return err;
switch (err) {
case -NFS4ERR_RESOURCE:
+ case -NFS4ERR_LAYOUTTRYLATER:
+ case -NFS4ERR_RECALLCONFLICT:
return -EREMOTEIO;
case -NFS4ERR_WRONGSEC:
return -EPERM;
}
if (state == NULL)
break;
- nfs4_schedule_stateid_recovery(server, state);
+ ret = nfs4_schedule_stateid_recovery(server, state);
+ if (ret < 0)
+ break;
goto wait_on_recovery;
case -NFS4ERR_DELEG_REVOKED:
case -NFS4ERR_ADMIN_REVOKED:
if (state == NULL)
break;
nfs_remove_bad_delegation(state->inode);
- nfs4_schedule_stateid_recovery(server, state);
+ ret = nfs4_schedule_stateid_recovery(server, state);
+ if (ret < 0)
+ break;
goto wait_on_recovery;
case -NFS4ERR_EXPIRED:
- if (state != NULL)
- nfs4_schedule_stateid_recovery(server, state);
+ if (state != NULL) {
+ ret = nfs4_schedule_stateid_recovery(server, state);
+ if (ret < 0)
+ break;
+ }
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_STALE_CLIENTID:
nfs4_schedule_lease_recovery(clp);
int cancelled;
};
+static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server,
+ int err, struct nfs4_exception *exception)
+{
+ if (err != -EINVAL)
+ return false;
+ if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
+ return false;
+ server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1;
+ exception->retry = 1;
+ return true;
+}
+
+static enum open_claim_type4
+nfs4_map_atomic_open_claim(struct nfs_server *server,
+ enum open_claim_type4 claim)
+{
+ if (server->caps & NFS_CAP_ATOMIC_OPEN_V1)
+ return claim;
+ switch (claim) {
+ default:
+ return claim;
+ case NFS4_OPEN_CLAIM_FH:
+ return NFS4_OPEN_CLAIM_NULL;
+ case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
+ return NFS4_OPEN_CLAIM_DELEGATE_CUR;
+ case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
+ return NFS4_OPEN_CLAIM_DELEGATE_PREV;
+ }
+}
static void nfs4_init_opendata_res(struct nfs4_opendata *p)
{
static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs,
+ enum open_claim_type4 claim,
gfp_t gfp_mask)
{
struct dentry *parent = dget_parent(dentry);
p->dir = parent;
p->owner = sp;
atomic_inc(&sp->so_count);
- p->o_arg.fh = NFS_FH(dir);
p->o_arg.open_flags = flags;
p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
/* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
p->o_arg.server = server;
p->o_arg.bitmask = server->attr_bitmask;
p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
- p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
+ p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
+ switch (p->o_arg.claim) {
+ case NFS4_OPEN_CLAIM_NULL:
+ case NFS4_OPEN_CLAIM_DELEGATE_CUR:
+ case NFS4_OPEN_CLAIM_DELEGATE_PREV:
+ p->o_arg.fh = NFS_FH(dir);
+ break;
+ case NFS4_OPEN_CLAIM_PREVIOUS:
+ case NFS4_OPEN_CLAIM_FH:
+ case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
+ case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
+ p->o_arg.fh = NFS_FH(dentry->d_inode);
+ }
if (attrs != NULL && attrs->ia_valid != 0) {
__be32 verf[2];
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
+ if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags))
+ return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
+ test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) ||
(deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
data->o_arg.fmode);
iput(inode);
out:
+ nfs_release_seqid(data->o_arg.seqid);
return state;
err_put_inode:
iput(inode);
return ERR_PTR(-ENOENT);
}
-static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state)
+static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx,
+ struct nfs4_state *state, enum open_claim_type4 claim)
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS);
+ opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0,
+ NULL, claim, GFP_NOFS);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
fmode_t delegation_type = 0;
int status;
