#include "ptlrpc_internal.h"
+const struct ptlrpc_bulk_frag_ops ptlrpc_bulk_kiov_pin_ops = {
+ .add_kiov_frag = ptlrpc_prep_bulk_page_pin,
+ .release_frags = ptlrpc_release_bulk_page_pin,
+};
+EXPORT_SYMBOL(ptlrpc_bulk_kiov_pin_ops);
+
+const struct ptlrpc_bulk_frag_ops ptlrpc_bulk_kiov_nopin_ops = {
+ .add_kiov_frag = ptlrpc_prep_bulk_page_nopin,
+ .release_frags = ptlrpc_release_bulk_noop,
+};
+EXPORT_SYMBOL(ptlrpc_bulk_kiov_nopin_ops);
+
+const struct ptlrpc_bulk_frag_ops ptlrpc_bulk_kvec_ops = {
+ .add_iov_frag = ptlrpc_prep_bulk_frag,
+};
+EXPORT_SYMBOL(ptlrpc_bulk_kvec_ops);
+
static int ptlrpc_send_new_req(struct ptlrpc_request *req);
static int ptlrpcd_check_work(struct ptlrpc_request *req);
static int ptlrpc_unregister_reply(struct ptlrpc_request *request, int async);
* Allocate and initialize new bulk descriptor on the sender.
* Returns pointer to the descriptor or NULL on error.
*/
-struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned npages, unsigned max_brw,
- unsigned type, unsigned portal)
+struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned nfrags, unsigned max_brw,
+ enum ptlrpc_bulk_op_type type,
+ unsigned portal,
+ const struct ptlrpc_bulk_frag_ops *ops)
{
struct ptlrpc_bulk_desc *desc;
int i;
- OBD_ALLOC(desc, offsetof(struct ptlrpc_bulk_desc, bd_iov[npages]));
+ /* ensure that only one of KIOV or IOVEC is set but not both */
+ LASSERT((ptlrpc_is_bulk_desc_kiov(type) &&
+ ops->add_kiov_frag != NULL) ||
+ (ptlrpc_is_bulk_desc_kvec(type) &&
+ ops->add_iov_frag != NULL));
+
+ if (type & PTLRPC_BULK_BUF_KIOV) {
+ OBD_ALLOC(desc,
+ offsetof(struct ptlrpc_bulk_desc,
+ bd_u.bd_kiov.bd_vec[nfrags]));
+ } else {
+ OBD_ALLOC(desc,
+ offsetof(struct ptlrpc_bulk_desc,
+ bd_u.bd_kvec.bd_kvec[nfrags]));
+ }
+
if (!desc)
return NULL;
spin_lock_init(&desc->bd_lock);
init_waitqueue_head(&desc->bd_waitq);
- desc->bd_max_iov = npages;
+ desc->bd_max_iov = nfrags;
desc->bd_iov_count = 0;
desc->bd_portal = portal;
desc->bd_type = type;
desc->bd_md_count = 0;
+ desc->bd_frag_ops = (struct ptlrpc_bulk_frag_ops *) ops;
LASSERT(max_brw > 0);
desc->bd_md_max_brw = min(max_brw, PTLRPC_BULK_OPS_COUNT);
/* PTLRPC_BULK_OPS_COUNT is the compile-time transfer limit for this
/**
* Prepare bulk descriptor for specified outgoing request \a req that
- * can fit \a npages * pages. \a type is bulk type. \a portal is where
+ * can fit \a nfrags * pages. \a type is bulk type. \a portal is where
* the bulk to be sent. Used on client-side.
* Returns pointer to newly allocatrd initialized bulk descriptor or NULL on
* error.
