/** Implementation of client-side PortalRPC interfaces */
#define DEBUG_SUBSYSTEM S_RPC
-#ifndef __KERNEL__
-#include <errno.h>
-#include <signal.h>
-#include <liblustre.h>
-#endif
#include <obd_support.h>
#include <obd_class.h>
#include "ptlrpc_internal.h"
static int ptlrpc_send_new_req(struct ptlrpc_request *req);
+static int ptlrpcd_check_work(struct ptlrpc_request *req);
/**
* Initialize passed in client structure \a cl.
}
/* Adjust expected network latency */
-static void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
- unsigned int service_time)
+void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
+ unsigned int service_time)
{
unsigned int nl, oldnl;
struct imp_at *at;
* If anything goes wrong just ignore it - same as if it never happened
*/
static int ptlrpc_at_recv_early_reply(struct ptlrpc_request *req)
+__must_hold(&req->rq_lock)
{
struct ptlrpc_request *early_req;
time_t olddl;
spin_lock(&req->rq_lock);
olddl = req->rq_deadline;
- /* server assumes it now has rq_timeout from when it sent the
- * early reply, so client should give it at least that long. */
- req->rq_deadline = cfs_time_current_sec() + req->rq_timeout +
+ /* server assumes it now has rq_timeout from when the request
+ * arrived, so the client should give it at least that long.
+ * since we don't know the arrival time we'll use the original
+ * sent time */
+ req->rq_deadline = req->rq_sent + req->rq_timeout +
ptlrpc_at_get_net_latency(req);
DEBUG_REQ(D_ADAPTTO, req,
struct kmem_cache *request_cache;
-int ptlrpc_request_cache_init()
+int ptlrpc_request_cache_init(void)
{
request_cache = kmem_cache_create("ptlrpc_cache",
sizeof(struct ptlrpc_request),
return request_cache == NULL ? -ENOMEM : 0;
}
-void ptlrpc_request_cache_fini()
+void ptlrpc_request_cache_fini(void)
{
kmem_cache_destroy(request_cache);
}
-struct ptlrpc_request *ptlrpc_request_cache_alloc(int flags)
+struct ptlrpc_request *ptlrpc_request_cache_alloc(gfp_t flags)
{
struct ptlrpc_request *req;
*/
void ptlrpc_free_rq_pool(struct ptlrpc_request_pool *pool)
{
- cfs_list_t *l, *tmp;
+ struct list_head *l, *tmp;
struct ptlrpc_request *req;
LASSERT(pool != NULL);
spin_lock(&pool->prp_lock);
- cfs_list_for_each_safe(l, tmp, &pool->prp_req_list) {
- req = cfs_list_entry(l, struct ptlrpc_request, rq_list);
- cfs_list_del(&req->rq_list);
+ list_for_each_safe(l, tmp, &pool->prp_req_list) {
+ req = list_entry(l, struct ptlrpc_request, rq_list);
+ list_del(&req->rq_list);
LASSERT(req->rq_reqbuf);
LASSERT(req->rq_reqbuf_len == pool->prp_rq_size);
OBD_FREE_LARGE(req->rq_reqbuf, pool->prp_rq_size);
while (size < pool->prp_rq_size)
size <<= 1;
- LASSERTF(cfs_list_empty(&pool->prp_req_list) ||
+ LASSERTF(list_empty(&pool->prp_req_list) ||
size == pool->prp_rq_size,
"Trying to change pool size with nonempty pool "
"from %d to %d bytes\n", pool->prp_rq_size, size);
struct lustre_msg *msg;
spin_unlock(&pool->prp_lock);
- req = ptlrpc_request_cache_alloc(__GFP_IO);
+ req = ptlrpc_request_cache_alloc(GFP_NOFS);
if (!req)
return;
OBD_ALLOC_LARGE(msg, size);
req->rq_reqbuf_len = size;
req->rq_pool = pool;
spin_lock(&pool->prp_lock);
- cfs_list_add_tail(&req->rq_list, &pool->prp_req_list);
+ list_add_tail(&req->rq_list, &pool->prp_req_list);
}
spin_unlock(&pool->prp_lock);
return;
*/
struct ptlrpc_request_pool *
ptlrpc_init_rq_pool(int num_rq, int msgsize,
- void (*populate_pool)(struct ptlrpc_request_pool *, int))
+ void (*populate_pool)(struct ptlrpc_request_pool *, int))
{
- struct ptlrpc_request_pool *pool;
+ struct ptlrpc_request_pool *pool;
- OBD_ALLOC(pool, sizeof (struct ptlrpc_request_pool));
- if (!pool)
- return NULL;
+ OBD_ALLOC(pool, sizeof(struct ptlrpc_request_pool));
+ if (!pool)
+ return NULL;
- /* Request next power of two for the allocation, because internally
- kernel would do exactly this */
+ /* Request next power of two for the allocation, because internally
+ kernel would do exactly this */
spin_lock_init(&pool->prp_lock);
- CFS_INIT_LIST_HEAD(&pool->prp_req_list);
- pool->prp_rq_size = msgsize + SPTLRPC_MAX_PAYLOAD;
- pool->prp_populate = populate_pool;
+ INIT_LIST_HEAD(&pool->prp_req_list);
+ pool->prp_rq_size = msgsize + SPTLRPC_MAX_PAYLOAD;
+ pool->prp_populate = populate_pool;
- populate_pool(pool, num_rq);
+ populate_pool(pool, num_rq);
- if (cfs_list_empty(&pool->prp_req_list)) {
- /* have not allocated a single request for the pool */
- OBD_FREE(pool, sizeof (struct ptlrpc_request_pool));
- pool = NULL;
- }
- return pool;
+ if (list_empty(&pool->prp_req_list)) {
+ /* have not allocated a single request for the pool */