- opendata = nfs4_open_recoverdata_alloc(ctx, state);
+ opendata = nfs4_open_recoverdata_alloc(ctx, state,
+ NFS4_OPEN_CLAIM_PREVIOUS);
if (IS_ERR(opendata))
return PTR_ERR(opendata);
- opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS;
- opendata->o_arg.fh = NFS_FH(state->inode);
rcu_read_lock();
delegation = rcu_dereference(NFS_I(state->inode)->delegation);
if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
int err;
do {
err = _nfs4_do_open_reclaim(ctx, state);
+ if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
+ continue;
if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
struct nfs4_opendata *opendata;
int ret;
- opendata = nfs4_open_recoverdata_alloc(ctx, state);
+ opendata = nfs4_open_recoverdata_alloc(ctx, state,
+ NFS4_OPEN_CLAIM_DELEG_CUR_FH);
if (IS_ERR(opendata))
return PTR_ERR(opendata);
- opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR;
nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
ret = nfs4_open_recover(opendata, state);
nfs4_opendata_put(opendata);
case -NFS4ERR_BAD_HIGH_SLOT:
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
case -NFS4ERR_DEADSESSION:
+ set_bit(NFS_DELEGATED_STATE, &state->flags);
nfs4_schedule_session_recovery(server->nfs_client->cl_session, err);
+ err = -EAGAIN;
goto out;
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
+ set_bit(NFS_DELEGATED_STATE, &state->flags);
case -NFS4ERR_EXPIRED:
/* Don't recall a delegation if it was lost */
nfs4_schedule_lease_recovery(server->nfs_client);
+ err = -EAGAIN;
goto out;
- case -ERESTARTSYS:
- /*
- * The show must go on: exit, but mark the
- * stateid as needing recovery.
- */
case -NFS4ERR_DELEG_REVOKED:
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
err = 0;
goto out;
}
+ set_bit(NFS_DELEGATED_STATE, &state->flags);
err = nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
out:
struct nfs4_state_owner *sp = data->owner;
if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
- return;
+ goto out_wait;
/*
* Check if we still need to send an OPEN call, or if we can use
* a delegation instead.
rcu_read_unlock();
out_no_action:
task->tk_action = NULL;
+out_wait:
nfs4_sequence_done(task, &data->o_res.seq_res);
}
static int nfs4_opendata_access(struct rpc_cred *cred,
struct nfs4_opendata *opendata,
- struct nfs4_state *state, fmode_t fmode)
+ struct nfs4_state *state, fmode_t fmode,
+ int openflags)
{
struct nfs_access_entry cache;
u32 mask;
mask = 0;
/* don't check MAY_WRITE - a newly created file may not have
- * write mode bits, but POSIX allows the creating process to write */
- if (fmode & FMODE_READ)
- mask |= MAY_READ;
- if (fmode & FMODE_EXEC)
- mask |= MAY_EXEC;
+ * write mode bits, but POSIX allows the creating process to write.
+ * use openflags to check for exec, because fmode won't
+ * always have FMODE_EXEC set when file open for exec. */
+ if (openflags & __FMODE_EXEC) {
+ /* ONLY check for exec rights */
+ mask = MAY_EXEC;
+ } else if (fmode & FMODE_READ)
+ mask = MAY_READ;
cache.cred = cred;
cache.jiffies = jiffies;
struct nfs4_opendata *opendata;
int ret;
- opendata = nfs4_open_recoverdata_alloc(ctx, state);
+ opendata = nfs4_open_recoverdata_alloc(ctx, state,
+ NFS4_OPEN_CLAIM_FH);
if (IS_ERR(opendata))
return PTR_ERR(opendata);
ret = nfs4_open_recover(opendata, state);
do {
err = _nfs4_open_expired(ctx, state);
+ if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
+ continue;
switch (err) {
default:
goto out;
sattr->ia_valid |= ATTR_MTIME;
}
+static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
+ fmode_t fmode,
+ int flags,
+ struct nfs4_state **res)
+{
+ struct nfs4_state_owner *sp = opendata->owner;
+ struct nfs_server *server = sp->so_server;
+ struct nfs4_state *state;
+ unsigned int seq;
+ int ret;
+
+ seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