*/
struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_imp(struct ptlrpc_request *req,
- unsigned npages, unsigned max_brw,
- unsigned type, unsigned portal)
+ unsigned nfrags, unsigned max_brw,
+ unsigned int type,
+ unsigned portal,
+ const struct ptlrpc_bulk_frag_ops
+ *ops)
{
struct obd_import *imp = req->rq_import;
struct ptlrpc_bulk_desc *desc;
ENTRY;
- LASSERT(type == BULK_PUT_SINK || type == BULK_GET_SOURCE);
- desc = ptlrpc_new_bulk(npages, max_brw, type, portal);
+ LASSERT(ptlrpc_is_bulk_op_passive(type));
+
+ desc = ptlrpc_new_bulk(nfrags, max_brw, type, portal, ops);
if (desc == NULL)
RETURN(NULL);
}
EXPORT_SYMBOL(ptlrpc_prep_bulk_imp);
-/*
- * Add a page \a page to the bulk descriptor \a desc.
- * Data to transfer in the page starts at offset \a pageoffset and
- * amount of data to transfer from the page is \a len
- */
void __ptlrpc_prep_bulk_page(struct ptlrpc_bulk_desc *desc,
- struct page *page, int pageoffset, int len, int pin)
+ struct page *page, int pageoffset, int len,
+ int pin)
{
+ lnet_kiov_t *kiov;
+
LASSERT(desc->bd_iov_count < desc->bd_max_iov);
LASSERT(page != NULL);
LASSERT(pageoffset >= 0);
LASSERT(len > 0);
LASSERT(pageoffset + len <= PAGE_CACHE_SIZE);
+ LASSERT(ptlrpc_is_bulk_desc_kiov(desc->bd_type));
+
+ kiov = &BD_GET_KIOV(desc, desc->bd_iov_count);
desc->bd_nob += len;
if (pin)
page_cache_get(page);
- ptlrpc_add_bulk_page(desc, page, pageoffset, len);
+ kiov->kiov_page = page;
+ kiov->kiov_offset = pageoffset;
+ kiov->kiov_len = len;
+
+ desc->bd_iov_count++;
}
EXPORT_SYMBOL(__ptlrpc_prep_bulk_page);
-/**
- * Uninitialize and free bulk descriptor \a desc.
- * Works on bulk descriptors both from server and client side.
- */
-void __ptlrpc_free_bulk(struct ptlrpc_bulk_desc *desc, int unpin)
+int ptlrpc_prep_bulk_frag(struct ptlrpc_bulk_desc *desc,
+ void *frag, int len)
+{
+ struct kvec *iovec;
+ ENTRY;
+
+ LASSERT(desc->bd_iov_count < desc->bd_max_iov);
+ LASSERT(frag != NULL);
+ LASSERT(len > 0);
+ LASSERT(ptlrpc_is_bulk_desc_kvec(desc->bd_type));
+
+ iovec = &BD_GET_KVEC(desc, desc->bd_iov_count);
+
+ desc->bd_nob += len;
+
+ iovec->iov_base = frag;
+ iovec->iov_len = len;
+
+ desc->bd_iov_count++;
+
+ RETURN(desc->bd_nob);
+}
+EXPORT_SYMBOL(ptlrpc_prep_bulk_frag);
+
+void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *desc)
{
- int i;
ENTRY;
LASSERT(desc != NULL);
LASSERT(desc->bd_iov_count != LI_POISON); /* not freed already */
LASSERT(desc->bd_md_count == 0); /* network hands off */
LASSERT((desc->bd_export != NULL) ^ (desc->bd_import != NULL));
+ LASSERT(desc->bd_frag_ops != NULL);
- sptlrpc_enc_pool_put_pages(desc);
+ if (ptlrpc_is_bulk_desc_kiov(desc->bd_type))
+ sptlrpc_enc_pool_put_pages(desc);
if (desc->bd_export)
class_export_put(desc->bd_export);
else
class_import_put(desc->bd_import);
- if (unpin) {
- for (i = 0; i < desc->bd_iov_count ; i++)
- page_cache_release(desc->bd_iov[i].kiov_page);
- }