+ OBD_FREE(pool, sizeof(struct ptlrpc_request_pool));
+ pool = NULL;
+ }
+ return pool;
}
EXPORT_SYMBOL(ptlrpc_init_rq_pool);
* in writeout path, where this matters, this is safe to do, because
* nothing is lost in this case, and when some in-flight requests
* complete, this code will be called again. */
- if (unlikely(cfs_list_empty(&pool->prp_req_list))) {
+ if (unlikely(list_empty(&pool->prp_req_list))) {
spin_unlock(&pool->prp_lock);
return NULL;
}
- request = cfs_list_entry(pool->prp_req_list.next, struct ptlrpc_request,
- rq_list);
- cfs_list_del_init(&request->rq_list);
+ request = list_entry(pool->prp_req_list.next, struct ptlrpc_request,
+ rq_list);
+ list_del_init(&request->rq_list);
spin_unlock(&pool->prp_lock);
LASSERT(request->rq_reqbuf);
struct ptlrpc_request_pool *pool = request->rq_pool;
spin_lock(&pool->prp_lock);
- LASSERT(cfs_list_empty(&request->rq_list));
+ LASSERT(list_empty(&request->rq_list));
LASSERT(!request->rq_receiving_reply);
- cfs_list_add_tail(&request->rq_list, &pool->prp_req_list);
+ list_add_tail(&request->rq_list, &pool->prp_req_list);
spin_unlock(&pool->prp_lock);
}
ptlrpc_at_set_req_timeout(request);
spin_lock_init(&request->rq_lock);
- CFS_INIT_LIST_HEAD(&request->rq_list);
- CFS_INIT_LIST_HEAD(&request->rq_timed_list);
- CFS_INIT_LIST_HEAD(&request->rq_replay_list);
- CFS_INIT_LIST_HEAD(&request->rq_ctx_chain);
- CFS_INIT_LIST_HEAD(&request->rq_set_chain);
- CFS_INIT_LIST_HEAD(&request->rq_history_list);
- CFS_INIT_LIST_HEAD(&request->rq_exp_list);
+ INIT_LIST_HEAD(&request->rq_list);
+ INIT_LIST_HEAD(&request->rq_timed_list);
+ INIT_LIST_HEAD(&request->rq_replay_list);
+ INIT_LIST_HEAD(&request->rq_ctx_chain);
+ INIT_LIST_HEAD(&request->rq_set_chain);
+ INIT_LIST_HEAD(&request->rq_history_list);
+ INIT_LIST_HEAD(&request->rq_exp_list);
init_waitqueue_head(&request->rq_reply_waitq);
init_waitqueue_head(&request->rq_set_waitq);
request->rq_xid = ptlrpc_next_xid();
- cfs_atomic_set(&request->rq_refcount, 1);
+ atomic_set(&request->rq_refcount, 1);
lustre_msg_set_opc(request->rq_reqmsg, opcode);
*/
static inline
struct ptlrpc_request *__ptlrpc_request_alloc(struct obd_import *imp,
- struct ptlrpc_request_pool *pool)
+ struct ptlrpc_request_pool *pool)
{
struct ptlrpc_request *request = NULL;
request = ptlrpc_prep_req_from_pool(pool);
if (!request)
- request = ptlrpc_request_cache_alloc(__GFP_IO);
+ request = ptlrpc_request_cache_alloc(GFP_NOFS);
- if (request) {
- LASSERTF((unsigned long)imp > 0x1000, "%p", imp);
- LASSERT(imp != LP_POISON);
- LASSERTF((unsigned long)imp->imp_client > 0x1000, "%p",
- imp->imp_client);
- LASSERT(imp->imp_client != LP_POISON);
+ if (request) {
+ LASSERTF((unsigned long)imp > 0x1000, "%p\n", imp);
+ LASSERT(imp != LP_POISON);
+ LASSERTF((unsigned long)imp->imp_client > 0x1000, "%p\n",
+ imp->imp_client);
+ LASSERT(imp->imp_client != LP_POISON);
- request->rq_import = class_import_get(imp);
- } else {
- CERROR("request allocation out of memory\n");
- }
+ request->rq_import = class_import_get(imp);
+ } else {
+ CERROR("request allocation out of memory\n");
+ }
- return request;
+ return request;
}
/**
OBD_ALLOC(set, sizeof *set);
if (!set)
RETURN(NULL);
- cfs_atomic_set(&set->set_refcount, 1);
- CFS_INIT_LIST_HEAD(&set->set_requests);
+ atomic_set(&set->set_refcount, 1);
+ INIT_LIST_HEAD(&set->set_requests);
init_waitqueue_head(&set->set_waitq);
- cfs_atomic_set(&set->set_new_count, 0);
- cfs_atomic_set(&set->set_remaining, 0);
+ atomic_set(&set->set_new_count, 0);
+ atomic_set(&set->set_remaining, 0);
spin_lock_init(&set->set_new_req_lock);
- CFS_INIT_LIST_HEAD(&set->set_new_requests);
- CFS_INIT_LIST_HEAD(&set->set_cblist);
+ INIT_LIST_HEAD(&set->set_new_requests);
+ INIT_LIST_HEAD(&set->set_cblist);
set->set_max_inflight = UINT_MAX;
set->set_producer = NULL;
set->set_producer_arg = NULL;
*/
void ptlrpc_set_destroy(struct ptlrpc_request_set *set)
{
- cfs_list_t *tmp;
- cfs_list_t *next;
- int expected_phase;
- int n = 0;
- ENTRY;
+ struct list_head *tmp;
+ struct list_head *next;
+ int expected_phase;
+ int n = 0;
+ ENTRY;
- /* Requests on the set should either all be completed, or all be new */
- expected_phase = (cfs_atomic_read(&set->set_remaining) == 0) ?
- RQ_PHASE_COMPLETE : RQ_PHASE_NEW;
- cfs_list_for_each (tmp, &set->set_requests) {
- struct ptlrpc_request *req =
- cfs_list_entry(tmp, struct ptlrpc_request,
- rq_set_chain);
+ /* Requests on the set should either all be completed, or all be new */
+ expected_phase = (atomic_read(&set->set_remaining) == 0) ?