+
+ ret = _nfs4_proc_open(opendata);
+ if (ret != 0)
+ goto out;
+
+ state = nfs4_opendata_to_nfs4_state(opendata);
+ ret = PTR_ERR(state);
+ if (IS_ERR(state))
+ goto out;
+ if (server->caps & NFS_CAP_POSIX_LOCK)
+ set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
+
+ ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
+ if (ret != 0)
+ goto out;
+
+ if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) {
+ nfs4_schedule_stateid_recovery(server, state);
+ nfs4_wait_clnt_recover(server->nfs_client);
+ }
+ *res = state;
+out:
+ return ret;
+}
+
/*
* Returns a referenced nfs4_state
*/
struct nfs4_state *state = NULL;
struct nfs_server *server = NFS_SERVER(dir);
struct nfs4_opendata *opendata;
+ enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
int status;
/* Protect against reboot recovery conflicts */
if (dentry->d_inode != NULL)
nfs4_return_incompatible_delegation(dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL);
+ if (dentry->d_inode)
+ claim = NFS4_OPEN_CLAIM_FH;
+ opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr,
+ claim, GFP_KERNEL);
if (opendata == NULL)
goto err_put_state_owner;
if (dentry->d_inode != NULL)
opendata->state = nfs4_get_open_state(dentry->d_inode, sp);
- status = _nfs4_proc_open(opendata);
- if (status != 0)
- goto err_opendata_put;
-
- state = nfs4_opendata_to_nfs4_state(opendata);
- status = PTR_ERR(state);
- if (IS_ERR(state))
- goto err_opendata_put;
- if (server->caps & NFS_CAP_POSIX_LOCK)
- set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
-
- status = nfs4_opendata_access(cred, opendata, state, fmode);
+ status = _nfs4_open_and_get_state(opendata, fmode, flags, &state);
if (status != 0)
goto err_opendata_put;
struct rpc_cred *cred,
struct nfs4_threshold **ctx_th)
{
+ struct nfs_server *server = NFS_SERVER(dir);
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
exception.retry = 1;
continue;
}
- res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir),
+ if (nfs4_clear_cap_atomic_open_v1(server, status, &exception))
+ continue;
+ res = ERR_PTR(nfs4_handle_exception(server,
status, &exception));
} while (exception.retry);
return res;
nfs_fattr_init(fattr);
- if (state != NULL) {
+ if (state != NULL && nfs4_valid_open_stateid(state)) {
struct nfs_lockowner lockowner = {
.l_owner = current->files,
.l_pid = current->tgid,
nfs4_put_open_state(calldata->state);
nfs_free_seqid(calldata->arg.seqid);
nfs4_put_state_owner(sp);
- nfs_sb_deactive_async(sb);
+ nfs_sb_deactive(sb);
kfree(calldata);
}
dprintk("%s: begin!\n", __func__);
if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
- return;
+ goto out_wait;
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
calldata->arg.fmode &= ~FMODE_WRITE;
}
}
+ if (!nfs4_valid_open_stateid(state))
+ call_close = 0;
spin_unlock(&state->owner->so_lock);
if (!call_close) {
/* Note: exit _without_ calling nfs4_close_done */
- task->tk_action = NULL;
- nfs4_sequence_done(task, &calldata->res.seq_res);
- goto out;
+ goto out_no_action;
}
if (calldata->arg.fmode == 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
if (calldata->roc &&
pnfs_roc_drain(inode, &calldata->roc_barrier, task))
- goto out;
+ goto out_wait;
}
nfs_fattr_init(calldata->res.fattr);
&calldata->res.seq_res,
task) != 0)
nfs_release_seqid(calldata->arg.seqid);
-out:
dprintk("%s: done!\n", __func__);
+ return;
+out_no_action:
+ task->tk_action = NULL;
+out_wait:
+ nfs4_sequence_done(task, &calldata->res.seq_res);
}
static const struct rpc_call_ops nfs4_close_ops = {
int status;
if (pnfs_ld_layoutret_on_setattr(inode))
- pnfs_return_layout(inode);
+ pnfs_commit_and_return_layout(inode);
nfs_fattr_init(fattr);
return err;
}
+int nfs4_set_rw_stateid(nfs4_stateid *stateid,
+ const struct nfs_open_context *ctx,
+ const struct nfs_lock_context *l_ctx,