+ if (desc->bd_frag_ops->release_frags != NULL)
+ desc->bd_frag_ops->release_frags(desc);
+
+ if (ptlrpc_is_bulk_desc_kiov(desc->bd_type))
+ OBD_FREE(desc, offsetof(struct ptlrpc_bulk_desc,
+ bd_u.bd_kiov.bd_vec[desc->bd_max_iov]));
+ else
+ OBD_FREE(desc, offsetof(struct ptlrpc_bulk_desc,
+ bd_u.bd_kvec.bd_kvec[desc->
+ bd_max_iov]));
- OBD_FREE(desc, offsetof(struct ptlrpc_bulk_desc,
- bd_iov[desc->bd_max_iov]));
EXIT;
}
-EXPORT_SYMBOL(__ptlrpc_free_bulk);
+EXPORT_SYMBOL(ptlrpc_free_bulk);
/**
* Set server timelimit for this req, i.e. how long are we willing to wait
/**
* Allocates, initializes and adds \a num_rq requests to the pool \a pool
*/
-void ptlrpc_add_rqs_to_pool(struct ptlrpc_request_pool *pool, int num_rq)
+int ptlrpc_add_rqs_to_pool(struct ptlrpc_request_pool *pool, int num_rq)
{
int i;
int size = 1;
spin_unlock(&pool->prp_lock);
req = ptlrpc_request_cache_alloc(GFP_NOFS);
if (!req)
- return;
+ return i;
OBD_ALLOC_LARGE(msg, size);
if (!msg) {
ptlrpc_request_cache_free(req);
- return;
+ return i;
}
req->rq_reqbuf = msg;
req->rq_reqbuf_len = size;
list_add_tail(&req->rq_list, &pool->prp_req_list);
}
spin_unlock(&pool->prp_lock);
- return;
+ return num_rq;
}
EXPORT_SYMBOL(ptlrpc_add_rqs_to_pool);
*/
struct ptlrpc_request_pool *
ptlrpc_init_rq_pool(int num_rq, int msgsize,
- void (*populate_pool)(struct ptlrpc_request_pool *, int))
+ int (*populate_pool)(struct ptlrpc_request_pool *, int))
{
struct ptlrpc_request_pool *pool;
populate_pool(pool, num_rq);
- 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);
ptlrpc_at_set_req_timeout(request);
- request->rq_xid = ptlrpc_next_xid();
lustre_msg_set_opc(request->rq_reqmsg, opcode);
RETURN(0);
{
struct ptlrpc_request *request = NULL;
- if (pool)
- request = ptlrpc_prep_req_from_pool(pool);
+ request = ptlrpc_request_cache_alloc(GFP_NOFS);
- if (!request)
- request = ptlrpc_request_cache_alloc(GFP_NOFS);
+ if (!request && pool)
+ request = ptlrpc_prep_req_from_pool(pool);
if (request) {
ptlrpc_cli_req_init(request);
}
/**
- * Allocate and initialize new request set structure.
+ * Allocate and initialize new request set structure on the current CPT.
* Returns a pointer to the newly allocated set structure or NULL on error.
*/
struct ptlrpc_request_set *ptlrpc_prep_set(void)
{
- struct ptlrpc_request_set *set;
+ struct ptlrpc_request_set *set;
+ int cpt;
ENTRY;
- OBD_ALLOC(set, sizeof *set);
+ cpt = cfs_cpt_current(cfs_cpt_table, 0);
+ OBD_CPT_ALLOC(set, cfs_cpt_table, cpt, sizeof *set);
if (!set)
RETURN(NULL);
atomic_set(&set->set_refcount, 1);
struct obd_device *obd = req->rq_import->imp_obd;
int rc;
struct timeval work_start;
+ __u64 committed;
long timediff;
ENTRY;
RETURN(0);
}
+ do_gettimeofday(&work_start);
+ timediff = cfs_timeval_sub(&work_start, &req->rq_sent_tv, NULL);
+
/*
* NB Until this point, the whole of the incoming message,
* including buflens, status etc is in the sender's byte order.