+ RQ_PHASE_COMPLETE : RQ_PHASE_NEW;
+ list_for_each(tmp, &set->set_requests) {
+ struct ptlrpc_request *req =
+ list_entry(tmp, struct ptlrpc_request,
+ rq_set_chain);
- LASSERT(req->rq_phase == expected_phase);
- n++;
- }
+ LASSERT(req->rq_phase == expected_phase);
+ n++;
+ }
- LASSERTF(cfs_atomic_read(&set->set_remaining) == 0 ||
- cfs_atomic_read(&set->set_remaining) == n, "%d / %d\n",
- cfs_atomic_read(&set->set_remaining), n);
+ LASSERTF(atomic_read(&set->set_remaining) == 0 ||
+ atomic_read(&set->set_remaining) == n, "%d / %d\n",
+ atomic_read(&set->set_remaining), n);
- cfs_list_for_each_safe(tmp, next, &set->set_requests) {
- struct ptlrpc_request *req =
- cfs_list_entry(tmp, struct ptlrpc_request,
- rq_set_chain);
- cfs_list_del_init(&req->rq_set_chain);
+ list_for_each_safe(tmp, next, &set->set_requests) {
+ struct ptlrpc_request *req =
+ list_entry(tmp, struct ptlrpc_request,
+ rq_set_chain);
+ list_del_init(&req->rq_set_chain);
- LASSERT(req->rq_phase == expected_phase);
+ LASSERT(req->rq_phase == expected_phase);
- if (req->rq_phase == RQ_PHASE_NEW) {
- ptlrpc_req_interpret(NULL, req, -EBADR);
- cfs_atomic_dec(&set->set_remaining);
- }
+ if (req->rq_phase == RQ_PHASE_NEW) {
+ ptlrpc_req_interpret(NULL, req, -EBADR);
+ atomic_dec(&set->set_remaining);
+ }
spin_lock(&req->rq_lock);
req->rq_set = NULL;
ptlrpc_req_finished (req);
}
- LASSERT(cfs_atomic_read(&set->set_remaining) == 0);
+ LASSERT(atomic_read(&set->set_remaining) == 0);
- ptlrpc_reqset_put(set);
- EXIT;
+ ptlrpc_reqset_put(set);
+ EXIT;
}
EXPORT_SYMBOL(ptlrpc_set_destroy);
int ptlrpc_set_add_cb(struct ptlrpc_request_set *set,
set_interpreter_func fn, void *data)
{
- struct ptlrpc_set_cbdata *cbdata;
+ struct ptlrpc_set_cbdata *cbdata;
- OBD_ALLOC_PTR(cbdata);
- if (cbdata == NULL)
- RETURN(-ENOMEM);
+ OBD_ALLOC_PTR(cbdata);
+ if (cbdata == NULL)
+ RETURN(-ENOMEM);
- cbdata->psc_interpret = fn;
- cbdata->psc_data = data;
- cfs_list_add_tail(&cbdata->psc_item, &set->set_cblist);
+ cbdata->psc_interpret = fn;
+ cbdata->psc_data = data;
+ list_add_tail(&cbdata->psc_item, &set->set_cblist);
- RETURN(0);
+ RETURN(0);
}
EXPORT_SYMBOL(ptlrpc_set_add_cb);
void ptlrpc_set_add_req(struct ptlrpc_request_set *set,
struct ptlrpc_request *req)
{
- LASSERT(cfs_list_empty(&req->rq_set_chain));
+ LASSERT(list_empty(&req->rq_set_chain));
/* The set takes over the caller's request reference */
- cfs_list_add_tail(&req->rq_set_chain, &set->set_requests);
+ list_add_tail(&req->rq_set_chain, &set->set_requests);
req->rq_set = set;
- cfs_atomic_inc(&set->set_remaining);
+ atomic_inc(&set->set_remaining);
req->rq_queued_time = cfs_time_current();
if (req->rq_reqmsg != NULL)
*/
req->rq_set = set;
req->rq_queued_time = cfs_time_current();
- cfs_list_add_tail(&req->rq_set_chain, &set->set_new_requests);
- count = cfs_atomic_inc_return(&set->set_new_count);
+ list_add_tail(&req->rq_set_chain, &set->set_new_requests);
+ count = atomic_inc_return(&set->set_new_count);
spin_unlock(&set->set_new_req_lock);
/* Only need to call wakeup once for the first entry. */
D_HA : D_ERROR, req, "IMP_CLOSED ");
*status = -EIO;
} else if (ptlrpc_send_limit_expired(req)) {
- /* probably doesn't need to be a D_ERROR after initial testing */
- DEBUG_REQ(D_ERROR, req, "send limit expired ");
- *status = -EIO;
- } else if (req->rq_send_state == LUSTRE_IMP_CONNECTING &&
- imp->imp_state == LUSTRE_IMP_CONNECTING) {
- /* allow CONNECT even if import is invalid */ ;
- if (cfs_atomic_read(&imp->imp_inval_count) != 0) {
- DEBUG_REQ(D_ERROR, req, "invalidate in flight");
- *status = -EIO;
- }
+ /* probably doesn't need to be a D_ERROR after initial testing*/
+ DEBUG_REQ(D_HA, req, "send limit expired ");
+ *status = -ETIMEDOUT;
+ } else if (req->rq_send_state == LUSTRE_IMP_CONNECTING &&
+ imp->imp_state == LUSTRE_IMP_CONNECTING) {
+ /* allow CONNECT even if import is invalid */ ;
+ if (atomic_read(&imp->imp_inval_count) != 0) {
+ DEBUG_REQ(D_ERROR, req, "invalidate in flight");
+ *status = -EIO;
+ }
} else if (imp->imp_invalid || imp->imp_obd->obd_no_recov) {
if (!imp->imp_deactive)
DEBUG_REQ(D_NET, req, "IMP_INVALID");
*status = -EIO;
} else if (req->rq_send_state != imp->imp_state) {
/* invalidate in progress - any requests should be drop */
- if (cfs_atomic_read(&imp->imp_inval_count) != 0) {
+ if (atomic_read(&imp->imp_inval_count) != 0) {
DEBUG_REQ(D_ERROR, req, "invalidate in flight");
*status = -EIO;
} else if (imp->imp_dlm_fake || req->rq_no_delay) {
LASSERT(obd != NULL);
/* repbuf must be unlinked */
- LASSERT(!req->rq_receiving_reply && !req->rq_must_unlink);
+ LASSERT(!req->rq_receiving_reply && !req->rq_reply_unlink);
if (req->rq_reply_truncate) {
if (ptlrpc_no_resend(req)) {
* will roundup it */
req->rq_replen = req->rq_nob_received;
req->rq_nob_received = 0;
- req->rq_resend = 1;
+ spin_lock(&req->rq_lock);
+ req->rq_resend = 1;
+ spin_unlock(&req->rq_lock);
RETURN(0);
}
time_t now = cfs_time_current_sec();
DEBUG_REQ(D_RPCTRACE, req, "Resending request on EINPROGRESS");
+ spin_lock(&req->rq_lock);
req->rq_resend = 1;
+ spin_unlock(&req->rq_lock);
req->rq_nr_resend++;
/* allocate new xid to avoid reply reconstruction */
/** version recovery */
ptlrpc_save_versions(req);
ptlrpc_retain_replayable_request(req, imp);
- } else if (req->rq_commit_cb != NULL) {
+ } else if (req->rq_commit_cb != NULL &&
+ list_empty(&req->rq_replay_list)) {
+ /* NB: don't call rq_commit_cb if it's already on
+ * rq_replay_list, ptlrpc_free_committed() will call
+ * it later, see LU-3618 for details */
spin_unlock(&imp->imp_lock);
req->rq_commit_cb(req);
spin_lock(&imp->imp_lock);
ptlrpc_free_committed(imp);
- if (!cfs_list_empty(&imp->imp_replay_list)) {
+ if (!list_empty(&imp->imp_replay_list)) {
struct ptlrpc_request *last;
- last = cfs_list_entry(imp->imp_replay_list.prev,
- struct ptlrpc_request,
- rq_replay_list);
+ last = list_entry(imp->imp_replay_list.prev,
+ struct ptlrpc_request,
+ rq_replay_list);
/*
* Requests with rq_replay stay on the list even if no
* commit is expected.
