID:
+ case -NFS4ERR_BADXDR:
+ case -NFS4ERR_RESOURCE:
+ case -NFS4ERR_NOFILEHANDLE:
+ /* Non-seqid mutating errors */
+ return;
+ };
+ /*
+ * Note: no locking needed as we are guaranteed to be first
+ * on the sequence list
+ */
+ seqid->sequence->counter++;
+}
+
+void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid)
+{
+ if (status == -NFS4ERR_BAD_SEQID) {
+ struct nfs4_state_owner *sp = container_of(seqid->sequence,
+ struct nfs4_state_owner, so_seqid);
nfs4_drop_state_owner(sp);
+ }
+ return nfs_increment_seqid(status, seqid);
+}
+
+/*
+ * Called with ls->lock_sema and clp->cl_sem held.
+ *
+ * Increment the seqid if the LOCK/LOCKU succeeded, or
+ * failed with a seqid incrementing error -
+ * see comments nfs_fs.h:seqid_mutating_error()
+ */
+void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid)
+{
+ return nfs_increment_seqid(status, seqid);
+}
+
+int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task)
+{
+ struct rpc_sequence *sequence = seqid->sequence->sequence;
+ int status = 0;
+
+ spin_lock(&sequence->lock);
+ if (sequence->list.next != &seqid->list) {
+ seqid->task = task;
+ rpc_sleep_on(&sequence->wait, task, NULL, NULL);
+ status = -EAGAIN;
+ }
+ spin_unlock(&sequence->lock);
+ return status;
}
static int reclaimer(void *);
@@ -791,8 +865,6 @@ static int nfs4_reclaim_open_state(struct nfs4_state_recovery_ops *ops, struct n
if (state->state == 0)
continue;
status = ops->recover_open(sp, state);
- list_for_each_entry(lock, &state->lock_states, ls_locks)
- lock->ls_flags &= ~NFS_LOCK_INITIALIZED;
if (status >= 0) {
status = nfs4_reclaim_locks(ops, state);
if (status < 0)
@@ -831,6 +903,26 @@ out_err:
return status;
}
+static void nfs4_state_mark_reclaim(struct nfs4_client *clp)
+{
+ struct nfs4_state_owner *sp;
+ struct nfs4_state *state;
+ struct nfs4_lock_state *lock;
+
+ /* Reset all sequence ids to zero */
+ list_for_each_entry(sp, &clp->cl_state_owners, so_list) {
+ sp->so_seqid.counter = 0;
+ sp->so_seqid.flags = 0;
+ list_for_each_entry(state, &sp->so_states, open_states) {
+ 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 int reclaimer(void *ptr)
{
struct reclaimer_args *args = (struct reclaimer_args *)ptr;
@@ -864,6 +956,7 @@ restart_loop:
default:
ops = &nfs4_network_partition_recovery_ops;
};
+ nfs4_state_mark_reclaim(clp);
status = __nfs4_init_client(clp);
if (status)
goto out_error;
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 6c564ef9489e..fcd28a29a2f8 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -604,7 +604,7 @@ static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
RESERVE_SPACE(8+sizeof(arg->stateid.data));
WRITE32(OP_CLOSE);
- WRITE32(arg->seqid);
+ WRITE32(arg->seqid->sequence->counter);
WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
return 0;
@@ -732,9 +732,9 @@ static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
struct nfs_open_to_lock *ol = opargs->u.open_lock;
RESERVE_SPACE(40);
- WRITE32(ol->open_seqid);
+ WRITE32(ol->open_seqid->sequence->counter);
WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid));
- WRITE32(ol->lock_seqid);
+ WRITE32(ol->lock_seqid->sequence->counter);
WRITE64(ol->lock_owner.clientid);
WRITE32(4);
WRITE32(ol->lock_owner.id);
@@ -744,7 +744,7 @@ static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
RESERVE_SPACE(20);
WRITEMEM(&el->stateid, sizeof(el->stateid));
- WRITE32(el->seqid);
+ WRITE32(el->seqid->sequence->counter);
}
return 0;
@@ -775,7 +775,7 @@ static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
RESERVE_SPACE(44);
WRITE32(OP_LOCKU);
WRITE32(arg->type);
- WRITE32(opargs->seqid);
+ WRITE32(opargs->seqid->sequence->counter);
WRITEMEM(&opargs->stateid, sizeof(opargs->stateid));
WRITE64(arg->offset);
WRITE64(arg->length);
@@ -826,7 +826,7 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena
*/
RESERVE_SPACE(8);
WRITE32(OP_OPEN);
- WRITE32(arg->seqid);
+ WRITE32(arg->seqid->sequence->counter);