+ fmode_t fmode)
+{
+ const struct nfs_lockowner *lockowner = NULL;
+
+ if (l_ctx != NULL)
+ lockowner = &l_ctx->lockowner;
+ return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner);
+}
+EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid);
+
+static bool nfs4_stateid_is_current(nfs4_stateid *stateid,
+ const struct nfs_open_context *ctx,
+ const struct nfs_lock_context *l_ctx,
+ fmode_t fmode)
+{
+ nfs4_stateid current_stateid;
+
+ if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode))
+ return false;
+ return nfs4_stateid_match(stateid, ¤t_stateid);
+}
+
+static bool nfs4_error_stateid_expired(int err)
+{
+ switch (err) {
+ case -NFS4ERR_DELEG_REVOKED:
+ case -NFS4ERR_ADMIN_REVOKED:
+ case -NFS4ERR_BAD_STATEID:
+ case -NFS4ERR_STALE_STATEID:
+ case -NFS4ERR_OLD_STATEID:
+ case -NFS4ERR_OPENMODE:
+ case -NFS4ERR_EXPIRED:
+ return true;
+ }
+ return false;
+}
+
void __nfs4_read_done_cb(struct nfs_read_data *data)
{
nfs_invalidate_atime(data->header->inode);
return 0;
}
+static bool nfs4_read_stateid_changed(struct rpc_task *task,
+ struct nfs_readargs *args)
+{
+
+ if (!nfs4_error_stateid_expired(task->tk_status) ||
+ nfs4_stateid_is_current(&args->stateid,
+ args->context,
+ args->lock_context,
+ FMODE_READ))
+ return false;
+ rpc_restart_call_prepare(task);
+ return true;
+}
+
static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
if (!nfs4_sequence_done(task, &data->res.seq_res))
return -EAGAIN;
-
+ if (nfs4_read_stateid_changed(task, &data->args))
+ return -EAGAIN;
return data->read_done_cb ? data->read_done_cb(task, data) :
nfs4_read_done_cb(task, data);
}
static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data)
{
- nfs4_setup_sequence(NFS_SERVER(data->header->inode),
+ if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
&data->args.seq_args,
&data->res.seq_res,
- task);
+ task))
+ return;
+ nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
+ data->args.lock_context, FMODE_READ);
}
static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
+static bool nfs4_write_stateid_changed(struct rpc_task *task,
+ struct nfs_writeargs *args)
+{
+
+ if (!nfs4_error_stateid_expired(task->tk_status) ||
+ nfs4_stateid_is_current(&args->stateid,
+ args->context,
+ args->lock_context,
+ FMODE_WRITE))
+ return false;
+ rpc_restart_call_prepare(task);
+ return true;
+}
+
static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (!nfs4_sequence_done(task, &data->res.seq_res))
return -EAGAIN;
+ if (nfs4_write_stateid_changed(task, &data->args))
+ return -EAGAIN;
return data->write_done_cb ? data->write_done_cb(task, data) :
nfs4_write_done_cb(task, data);
}
static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data)
{
- nfs4_setup_sequence(NFS_SERVER(data->header->inode),
+ if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
&data->args.seq_args,
&data->res.seq_res,
- task);
+ task))
+ return;
+ nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
+ data->args.lock_context, FMODE_WRITE);
}
static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
case -NFS4ERR_OPENMODE:
if (state == NULL)
break;
- nfs4_schedule_stateid_recovery(server, state);
+ if (nfs4_schedule_stateid_recovery(server, state) < 0)
+ goto stateid_invalid;
goto wait_on_recovery;
case -NFS4ERR_EXPIRED:
- if (state != NULL)
- nfs4_schedule_stateid_recovery(server, state);
+ if (state != NULL) {
+ if (nfs4_schedule_stateid_recovery(server, state) < 0)
+ goto stateid_invalid;
+ }
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_STALE_CLIENTID:
nfs4_schedule_lease_recovery(clp);
}
task->tk_status = nfs4_map_errors(task->tk_status);
return 0;
+stateid_invalid:
+ task->tk_status = -EIO;
+ return 0;
wait_on_recovery:
rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
struct nfs4_unlockdata *calldata = data;