"(%s != %s)", lustre_msg_get_status(req->rq_reqmsg),
ptlrpc_import_state_name(req->rq_send_state),
ptlrpc_import_state_name(imp->imp_state));
- LASSERT(cfs_list_empty(&req->rq_list));
- cfs_list_add_tail(&req->rq_list, &imp->imp_delayed_list);
- cfs_atomic_inc(&req->rq_import->imp_inflight);
+ LASSERT(list_empty(&req->rq_list));
+ list_add_tail(&req->rq_list, &imp->imp_delayed_list);
+ atomic_inc(&req->rq_import->imp_inflight);
spin_unlock(&imp->imp_lock);
RETURN(0);
}
RETURN(rc);
}
- LASSERT(cfs_list_empty(&req->rq_list));
- cfs_list_add_tail(&req->rq_list, &imp->imp_sending_list);
- cfs_atomic_inc(&req->rq_import->imp_inflight);
+ LASSERT(list_empty(&req->rq_list));
+ list_add_tail(&req->rq_list, &imp->imp_sending_list);
+ atomic_inc(&req->rq_import->imp_inflight);
spin_unlock(&imp->imp_lock);
lustre_msg_set_status(req->rq_reqmsg, current_pid());
req->rq_status = rc;
RETURN(1);
} else {
- req->rq_wait_ctx = 1;
+ spin_lock(&req->rq_lock);
+ req->rq_wait_ctx = 1;
+ spin_unlock(&req->rq_lock);
RETURN(0);
}
}
rc = ptl_send_rpc(req, 0);
if (rc) {
DEBUG_REQ(D_HA, req, "send failed (%d); expect timeout", rc);
- req->rq_net_err = 1;
+ spin_lock(&req->rq_lock);
+ req->rq_net_err = 1;
+ spin_unlock(&req->rq_lock);
RETURN(rc);
}
RETURN(0);
LASSERT(set->set_producer != NULL);
- remaining = cfs_atomic_read(&set->set_remaining);
+ remaining = atomic_read(&set->set_remaining);
/* populate the ->set_requests list with requests until we
* reach the maximum number of RPCs in flight for this set */
- while (cfs_atomic_read(&set->set_remaining) < set->set_max_inflight) {
+ while (atomic_read(&set->set_remaining) < set->set_max_inflight) {
rc = set->set_producer(set, set->set_producer_arg);
if (rc == -ENOENT) {
/* no more RPC to produce */
}
}
- RETURN((cfs_atomic_read(&set->set_remaining) - remaining));
+ RETURN((atomic_read(&set->set_remaining) - remaining));
}
/**
* and no more replies are expected.
* (it is possible to get less replies than requests sent e.g. due to timed out
* requests or requests that we had trouble to send out)
+ *
+ * NOTE: This function contains a potential schedule point (cond_resched()).
*/
int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
{
- cfs_list_t *tmp, *next;
- int force_timer_recalc = 0;
- ENTRY;
+ struct list_head *tmp, *next;
+ struct list_head comp_reqs;
+ int force_timer_recalc = 0;
+ ENTRY;
- if (cfs_atomic_read(&set->set_remaining) == 0)
- RETURN(1);
+ if (atomic_read(&set->set_remaining) == 0)
+ RETURN(1);
- cfs_list_for_each_safe(tmp, next, &set->set_requests) {
- struct ptlrpc_request *req =
- cfs_list_entry(tmp, struct ptlrpc_request,
- rq_set_chain);
- struct obd_import *imp = req->rq_import;
- int unregistered = 0;
- int rc = 0;
+ INIT_LIST_HEAD(&comp_reqs);
+ list_for_each_safe(tmp, next, &set->set_requests) {
+ struct ptlrpc_request *req =
+ list_entry(tmp, struct ptlrpc_request,
+ rq_set_chain);
+ struct obd_import *imp = req->rq_import;
+ int unregistered = 0;
+ int rc = 0;
+
+ /* This schedule point is mainly for the ptlrpcd caller of this
+ * function. Most ptlrpc sets are not long-lived and unbounded
+ * in length, but at the least the set used by the ptlrpcd is.
+ * Since the processing time is unbounded, we need to insert an
+ * explicit schedule point to make the thread well-behaved.
+ */
+ cond_resched();
if (req->rq_phase == RQ_PHASE_NEW &&
ptlrpc_send_new_req(req)) {
ptlrpc_rqphase_move(req, req->rq_next_phase);
}
- if (req->rq_phase == RQ_PHASE_COMPLETE)
+ if (req->rq_phase == RQ_PHASE_COMPLETE) {
+ list_move_tail(&req->rq_set_chain, &comp_reqs);
continue;
+ }
if (req->rq_phase == RQ_PHASE_INTERPRET)
GOTO(interpret, req->rq_status);
req->rq_waiting || req->rq_wait_ctx) {
int status;
- if (!ptlrpc_unregister_reply(req, 1))
- continue;
+ if (!ptlrpc_unregister_reply(req, 1)) {
+ ptlrpc_unregister_bulk(req, 1);
+ continue;
+ }
spin_lock(&imp->imp_lock);
if (ptlrpc_import_delay_req(imp, req, &status)){
/* put on delay list - only if we wait
* recovery finished - before send */
- cfs_list_del_init(&req->rq_list);
- cfs_list_add_tail(&req->rq_list,
+ list_del_init(&req->rq_list);
+ list_add_tail(&req->rq_list,
&imp->
imp_delayed_list);
spin_unlock(&imp->imp_lock);
GOTO(interpret, req->rq_status);
}
- cfs_list_del_init(&req->rq_list);
- cfs_list_add_tail(&req->rq_list,
+ list_del_init(&req->rq_list);
+ list_add_tail(&req->rq_list,
&imp->imp_sending_list);
spin_unlock(&imp->imp_lock);
ptlrpc_req_interpret(env, req, req->rq_status);
- ptlrpc_rqphase_move(req, RQ_PHASE_COMPLETE);
+ if (ptlrpcd_check_work(req)) {
+ atomic_dec(&set->set_remaining);
+ continue;
+ }
+ ptlrpc_rqphase_move(req, RQ_PHASE_COMPLETE);
CDEBUG(req->rq_reqmsg != NULL ? D_RPCTRACE : 0,
"Completed RPC pname:cluuid:pid:xid:nid:"
* may happen in the case of marking it erroneous for the case
* ptlrpc_import_delay_req(req, status) find it impossible to
* allow sending this rpc and returns *status != 0. */
- if (!cfs_list_empty(&req->rq_list)) {
- cfs_list_del_init(&req->rq_list);
- cfs_atomic_dec(&imp->imp_inflight);
+ if (!list_empty(&req->rq_list)) {
+ list_del_init(&req->rq_list);
+ atomic_dec(&imp->imp_inflight);
}
spin_unlock(&imp->imp_lock);
- cfs_atomic_dec(&set->set_remaining);
+ atomic_dec(&set->set_remaining);
wake_up_all(&imp->imp_recovery_waitq);
if (set->set_producer) {
/* free the request that has just been completed
* in order not to pollute set->set_requests */
- cfs_list_del_init(&req->rq_set_chain);
+ list_del_init(&req->rq_set_chain);
spin_lock(&req->rq_lock);
req->rq_set = NULL;
req->rq_invalid_rqset = 0;
if (req->rq_status != 0)
set->set_rc = req->rq_status;
ptlrpc_req_finished(req);
+ } else {
+ list_move_tail(&req->rq_set_chain, &comp_reqs);
}
- }
+ }
+
+ /* move completed request at the head of list so it's easier for
+ * caller to find them */
+ list_splice(&comp_reqs, &set->set_requests);
- /* If we hit an error, we want to recover promptly. */
- RETURN(cfs_atomic_read(&set->set_remaining) == 0 || force_timer_recalc);
+ /* If we hit an error, we want to recover promptly. */
+ RETURN(atomic_read(&set->set_remaining) == 0 || force_timer_recalc);
}
EXPORT_SYMBOL(ptlrpc_check_set);
RETURN(1);
}
- cfs_atomic_inc(&imp->imp_timeouts);
+ atomic_inc(&imp->imp_timeouts);
/* The DLM server doesn't want recovery run on its imports. */
if (imp->imp_dlm_fake)
*/
int ptlrpc_expired_set(void *data)
{
- struct ptlrpc_request_set *set = data;
- cfs_list_t *tmp;
- time_t now = cfs_time_current_sec();
- ENTRY;
+ struct ptlrpc_request_set *set = data;
+ struct list_head *tmp;
+ time_t now = cfs_time_current_sec();
+ ENTRY;
- LASSERT(set != NULL);
+ LASSERT(set != NULL);
- /*
- * A timeout expired. See which reqs it applies to...