spin_unlock(&req->rq_lock);
req->rq_nr_resend++;
- /* allocate new xid to avoid reply reconstruction */
- if (!req->rq_bulk) {
- /* new xid is already allocated for bulk in
- * ptlrpc_check_set() */
- req->rq_xid = ptlrpc_next_xid();
- DEBUG_REQ(D_RPCTRACE, req, "Allocating new xid for "
- "resend on EINPROGRESS");
- }
-
/* Readjust the timeout for current conditions */
ptlrpc_at_set_req_timeout(req);
/* delay resend to give a chance to the server to get ready.
RETURN(0);
}
- do_gettimeofday(&work_start);
- timediff = cfs_timeval_sub(&work_start, &req->rq_sent_tv, NULL);
if (obd->obd_svc_stats != NULL) {
lprocfs_counter_add(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR,
timediff);
/*
* Replay-enabled imports return commit-status information.
*/
- if (lustre_msg_get_last_committed(req->rq_repmsg)) {
- imp->imp_peer_committed_transno =
- lustre_msg_get_last_committed(req->rq_repmsg);
- }
+ committed = lustre_msg_get_last_committed(req->rq_repmsg);
+ if (likely(committed > imp->imp_peer_committed_transno))
+ imp->imp_peer_committed_transno = committed;
ptlrpc_free_committed(imp);
static int ptlrpc_send_new_req(struct ptlrpc_request *req)
{
struct obd_import *imp = req->rq_import;
+ struct list_head *tmp;
+ __u64 min_xid = ~0ULL;
int rc;
ENTRY;
LASSERT(req->rq_phase == RQ_PHASE_NEW);
+
+ /* do not try to go further if there is not enough memory in enc_pool */
+ if (req->rq_sent && req->rq_bulk != NULL)
+ if (req->rq_bulk->bd_iov_count > get_free_pages_in_pool() &&
+ pool_is_at_full_capacity())
+ RETURN(-ENOMEM);
+
if (req->rq_sent && (req->rq_sent > cfs_time_current_sec()) &&
(!req->rq_generation_set ||
req->rq_import_generation == imp->imp_generation))
spin_lock(&imp->imp_lock);
+ /* the very first time we assign XID. it's important to assign XID
+ * and put it on the list atomically, so that the lowest assigned
+ * XID is always known. this is vital for multislot last_rcvd */
+ if (req->rq_send_state == LUSTRE_IMP_REPLAY) {
+ LASSERT(req->rq_xid != 0);
+ } else {
+ LASSERT(req->rq_xid == 0);
+ req->rq_xid = ptlrpc_next_xid();
+ }
+
if (!req->rq_generation_set)
req->rq_import_generation = imp->imp_generation;
LASSERT(list_empty(&req->rq_list));
list_add_tail(&req->rq_list, &imp->imp_sending_list);
atomic_inc(&req->rq_import->imp_inflight);
+
+ /* find the lowest unreplied XID */
+ list_for_each(tmp, &imp->imp_delayed_list) {
+ struct ptlrpc_request *r;
+ r = list_entry(tmp, struct ptlrpc_request, rq_list);
+ if (r->rq_xid < min_xid)
+ min_xid = r->rq_xid;
+ }
+ list_for_each(tmp, &imp->imp_sending_list) {
+ struct ptlrpc_request *r;
+ r = list_entry(tmp, struct ptlrpc_request, rq_list);
+ if (r->rq_xid < min_xid)
+ min_xid = r->rq_xid;
+ }