encode_share_access(xdr, arg->open_flags);
RESERVE_SPACE(16);
WRITE64(arg->clientid);
@@ -941,7 +941,7 @@ static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_con
RESERVE_SPACE(8+sizeof(arg->stateid.data));
WRITE32(OP_OPEN_CONFIRM);
WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
- WRITE32(arg->seqid);
+ WRITE32(arg->seqid->sequence->counter);
return 0;
}
@@ -953,7 +953,7 @@ static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closea
RESERVE_SPACE(8+sizeof(arg->stateid.data));
WRITE32(OP_OPEN_DOWNGRADE);
WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
- WRITE32(arg->seqid);
+ WRITE32(arg->seqid->sequence->counter);
encode_share_access(xdr, arg->open_flags);
return 0;
}
@@ -1416,6 +1416,9 @@ static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_clos
};
int status;
+ status = nfs_wait_on_sequence(args->seqid, req->rq_task);
+ if (status != 0)
+ goto out;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
@@ -1437,6 +1440,9 @@ static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_opena
};
int status;
+ status = nfs_wait_on_sequence(args->seqid, req->rq_task);
+ if (status != 0)
+ goto out;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
@@ -1464,6 +1470,9 @@ static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct n
};
int status;
+ status = nfs_wait_on_sequence(args->seqid, req->rq_task);
+ if (status != 0)
+ goto out;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
@@ -1485,6 +1494,9 @@ static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nf
};
int status;
+ status = nfs_wait_on_sequence(args->seqid, req->rq_task);
+ if (status != 0)
+ goto out;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
@@ -1506,6 +1518,9 @@ static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct
};
int status;
+ status = nfs_wait_on_sequence(args->seqid, req->rq_task);
+ if (status != 0)
+ goto out;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
@@ -1525,8 +1540,17 @@ static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_locka
struct compound_hdr hdr = {
.nops = 2,
};
+ struct nfs_lock_opargs *opargs = args->u.lock;
+ struct nfs_seqid *seqid;
int status;
+ if (opargs->new_lock_owner)
+ seqid = opargs->u.open_lock->lock_seqid;
+ else
+ seqid = opargs->u.exist_lock->seqid;
+ status = nfs_wait_on_sequence(seqid, req->rq_task);
+ if (status != 0)
+ goto out;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
@@ -1569,6 +1593,9 @@ static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lock
};
int status;
+ status = nfs_wait_on_sequence(args->u.locku->seqid, req->rq_task);
+ if (status != 0)
+ goto out;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index a2bf6914ff1b..d578912bf9a9 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -96,12 +96,13 @@ struct nfs4_change_info {
u64 after;
};
+struct nfs_seqid;
/*
* Arguments to the open call.
*/
struct nfs_openargs {
const struct nfs_fh * fh;
- __u32 seqid;
+ struct nfs_seqid * seqid;
int open_flags;
__u64 clientid;
__u32 id;
@@ -136,7 +137,7 @@ struct nfs_openres {
struct nfs_open_confirmargs {
const struct nfs_fh * fh;
nfs4_stateid stateid;
- __u32 seqid;
+ struct nfs_seqid * seqid;
};
struct nfs_open_confirmres {
@@ -149,7 +150,7 @@ struct nfs_open_confirmres {
struct nfs_closeargs {
struct nfs_fh * fh;
nfs4_stateid stateid;
- __u32 seqid;
+ struct nfs_seqid * seqid;
int open_flags;
};
@@ -165,15 +166,15 @@ struct nfs_lowner {
};
struct nfs_open_to_lock {
- __u32 open_seqid;
+ struct nfs_seqid * open_seqid;
nfs4_stateid open_stateid;
- __u32 lock_seqid;
+ struct nfs_seqid * lock_seqid;
struct nfs_lowner lock_owner;
};
struct nfs_exist_lock {
nfs4_stateid stateid;
- __u32 seqid;
+ struct nfs_seqid * seqid;
};
struct nfs_lock_opargs {
@@ -186,7 +187,7 @@ struct nfs_lock_opargs {
};
struct nfs_locku_opargs {
- __u32 seqid;
+ struct nfs_seqid * seqid;
nfs4_stateid stateid;
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 16:15:25 +0000