- */
- cfs_list_for_each (tmp, &set->set_requests) {
- struct ptlrpc_request *req =
- cfs_list_entry(tmp, struct ptlrpc_request,
- rq_set_chain);
+ /*
+ * A timeout expired. See which reqs it applies to...
+ */
+ list_for_each(tmp, &set->set_requests) {
+ struct ptlrpc_request *req =
+ list_entry(tmp, struct ptlrpc_request,
+ rq_set_chain);
/* don't expire request waiting for context */
if (req->rq_wait_ctx)
*/
void ptlrpc_interrupted_set(void *data)
{
- struct ptlrpc_request_set *set = data;
- cfs_list_t *tmp;
+ struct ptlrpc_request_set *set = data;
+ struct list_head *tmp;
- LASSERT(set != NULL);
- CDEBUG(D_RPCTRACE, "INTERRUPTED SET %p\n", set);
+ LASSERT(set != NULL);
+ CDEBUG(D_RPCTRACE, "INTERRUPTED SET %p\n", set);
- cfs_list_for_each(tmp, &set->set_requests) {
- struct ptlrpc_request *req =
- cfs_list_entry(tmp, struct ptlrpc_request,
- rq_set_chain);
+ list_for_each(tmp, &set->set_requests) {
+ struct ptlrpc_request *req =
+ list_entry(tmp, struct ptlrpc_request, rq_set_chain);
- if (req->rq_phase != RQ_PHASE_RPC &&
- req->rq_phase != RQ_PHASE_UNREGISTERING)
- continue;
+ if (req->rq_phase != RQ_PHASE_RPC &&
+ req->rq_phase != RQ_PHASE_UNREGISTERING)
+ continue;
- ptlrpc_mark_interrupted(req);
- }
+ ptlrpc_mark_interrupted(req);
+ }
}
EXPORT_SYMBOL(ptlrpc_interrupted_set);
*/
int ptlrpc_set_next_timeout(struct ptlrpc_request_set *set)
{
- cfs_list_t *tmp;
- time_t now = cfs_time_current_sec();
- int timeout = 0;
- struct ptlrpc_request *req;
- int deadline;
- ENTRY;
+ struct list_head *tmp;
+ time_t now = cfs_time_current_sec();
+ int timeout = 0;
+ struct ptlrpc_request *req;
+ int deadline;
+ ENTRY;
- cfs_list_for_each(tmp, &set->set_requests) {
- req = cfs_list_entry(tmp, struct ptlrpc_request, rq_set_chain);
+ list_for_each(tmp, &set->set_requests) {
+ req = list_entry(tmp, struct ptlrpc_request, rq_set_chain);
/*
* Request in-flight?
*/
int ptlrpc_set_wait(struct ptlrpc_request_set *set)
{
- cfs_list_t *tmp;
+ struct list_head *tmp;
struct ptlrpc_request *req;
struct l_wait_info lwi;
int rc, timeout;
if (set->set_producer)
(void)ptlrpc_set_producer(set);
else
- cfs_list_for_each(tmp, &set->set_requests) {
- req = cfs_list_entry(tmp, struct ptlrpc_request,
- rq_set_chain);
+ list_for_each(tmp, &set->set_requests) {
+ req = list_entry(tmp, struct ptlrpc_request,
+ rq_set_chain);
if (req->rq_phase == RQ_PHASE_NEW)
(void)ptlrpc_send_new_req(req);
}
- if (cfs_list_empty(&set->set_requests))
+ if (list_empty(&set->set_requests))
RETURN(0);
do {
* EINTR.