spin_unlock(&imp->imp_lock);
+ if (likely(min_xid != ~0ULL))
+ lustre_msg_set_last_xid(req->rq_reqmsg, min_xid - 1);
+
lustre_msg_set_status(req->rq_reqmsg, current_pid());
rc = sptlrpc_req_refresh_ctx(req, -1);
lustre_msg_get_opc(req->rq_reqmsg));
rc = ptl_send_rpc(req, 0);
+ if (rc == -ENOMEM) {
+ spin_lock(&imp->imp_lock);
+ if (!list_empty(&req->rq_list)) {
+ list_del_init(&req->rq_list);
+ atomic_dec(&req->rq_import->imp_inflight);
+ }
+ spin_unlock(&imp->imp_lock);
+ ptlrpc_rqphase_move(req, RQ_PHASE_NEW);
+ RETURN(rc);
+ }
if (rc) {
DEBUG_REQ(D_HA, req, "send failed (%d); expect timeout", rc);
spin_lock(&req->rq_lock);
spin_lock(&req->rq_lock);
req->rq_resend = 1;
spin_unlock(&req->rq_lock);
- if (req->rq_bulk) {
- __u64 old_xid;
-
- if (!ptlrpc_unregister_bulk(req, 1))
- continue;
-
- /* ensure previous bulk fails */
- old_xid = req->rq_xid;
- req->rq_xid = ptlrpc_next_xid();
- CDEBUG(D_HA, "resend bulk "
- "old x"LPU64
- " new x"LPU64"\n",
- old_xid, req->rq_xid);
- }
+
+ if (req->rq_bulk != NULL &&
+ !ptlrpc_unregister_bulk(req, 1))
+ continue;
}
/*
* rq_wait_ctx is only touched by ptlrpcd,
}
rc = ptl_send_rpc(req, 0);
+ if (rc == -ENOMEM) {
+ spin_lock(&imp->imp_lock);
+ if (!list_empty(&req->rq_list))
+ list_del_init(&req->rq_list);
+ spin_unlock(&imp->imp_lock);
+ ptlrpc_rqphase_move(req, RQ_PHASE_NEW);
+ continue;
+ }
if (rc) {
DEBUG_REQ(D_HA, req,
"send failed: rc = %d", rc);
CDEBUG(D_RPCTRACE, "set %p going to sleep for %d seconds\n",
set, timeout);
- if (timeout == 0 && !cfs_signal_pending())
+ if (timeout == 0 && !signal_pending(current))
/*
* No requests are in-flight (ether timed out
* or delayed), so we can allow interrupts.
* pending when we started, we need to handle it now or we risk
* it being ignored forever */
if (rc == -ETIMEDOUT && !lwi.lwi_allow_intr &&
- cfs_signal_pending()) {
+ signal_pending(current)) {
sigset_t blocked_sigs =
cfs_block_sigsinv(LUSTRE_FATAL_SIGS);
* like SIGINT or SIGKILL. We still ignore less
* important signals since ptlrpc set is not easily
* reentrant from userspace again */
- if (cfs_signal_pending())
+ if (signal_pending(current))
ptlrpc_interrupted_set(set);
cfs_restore_sigs(blocked_sigs);
}
request->rq_import = NULL;
}
if (request->rq_bulk != NULL)
- ptlrpc_free_bulk_pin(request->rq_bulk);
+ ptlrpc_free_bulk(request->rq_bulk);
if (request->rq_reqbuf != NULL || request->rq_clrbuf != NULL)
sptlrpc_cli_free_reqbuf(request);
static int __ptlrpc_req_finished(struct ptlrpc_request *request, int locked);
/**
* Drop one request reference. Must be called with import imp_lock held.
- * When reference count drops to zero, reuqest is freed.
+ * When reference count drops to zero, request is freed.