if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
- return;
+ goto out_wait;
if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) {
/* Note: exit _without_ running nfs4_locku_done */
- task->tk_action = NULL;
- nfs4_sequence_done(task, &calldata->res.seq_res);
- return;
+ goto out_no_action;
}
calldata->timestamp = jiffies;
if (nfs4_setup_sequence(calldata->server,
&calldata->res.seq_res,
task) != 0)
nfs_release_seqid(calldata->arg.seqid);
+ return;
+out_no_action:
+ task->tk_action = NULL;
+out_wait:
+ nfs4_sequence_done(task, &calldata->res.seq_res);
}
static const struct rpc_call_ops nfs4_locku_ops = {
static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
{
- struct nfs_inode *nfsi = NFS_I(state->inode);
+ struct inode *inode = state->inode;
+ struct nfs4_state_owner *sp = state->owner;
+ struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_seqid *seqid;
struct nfs4_lock_state *lsp;
struct rpc_task *task;
status = nfs4_set_lock_state(state, request);
/* Unlock _before_ we do the RPC call */
request->fl_flags |= FL_EXISTS;
+ /* Exclude nfs_delegation_claim_locks() */
+ mutex_lock(&sp->so_delegreturn_mutex);
+ /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
down_read(&nfsi->rwsem);
if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
up_read(&nfsi->rwsem);
+ mutex_unlock(&sp->so_delegreturn_mutex);
goto out;
}
up_read(&nfsi->rwsem);
+ mutex_unlock(&sp->so_delegreturn_mutex);
if (status != 0)
goto out;
/* Is this a delegated lock? */
dprintk("%s: begin!\n", __func__);
if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
- return;
+ goto out_wait;
/* Do we need to do an open_to_lock_owner? */
if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) {
data->res.open_seqid = data->arg.open_seqid;
} else
data->arg.new_lock_owner = 0;
+ if (!nfs4_valid_open_stateid(state)) {
+ data->rpc_status = -EBADF;
+ task->tk_action = NULL;
+ goto out_release_open_seqid;
+ }
data->timestamp = jiffies;
if (nfs4_setup_sequence(data->server,
&data->arg.seq_args,
&data->res.seq_res,
task) == 0)
return;
+out_release_open_seqid:
nfs_release_seqid(data->arg.open_seqid);
out_release_lock_seqid:
nfs_release_seqid(data->arg.lock_seqid);
+out_wait:
+ nfs4_sequence_done(task, &data->res.seq_res);
dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
}
static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
+ struct nfs4_state_owner *sp = state->owner;
struct nfs_inode *nfsi = NFS_I(state->inode);
unsigned char fl_flags = request->fl_flags;
+ unsigned int seq;
int status = -ENOLCK;
if ((fl_flags & FL_POSIX) &&
status = do_vfs_lock(request->fl_file, request);
goto out_unlock;
}
+ seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
+ up_read(&nfsi->rwsem);
status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
if (status != 0)
+ goto out;
+ down_read(&nfsi->rwsem);
+ if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) {
+ status = -NFS4ERR_DELAY;
goto out_unlock;
+ }
/* Note: we always want to sleep here! */
request->fl_flags = fl_flags | FL_SLEEP;
if (do_vfs_lock(request->fl_file, request) < 0)
case 0:
case -ESTALE:
goto out;
- case -NFS4ERR_EXPIRED:
- nfs4_schedule_stateid_recovery(server, state);
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
+ set_bit(NFS_DELEGATED_STATE, &state->flags);
+ case -NFS4ERR_EXPIRED:
nfs4_schedule_lease_recovery(server->nfs_client);
+ err = -EAGAIN;
goto out;
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
case -NFS4ERR_BAD_HIGH_SLOT:
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
case -NFS4ERR_DEADSESSION:
+ set_bit(NFS_DELEGATED_STATE, &state->flags);
nfs4_schedule_session_recovery(server->nfs_client->cl_session, err);
+ err = -EAGAIN;
goto out;
- case -ERESTARTSYS:
- /*
- * The show must go on: exit, but mark the
- * stateid as needing recovery.