* I don't really care if we go once more round the loop in
* the error cases -eeb. */
- if (rc == 0 && cfs_atomic_read(&set->set_remaining) == 0) {
- cfs_list_for_each(tmp, &set->set_requests) {
- req = cfs_list_entry(tmp, struct ptlrpc_request,
- rq_set_chain);
+ if (rc == 0 && atomic_read(&set->set_remaining) == 0) {
+ list_for_each(tmp, &set->set_requests) {
+ req = list_entry(tmp, struct ptlrpc_request,
+ rq_set_chain);
spin_lock(&req->rq_lock);
req->rq_invalid_rqset = 1;
spin_unlock(&req->rq_lock);
- }
- }
- } while (rc != 0 || cfs_atomic_read(&set->set_remaining) != 0);
+ }
+ }
+ } while (rc != 0 || atomic_read(&set->set_remaining) != 0);
- LASSERT(cfs_atomic_read(&set->set_remaining) == 0);
+ LASSERT(atomic_read(&set->set_remaining) == 0);
rc = set->set_rc; /* rq_status of already freed requests if any */
- cfs_list_for_each(tmp, &set->set_requests) {
- req = cfs_list_entry(tmp, struct ptlrpc_request, rq_set_chain);
+ list_for_each(tmp, &set->set_requests) {
+ req = list_entry(tmp, struct ptlrpc_request, rq_set_chain);
LASSERT(req->rq_phase == RQ_PHASE_COMPLETE);
if (req->rq_status != 0)
struct ptlrpc_set_cbdata *cbdata, *n;
int err;
- cfs_list_for_each_entry_safe(cbdata, n,
+ list_for_each_entry_safe(cbdata, n,
&set->set_cblist, psc_item) {
- cfs_list_del_init(&cbdata->psc_item);
+ list_del_init(&cbdata->psc_item);
err = cbdata->psc_interpret(set, cbdata->psc_data, rc);
if (err && !rc)
rc = err;
LASSERTF(!request->rq_receiving_reply, "req %p\n", request);
LASSERTF(request->rq_rqbd == NULL, "req %p\n",request);/* client-side */
- LASSERTF(cfs_list_empty(&request->rq_list), "req %p\n", request);
- LASSERTF(cfs_list_empty(&request->rq_set_chain), "req %p\n", request);
- LASSERTF(cfs_list_empty(&request->rq_exp_list), "req %p\n", request);
+ LASSERTF(list_empty(&request->rq_list), "req %p\n", request);
+ LASSERTF(list_empty(&request->rq_set_chain), "req %p\n", request);
+ LASSERTF(list_empty(&request->rq_exp_list), "req %p\n", request);
LASSERTF(!request->rq_replay, "req %p\n", request);
req_capsule_fini(&request->rq_pill);
if (request->rq_import != NULL) {
if (!locked)
spin_lock(&request->rq_import->imp_lock);
- cfs_list_del_init(&request->rq_replay_list);
+ list_del_init(&request->rq_replay_list);
if (!locked)
spin_unlock(&request->rq_import->imp_lock);
}
- LASSERTF(cfs_list_empty(&request->rq_replay_list), "req %p\n", request);
+ LASSERTF(list_empty(&request->rq_replay_list), "req %p\n", request);
- if (cfs_atomic_read(&request->rq_refcount) != 0) {
- DEBUG_REQ(D_ERROR, request,
- "freeing request with nonzero refcount");
- LBUG();
- }
+ if (atomic_read(&request->rq_refcount) != 0) {
+ DEBUG_REQ(D_ERROR, request,
+ "freeing request with nonzero refcount");
+ LBUG();
+ }
if (request->rq_repbuf != NULL)
sptlrpc_cli_free_repbuf(request);
*/
void ptlrpc_req_finished_with_imp_lock(struct ptlrpc_request *request)
{
- LASSERT(spin_is_locked(&request->rq_import->imp_lock));
+ assert_spin_locked(&request->rq_import->imp_lock);
(void)__ptlrpc_req_finished(request, 1);
}
EXPORT_SYMBOL(ptlrpc_req_finished_with_imp_lock);
}
DEBUG_REQ(D_INFO, request, "refcount now %u",
- cfs_atomic_read(&request->rq_refcount) - 1);
+ atomic_read(&request->rq_refcount) - 1);
- if (cfs_atomic_dec_and_test(&request->rq_refcount)) {
+ if (atomic_dec_and_test(&request->rq_refcount)) {
__ptlrpc_free_req(request, locked);
RETURN(1);
}
* unlinked before returning a req to the pool.
*/
for (;;) {
-#ifdef __KERNEL__
/* The wq argument is ignored by user-space wait_event macros */
wait_queue_head_t *wq = (request->rq_set != NULL) ?
&request->rq_set->set_waitq :
&request->rq_reply_waitq;
-#endif
/* Network access will complete in finite time but the HUGE
* timeout lets us CWARN for visibility of sluggish NALs */
lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(LONG_UNLINK),
LASSERT(rc == -ETIMEDOUT);
DEBUG_REQ(D_WARNING, request, "Unexpectedly long timeout "
- "rvcng=%d unlnk=%d", request->rq_receiving_reply,
- request->rq_must_unlink);
+ "rvcng=%d unlnk=%d/%d", request->rq_receiving_reply,
+ request->rq_req_unlink, request->rq_reply_unlink);
}
RETURN(0);
}
if (req->rq_commit_cb != NULL)
req->rq_commit_cb(req);
- cfs_list_del_init(&req->rq_replay_list);
+ list_del_init(&req->rq_replay_list);
__ptlrpc_req_finished(req, 1);
}
struct obd_import *imp = req->rq_import;
spin_lock(&imp->imp_lock);
- if (cfs_list_empty(&req->rq_replay_list)) {
+ if (list_empty(&req->rq_replay_list)) {
spin_unlock(&imp->imp_lock);
return;
}
ENTRY;
LASSERT(imp != NULL);
- LASSERT(spin_is_locked(&imp->imp_lock));
-
+ assert_spin_locked(&imp->imp_lock);
if (imp->imp_peer_committed_transno == imp->imp_last_transno_checked &&
imp->imp_generation == imp->imp_last_generation_checked) {
CDEBUG(D_INFO, "%s: skip recheck: last_committed "LPU64"\n",
imp->imp_obd->obd_name, imp->imp_peer_committed_transno);
- EXIT;
- return;
+ RETURN_EXIT;
}
CDEBUG(D_RPCTRACE, "%s: committing for last_committed "LPU64" gen %d\n",
imp->imp_obd->obd_name, imp->imp_peer_committed_transno,
imp->imp_last_transno_checked = imp->imp_peer_committed_transno;
imp->imp_last_generation_checked = imp->imp_generation;
- cfs_list_for_each_entry_safe(req, saved, &imp->imp_replay_list,
+ list_for_each_entry_safe(req, saved, &imp->imp_replay_list,
rq_replay_list) {
/* XXX ok to remove when 1357 resolved - rread 05/29/03 */
LASSERT(req != last_req);
if (req->rq_replay) {
DEBUG_REQ(D_RPCTRACE, req, "keeping (FL_REPLAY)");
- cfs_list_move_tail(&req->rq_replay_list,
+ list_move_tail(&req->rq_replay_list,
&imp->imp_committed_list);
continue;
}
if (skip_committed_list)
GOTO(out, 0);
- cfs_list_for_each_entry_safe(req, saved, &imp->imp_committed_list,
+ list_for_each_entry_safe(req, saved, &imp->imp_committed_list,
rq_replay_list) {
LASSERT(req->rq_transno != 0);
if (req->rq_import_generation < imp->imp_generation) {
}
out:
EXIT;
- return;
}
void ptlrpc_cleanup_client(struct obd_import *imp)
{
ENTRY;
EXIT;
- return;
}
EXPORT_SYMBOL(ptlrpc_cleanup_client);
void ptlrpc_resend_req(struct ptlrpc_request *req)
{
DEBUG_REQ(D_HA, req, "going to resend");
+ spin_lock(&req->rq_lock);
+
+ /* Request got reply but linked to the import list still.