*/
void ptlrpc_req_finished_with_imp_lock(struct ptlrpc_request *request)
{
req->rq_resend = 1;
req->rq_net_err = 0;
req->rq_timedout = 0;
- if (req->rq_bulk) {
- __u64 old_xid = req->rq_xid;
- /* ensure previous bulk fails */
- req->rq_xid = ptlrpc_next_xid();
- CDEBUG(D_HA, "resend bulk old x"LPU64" new x"LPU64"\n",
- old_xid, req->rq_xid);
- }
ptlrpc_client_wake_req(req);
spin_unlock(&req->rq_lock);
}
lustre_msg_add_flags(req->rq_reqmsg, MSG_REPLAY);
+ spin_lock(&req->rq_lock);
+ req->rq_resend = 0;
+ spin_unlock(&req->rq_lock);
+
LASSERT(imp->imp_replayable);
/* Balanced in ptlrpc_free_committed, usually. */
ptlrpc_request_addref(req);
/**
* Callback used for replayed requests reply processing.
- * In case of succesful reply calls registeresd request replay callback.
+ * In case of successful reply calls registered request replay callback.
* In case of error restart replay process.
*/
static int ptlrpc_replay_interpret(const struct lu_env *env,
ENTRY;
atomic_dec(&imp->imp_replay_inflight);
- if (!ptlrpc_client_replied(req)) {
- CERROR("request replay timed out, restarting recovery\n");
- GOTO(out, rc = -ETIMEDOUT);
- }
+ /* Note: if it is bulk replay (MDS-MDS replay), then even if
+ * server got the request, but bulk transfer timeout, let's
+ * replay the bulk req again */
+ if (!ptlrpc_client_replied(req) ||
+ (req->rq_bulk != NULL &&
+ lustre_msg_get_status(req->rq_repmsg) == -ETIMEDOUT)) {
+ DEBUG_REQ(D_ERROR, req, "request replay timed out.\n");
+ GOTO(out, rc = -ETIMEDOUT);
+ }
if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR &&
(lustre_msg_get_status(req->rq_repmsg) == -ENOTCONN ||
atomic_inc(&req->rq_import->imp_replay_inflight);
ptlrpc_request_addref(req); /* ptlrpcd needs a ref */
- ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
+ ptlrpcd_add_req(req);
RETURN(0);
}
}
/**
+ * If request has a new allocated XID (new request or EINPROGRESS resend),
+ * use this XID as matchbits of bulk, otherwise allocate a new matchbits for
+ * request to ensure previous bulk fails and avoid problems with lost replies
+ * and therefore several transfers landing into the same buffer from different
+ * sending attempts.
+ */
+void ptlrpc_set_bulk_mbits(struct ptlrpc_request *req)
+{
+ struct ptlrpc_bulk_desc *bd = req->rq_bulk;
+
+ LASSERT(bd != NULL);
+
+ if (!req->rq_resend || req->rq_nr_resend != 0) {
+ /* this request has a new xid, just use it as bulk matchbits */
+ req->rq_mbits = req->rq_xid;
+
+ } else { /* needs to generate a new matchbits for resend */
+ __u64 old_mbits = req->rq_mbits;
+
+ if ((bd->bd_import->imp_connect_data.ocd_connect_flags &
+ OBD_CONNECT_BULK_MBITS) != 0)
+ req->rq_mbits = ptlrpc_next_xid();
+ else /* old version transfers rq_xid to peer as matchbits */
+ req->rq_mbits = req->rq_xid = ptlrpc_next_xid();
+
+ CDEBUG(D_HA, "resend bulk old x"LPU64" new x"LPU64"\n",
+ old_mbits, req->rq_mbits);
+ }
+
+ /* For multi-bulk RPCs, rq_mbits is the last mbits needed for bulks so
+ * that server can infer the number of bulks that were prepared,
+ * see LU-1431 */
+ req->rq_mbits += ((bd->bd_iov_count + LNET_MAX_IOV - 1) /
+ LNET_MAX_IOV) - 1;
+}
+
+/**
* Get a glimpse at what next xid value might have been.
* Returns possible next xid.
*/
req->rq_xid = ptlrpc_next_xid();
req->rq_import_generation = req->rq_import->imp_generation;
- ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
+ ptlrpcd_add_req(req);
}
static int work_interpreter(const struct lu_env *env,
git://git.whamcloud.com / fs / lustre-release.git / blobdiff