- */
case -NFS4ERR_DELEG_REVOKED:
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
/* kill_proc(fl->fl_pid, SIGLOST, 1); */
err = 0;
goto out;
- case -NFS4ERR_DELAY:
- break;
}
+ set_bit(NFS_DELEGATED_STATE, &state->flags);
err = nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
out:
struct nfs_server *server = NFS_SERVER(inode);
struct pnfs_layout_hdr *lo;
struct nfs4_state *state = NULL;
+ unsigned long timeo, giveup;
dprintk("--> %s\n", __func__);
goto out;
case -NFS4ERR_LAYOUTTRYLATER:
case -NFS4ERR_RECALLCONFLICT:
- task->tk_status = -NFS4ERR_DELAY;
+ timeo = rpc_get_timeout(task->tk_client);
+ giveup = lgp->args.timestamp + timeo;
+ if (time_after(giveup, jiffies))
+ task->tk_status = -NFS4ERR_DELAY;
break;
case -NFS4ERR_EXPIRED:
case -NFS4ERR_BAD_STATEID:
static void nfs4_layoutget_release(void *calldata)
{
struct nfs4_layoutget *lgp = calldata;
- struct nfs_server *server = NFS_SERVER(lgp->args.inode);
+ struct inode *inode = lgp->args.inode;
+ struct nfs_server *server = NFS_SERVER(inode);
size_t max_pages = max_response_pages(server);
dprintk("--> %s\n", __func__);
nfs4_free_pages(lgp->args.layout.pages, max_pages);
+ pnfs_put_layout_hdr(NFS_I(inode)->layout);
put_nfs_open_context(lgp->args.ctx);
kfree(calldata);
dprintk("<-- %s\n", __func__);
struct pnfs_layout_segment *
nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags)
{
- struct nfs_server *server = NFS_SERVER(lgp->args.inode);
+ struct inode *inode = lgp->args.inode;
+ struct nfs_server *server = NFS_SERVER(inode);
size_t max_pages = max_response_pages(server);
struct rpc_task *task;
struct rpc_message msg = {
return ERR_PTR(-ENOMEM);
}
lgp->args.layout.pglen = max_pages * PAGE_SIZE;
+ lgp->args.timestamp = jiffies;
lgp->res.layoutp = &lgp->args.layout;
lgp->res.seq_res.sr_slot = NULL;
nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0);
+
+ /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
+ pnfs_get_layout_hdr(NFS_I(inode)->layout);
+
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return ERR_CAST(task);
status = nfs4_wait_for_completion_rpc_task(task);
if (status == 0)
status = task->tk_status;
- if (status == 0)
+ /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
+ if (status == 0 && lgp->res.layoutp->len)
lseg = pnfs_layout_process(lgp);
rpc_put_task(task);
dprintk("<-- %s status=%d\n", __func__, status);
static void nfs4_layoutcommit_release(void *calldata)
{
struct nfs4_layoutcommit_data *data = calldata;
- struct pnfs_layout_segment *lseg, *tmp;
- unsigned long *bitlock = &NFS_I(data->args.inode)->flags;
pnfs_cleanup_layoutcommit(data);
- /* Matched by references in pnfs_set_layoutcommit */
- list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) {
- list_del_init(&lseg->pls_lc_list);
- if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT,
- &lseg->pls_flags))
- pnfs_put_lseg(lseg);
- }
-
- clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock);
- smp_mb__after_clear_bit();
- wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING);
-
put_rpccred(data->cred);
kfree(data);
}
static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
.minor_version = 0,
+ .init_caps = NFS_CAP_READDIRPLUS
+ | NFS_CAP_ATOMIC_OPEN
+ | NFS_CAP_CHANGE_ATTR
+ | NFS_CAP_POSIX_LOCK,
.call_sync = _nfs4_call_sync,
.match_stateid = nfs4_match_stateid,
.find_root_sec = nfs4_find_root_sec,
#if defined(CONFIG_NFS_V4_1)
static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
.minor_version = 1,
+ .init_caps = NFS_CAP_READDIRPLUS
+ | NFS_CAP_ATOMIC_OPEN
+ | NFS_CAP_CHANGE_ATTR
+ | NFS_CAP_POSIX_LOCK
+ | NFS_CAP_STATEID_NFSV41
+ | NFS_CAP_ATOMIC_OPEN_V1,
.call_sync = nfs4_call_sync_sequence,
.match_stateid = nfs41_match_stateid,
.find_root_sec = nfs41_find_root_sec,
projects / linux-imx.git / blobdiff