+ Let ptlrpc_check_set() to process it. */
+ if (ptlrpc_client_replied(req)) {
+ spin_unlock(&req->rq_lock);
+ DEBUG_REQ(D_HA, req, "it has reply, so skip it");
+ return;
+ }
+
lustre_msg_set_handle(req->rq_reqmsg, &(struct lustre_handle){ 0 });
req->rq_status = -EAGAIN;
- spin_lock(&req->rq_lock);
req->rq_resend = 1;
req->rq_net_err = 0;
req->rq_timedout = 0;
*/
struct ptlrpc_request *ptlrpc_request_addref(struct ptlrpc_request *req)
{
- ENTRY;
- cfs_atomic_inc(&req->rq_refcount);
- RETURN(req);
+ ENTRY;
+ atomic_inc(&req->rq_refcount);
+ RETURN(req);
}
EXPORT_SYMBOL(ptlrpc_request_addref);
void ptlrpc_retain_replayable_request(struct ptlrpc_request *req,
struct obd_import *imp)
{
- cfs_list_t *tmp;
+ struct list_head *tmp;
- LASSERT(spin_is_locked(&imp->imp_lock));
+ assert_spin_locked(&imp->imp_lock);
if (req->rq_transno == 0) {
DEBUG_REQ(D_EMERG, req, "saving request with zero transno");
as resent replayed requests. */
lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
- /* don't re-add requests that have been replayed */
- if (!cfs_list_empty(&req->rq_replay_list))
- return;
+ /* don't re-add requests that have been replayed */
+ if (!list_empty(&req->rq_replay_list))
+ return;
- lustre_msg_add_flags(req->rq_reqmsg, MSG_REPLAY);
+ lustre_msg_add_flags(req->rq_reqmsg, MSG_REPLAY);
- LASSERT(imp->imp_replayable);
- /* Balanced in ptlrpc_free_committed, usually. */
- ptlrpc_request_addref(req);
- cfs_list_for_each_prev(tmp, &imp->imp_replay_list) {
- struct ptlrpc_request *iter =
- cfs_list_entry(tmp, struct ptlrpc_request,
- rq_replay_list);
+ LASSERT(imp->imp_replayable);
+ /* Balanced in ptlrpc_free_committed, usually. */
+ ptlrpc_request_addref(req);
+ list_for_each_prev(tmp, &imp->imp_replay_list) {
+ struct ptlrpc_request *iter = list_entry(tmp,
+ struct ptlrpc_request,
+ rq_replay_list);
/* We may have duplicate transnos if we create and then
* open a file, or for closes retained if to match creating
continue;
}
- cfs_list_add(&req->rq_replay_list, &iter->rq_replay_list);
- return;
- }
+ list_add(&req->rq_replay_list, &iter->rq_replay_list);
+ return;
+ }
- cfs_list_add(&req->rq_replay_list, &imp->imp_replay_list);
+ list_add(&req->rq_replay_list, &imp->imp_replay_list);
}
EXPORT_SYMBOL(ptlrpc_retain_replayable_request);
LASSERT(req->rq_set == NULL);
LASSERT(!req->rq_receiving_reply);
- set = ptlrpc_prep_set();
- if (set == NULL) {
- CERROR("Unable to allocate ptlrpc set.");
- RETURN(-ENOMEM);
- }
+ set = ptlrpc_prep_set();
+ if (set == NULL) {
+ CERROR("cannot allocate ptlrpc set: rc = %d\n", -ENOMEM);
+ RETURN(-ENOMEM);
+ }
/* for distributed debugging */
lustre_msg_set_status(req->rq_reqmsg, current_pid());
* In case of error restart replay process.
*/
static int ptlrpc_replay_interpret(const struct lu_env *env,
- struct ptlrpc_request *req,
- void * data, int rc)
+ struct ptlrpc_request *req,
+ void * data, int rc)
{
- struct ptlrpc_replay_async_args *aa = data;
- struct obd_import *imp = req->rq_import;
+ struct ptlrpc_replay_async_args *aa = data;
+ struct obd_import *imp = req->rq_import;
- ENTRY;
- cfs_atomic_dec(&imp->imp_replay_inflight);
+ ENTRY;
+ atomic_dec(&imp->imp_replay_inflight);
if (!ptlrpc_client_replied(req)) {
CERROR("request replay timed out, restarting recovery\n");
ptlrpc_at_get_net_latency(req));
DEBUG_REQ(D_HA, req, "REPLAY");
- cfs_atomic_inc(&req->rq_import->imp_replay_inflight);
- ptlrpc_request_addref(req); /* ptlrpcd needs a ref */
+ atomic_inc(&req->rq_import->imp_replay_inflight);
+ ptlrpc_request_addref(req); /* ptlrpcd needs a ref */
- ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
- RETURN(0);
+ ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
+ RETURN(0);
}
EXPORT_SYMBOL(ptlrpc_replay_req);
*/
void ptlrpc_abort_inflight(struct obd_import *imp)
{
- cfs_list_t *tmp, *n;
- ENTRY;
+ struct list_head *tmp, *n;
+ ENTRY;
- /* Make sure that no new requests get processed for this import.
- * ptlrpc_{queue,set}_wait must (and does) hold imp_lock while testing
- * this flag and then putting requests on sending_list or delayed_list.
- */
+ /* Make sure that no new requests get processed for this import.
+ * ptlrpc_{queue,set}_wait must (and does) hold imp_lock while testing
+ * this flag and then putting requests on sending_list or delayed_list.
+ */
spin_lock(&imp->imp_lock);
- /* XXX locking? Maybe we should remove each request with the list
- * locked? Also, how do we know if the requests on the list are
- * being freed at this time?
- */
- cfs_list_for_each_safe(tmp, n, &imp->imp_sending_list) {
- struct ptlrpc_request *req =
- cfs_list_entry(tmp, struct ptlrpc_request, rq_list);
+ /* XXX locking? Maybe we should remove each request with the list
+ * locked? Also, how do we know if the requests on the list are
+ * being freed at this time?
+ */
+ list_for_each_safe(tmp, n, &imp->imp_sending_list) {
+ struct ptlrpc_request *req = list_entry(tmp,
+ struct ptlrpc_request,
+ rq_list);
DEBUG_REQ(D_RPCTRACE, req, "inflight");
spin_unlock(&req->rq_lock);
}
- cfs_list_for_each_safe(tmp, n, &imp->imp_delayed_list) {
+ list_for_each_safe(tmp, n, &imp->imp_delayed_list) {
struct ptlrpc_request *req =
- cfs_list_entry(tmp, struct ptlrpc_request, rq_list);
+ list_entry(tmp, struct ptlrpc_request, rq_list);
DEBUG_REQ(D_RPCTRACE, req, "aborting waiting req");
*/
void ptlrpc_abort_set(struct ptlrpc_request_set *set)
{
- cfs_list_t *tmp, *pos;
+ struct list_head *tmp, *pos;
- LASSERT(set != NULL);
+ LASSERT(set != NULL);
- cfs_list_for_each_safe(pos, tmp, &set->set_requests) {
- struct ptlrpc_request *req =
- cfs_list_entry(pos, struct ptlrpc_request,
- rq_set_chain);
+ list_for_each_safe(pos, tmp, &set->set_requests) {
+ struct ptlrpc_request *req =
+ list_entry(pos, struct ptlrpc_request,
+ rq_set_chain);
spin_lock(&req->rq_lock);
if (req->rq_phase != RQ_PHASE_RPC) {
* have delay before it really runs by ptlrpcd thread.
*/
struct ptlrpc_work_async_args {
- __u64 magic;
- int (*cb)(const struct lu_env *, void *);
- void *cbdata;
+ int (*cb)(const struct lu_env *, void *);
+ void *cbdata;
};
-#define PTLRPC_WORK_MAGIC 0x6655436b676f4f44ULL /* magic code */
+static void ptlrpcd_add_work_req(struct ptlrpc_request *req)
+{
+ /* re-initialize the req */
+ req->rq_timeout = obd_timeout;
+ req->rq_sent = cfs_time_current_sec();
+ req->rq_deadline = req->rq_sent + req->rq_timeout;
+ req->rq_reply_deadline = req->rq_deadline;
+ req->rq_phase = RQ_PHASE_INTERPRET;
+ req->rq_next_phase = RQ_PHASE_COMPLETE;
+ req->rq_xid = ptlrpc_next_xid();
+ req->rq_import_generation = req->rq_import->imp_generation;
+
+ ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
+}
static int work_interpreter(const struct lu_env *env,
- struct ptlrpc_request *req, void *data, int rc)
+ struct ptlrpc_request *req, void *data, int rc)
{
- struct ptlrpc_work_async_args *arg = data;
+ struct ptlrpc_work_async_args *arg = data;
+
+ LASSERT(ptlrpcd_check_work(req));
+ LASSERT(arg->cb != NULL);
+
+ rc = arg->cb(env, arg->cbdata);
+
+ list_del_init(&req->rq_set_chain);
+ req->rq_set = NULL;
+
+ if (atomic_dec_return(&req->rq_refcount) > 1) {
+ atomic_set(&req->rq_refcount, 2);
+ ptlrpcd_add_work_req(req);
+ }
+ return rc;
+}
- LASSERT(arg->magic == PTLRPC_WORK_MAGIC);
- LASSERT(arg->cb != NULL);
+static int worker_format;
- return arg->cb(env, arg->cbdata);
+static int ptlrpcd_check_work(struct ptlrpc_request *req)
+{
+ return req->rq_pill.rc_fmt == (void *)&worker_format;
}
/**
if (cb == NULL)
RETURN(ERR_PTR(-EINVAL));
- /* copy some code from deprecated fakereq. */
- req = ptlrpc_request_cache_alloc(__GFP_IO);
- if (req == NULL) {
- CERROR("ptlrpc: run out of memory!\n");
- RETURN(ERR_PTR(-ENOMEM));
- }
+ /* copy some code from deprecated fakereq. */
+ req = ptlrpc_request_cache_alloc(GFP_NOFS);
+ if (req == NULL) {
+ CERROR("ptlrpc: run out of memory!\n");
+ RETURN(ERR_PTR(-ENOMEM));
+ }
- req->rq_send_state = LUSTRE_IMP_FULL;
- req->rq_type = PTL_RPC_MSG_REQUEST;
- req->rq_import = class_import_get(imp);
- req->rq_export = NULL;
- req->rq_interpret_reply = work_interpreter;
- /* don't want reply */
- req->rq_receiving_reply = 0;
- req->rq_must_unlink = 0;
- req->rq_no_delay = req->rq_no_resend = 1;
+ req->rq_send_state = LUSTRE_IMP_FULL;
+ req->rq_type = PTL_RPC_MSG_REQUEST;
+ req->rq_import = class_import_get(imp);
+ req->rq_export = NULL;
+ req->rq_interpret_reply = work_interpreter;
+ /* don't want reply */
+ req->rq_receiving_reply = 0;
+ req->rq_req_unlink = req->rq_reply_unlink = 0;
+ req->rq_no_delay = req->rq_no_resend = 1;
+ req->rq_pill.rc_fmt = (void *)&worker_format;
spin_lock_init(&req->rq_lock);
- CFS_INIT_LIST_HEAD(&req->rq_list);
- CFS_INIT_LIST_HEAD(&req->rq_replay_list);
- CFS_INIT_LIST_HEAD(&req->rq_set_chain);
- CFS_INIT_LIST_HEAD(&req->rq_history_list);
- CFS_INIT_LIST_HEAD(&req->rq_exp_list);
+ INIT_LIST_HEAD(&req->rq_list);
+ INIT_LIST_HEAD(&req->rq_replay_list);
+ INIT_LIST_HEAD(&req->rq_set_chain);
+ INIT_LIST_HEAD(&req->rq_history_list);
+ INIT_LIST_HEAD(&req->rq_exp_list);
init_waitqueue_head(&req->rq_reply_waitq);
init_waitqueue_head(&req->rq_set_waitq);
- cfs_atomic_set(&req->rq_refcount, 1);
+ atomic_set(&req->rq_refcount, 1);
CLASSERT (sizeof(*args) <= sizeof(req->rq_async_args));
args = ptlrpc_req_async_args(req);
- args->magic = PTLRPC_WORK_MAGIC;
args->cb = cb;
args->cbdata = cbdata;
int ptlrpcd_queue_work(void *handler)
{
- struct ptlrpc_request *req = handler;
+ struct ptlrpc_request *req = handler;
/*
* Check if the req is already being queued.
* for this purpose. This is okay because the caller should use this
* req as opaque data. - Jinshan
*/
- LASSERT(cfs_atomic_read(&req->rq_refcount) > 0);
- if (cfs_atomic_read(&req->rq_refcount) > 1)
- return -EBUSY;
-
- if (cfs_atomic_inc_return(&req->rq_refcount) > 2) { /* race */
- cfs_atomic_dec(&req->rq_refcount);
- return -EBUSY;
- }
-
- /* re-initialize the req */
- req->rq_timeout = obd_timeout;
- req->rq_sent = cfs_time_current_sec();
- req->rq_deadline = req->rq_sent + req->rq_timeout;
- req->rq_reply_deadline = req->rq_deadline;
- req->rq_phase = RQ_PHASE_INTERPRET;
- req->rq_next_phase = RQ_PHASE_COMPLETE;
- req->rq_xid = ptlrpc_next_xid();
- req->rq_import_generation = req->rq_import->imp_generation;
-
- ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
- return 0;
+ LASSERT(atomic_read(&req->rq_refcount) > 0);
+ if (atomic_inc_return(&req->rq_refcount) == 2)
+ ptlrpcd_add_work_req(req);
+ return 0;
}
EXPORT_SYMBOL(ptlrpcd_queue_work);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff