/*
* Workitem scheduled with (serial == 1) is strictly serialised not only with
* itself, but also with others scheduled this way.
*
* Now there's only one static serialised queue, but in the future more might
* be added, and even dynamic creation of serialised queues might be supported.
*/
void
cfs_wi_schedule(cfs_workitem_t *wi)
{
cfs_wi_sched_t *sched = cfs_wi_to_sched(wi);
LASSERT (!cfs_in_interrupt()); /* because we use plain spinlock */
LASSERT (!sched->ws_shuttingdown);
cfs_wi_sched_lock(sched);
if (!wi->wi_scheduled) {
LASSERT (cfs_list_empty(&wi->wi_list));
wi->wi_scheduled = 1;
if (!wi->wi_running) {
cfs_list_add_tail(&wi->wi_list, &sched->ws_runq);
#ifdef __KERNEL__
cfs_waitq_signal(&sched->ws_waitq);
#endif
} else {
cfs_list_add(&wi->wi_list, &sched->ws_rerunq);
}
}
LASSERT (!cfs_list_empty(&wi->wi_list));
cfs_wi_sched_unlock(sched);
return;
}
/* must be called with resource lock held */
static int
lnet_md_link(lnet_libmd_t *md, lnet_handle_eq_t eq_handle, int cpt)
{
struct lnet_res_container *container = the_lnet.ln_md_containers[cpt];
/* NB we are passed an allocated, but inactive md.
* if we return success, caller may lnet_md_unlink() it.
* otherwise caller may only lnet_md_free() it.
*/
/* This implementation doesn't know how to create START events or
* disable END events. Best to LASSERT our caller is compliant so
* we find out quickly... */
/* TODO - reevaluate what should be here in light of
* the removal of the start and end events
* maybe there we shouldn't even allow LNET_EQ_NONE!)
* LASSERT (eq == NULL);
*/
if (!LNetHandleIsInvalid(eq_handle)) {
md->md_eq = lnet_handle2eq(&eq_handle);
if (md->md_eq == NULL)
return -ENOENT;
(*md->md_eq->eq_refs[cpt])++;
}
lnet_res_lh_initialize(container, &md->md_lh);
LASSERT(cfs_list_empty(&md->md_list));
cfs_list_add(&md->md_list, &container->rec_active);
return 0;
}
static int
usocklnd_send_tx_immediately(usock_conn_t *conn, usock_tx_t *tx)
{
int rc;
int rc2;
int partial_send = 0;
usock_peer_t *peer = conn->uc_peer;
LASSERT (peer != NULL);
/* usocklnd_enqueue_tx() turned it on for us */
LASSERT(conn->uc_sending);
//counter_imm_start++;
rc = usocklnd_send_tx(conn, tx);
if (rc == 0) { /* partial send or connection closed */
pthread_mutex_lock(&conn->uc_lock);
cfs_list_add(&tx->tx_list, &conn->uc_tx_list);
conn->uc_sending = 0;
pthread_mutex_unlock(&conn->uc_lock);
partial_send = 1;
} else {
usocklnd_destroy_tx(peer->up_ni, tx);
/* NB: lnetmsg was finalized, so we *must* return 0 */
if (rc < 0) { /* real error */
usocklnd_conn_kill(conn);
return 0;
}
/* rc == 1: tx was sent completely */
rc = 0; /* let's say to caller 'Ok' */
//counter_imm_complete++;
}
pthread_mutex_lock(&conn->uc_lock);
conn->uc_sending = 0;
/* schedule write handler */
if (partial_send ||
(conn->uc_state == UC_READY &&
(!cfs_list_empty(&conn->uc_tx_list) ||
!cfs_list_empty(&conn->uc_zcack_list)))) {
conn->uc_tx_deadline =
cfs_time_shift(usock_tuns.ut_timeout);
conn->uc_tx_flag = 1;
rc2 = usocklnd_add_pollrequest(conn, POLL_TX_SET_REQUEST, POLLOUT);
if (rc2 != 0)
usocklnd_conn_kill_locked(conn);
else
usocklnd_wakeup_pollthread(conn->uc_pt_idx);
}
pthread_mutex_unlock(&conn->uc_lock);
return rc;
}
int
lwt_init ()
{
int i;
int j;
for (i = 0; i < cfs_num_online_cpus(); i++)
if (lwt_cpus[i].lwtc_current_page != NULL)
return (-EALREADY);
LASSERT (!lwt_enabled);
/* NULL pointers, zero scalars */
memset (lwt_cpus, 0, sizeof (lwt_cpus));
lwt_pages_per_cpu =
LWT_MEMORY / (cfs_num_online_cpus() * PAGE_CACHE_SIZE);
for (i = 0; i < cfs_num_online_cpus(); i++)
for (j = 0; j < lwt_pages_per_cpu; j++) {
struct page *page = alloc_page(GFP_KERNEL);
lwt_page_t *lwtp;
if (page == NULL) {
CERROR ("Can't allocate page\n");
lwt_fini ();
return (-ENOMEM);
}
LIBCFS_ALLOC(lwtp, sizeof (*lwtp));
if (lwtp == NULL) {
CERROR ("Can't allocate lwtp\n");
__free_page(page);
lwt_fini ();
return (-ENOMEM);
}
lwtp->lwtp_page = page;
lwtp->lwtp_events = page_address(page);
memset(lwtp->lwtp_events, 0, PAGE_CACHE_SIZE);
if (j == 0) {
CFS_INIT_LIST_HEAD (&lwtp->lwtp_list);
lwt_cpus[i].lwtc_current_page = lwtp;
} else {
cfs_list_add (&lwtp->lwtp_list,
&lwt_cpus[i].lwtc_current_page->lwtp_list);
}
}
lwt_enabled = 1;
cfs_mb();
LWT_EVENT(0,0,0,0);
return (0);
}
/*
* Add object to list of dirty objects in tx handle.
*/
static void
osd_object_sa_dirty_add(struct osd_object *obj, struct osd_thandle *oh)
{
if (!cfs_list_empty(&obj->oo_sa_linkage))
return;
down(&oh->ot_sa_lock);
write_lock(&obj->oo_attr_lock);
if (likely(cfs_list_empty(&obj->oo_sa_linkage)))
cfs_list_add(&obj->oo_sa_linkage, &oh->ot_sa_list);
write_unlock(&obj->oo_attr_lock);
up(&oh->ot_sa_lock);
}
/** records that a write is in flight */
void vvp_write_pending(struct ccc_object *club, struct ccc_page *page)
{
struct ll_inode_info *lli = ll_i2info(club->cob_inode);
ENTRY;
spin_lock(&lli->lli_lock);
lli->lli_flags |= LLIF_SOM_DIRTY;
if (page != NULL && cfs_list_empty(&page->cpg_pending_linkage))
cfs_list_add(&page->cpg_pending_linkage,
&club->cob_pending_list);
spin_unlock(&lli->lli_lock);
EXIT;
}
struct shrinker *set_shrinker(int seeks, shrink_callback cb)
{
struct shrinker *s = (struct shrinker *)
kmalloc(sizeof(struct shrinker), __GFP_ZERO);
if (s) {
s->cb = cb;
s->seeks = seeks;
s->nr = 2;
spin_lock(&shrinker_guard);
cfs_list_add(&s->list, &shrinker_hdr);
spin_unlock(&shrinker_guard);
}
return s;
}
static void lcw_cb(ulong_ptr_t data)
{
struct lc_watchdog *lcw = (struct lc_watchdog *)data;
ENTRY;
if (lcw->lcw_state != LC_WATCHDOG_ENABLED) {
EXIT;
return;
}
lcw->lcw_state = LC_WATCHDOG_EXPIRED;
cfs_spin_lock_bh(&lcw->lcw_lock);
LASSERT(cfs_list_empty(&lcw->lcw_list));
cfs_spin_lock_bh(&lcw_pending_timers_lock);
lcw->lcw_refcount++; /* +1 for pending list */
cfs_list_add(&lcw->lcw_list, &lcw_pending_timers);
cfs_waitq_signal(&lcw_event_waitq);
cfs_spin_unlock_bh(&lcw_pending_timers_lock);
cfs_spin_unlock_bh(&lcw->lcw_lock);
EXIT;
}
static int lcw_dispatch_main(void *data)
{
int rc = 0;
unsigned long flags;
struct lc_watchdog *lcw;
CFS_LIST_HEAD (zombies);
ENTRY;
cfs_daemonize("lc_watchdogd");
SIGNAL_MASK_LOCK(current, flags);
sigfillset(¤t->blocked);
RECALC_SIGPENDING;
SIGNAL_MASK_UNLOCK(current, flags);
cfs_complete(&lcw_start_completion);
while (1) {
int dumplog = 1;
cfs_wait_event_interruptible(lcw_event_waitq,
is_watchdog_fired(), rc);
CDEBUG(D_INFO, "Watchdog got woken up...\n");
if (cfs_test_bit(LCW_FLAG_STOP, &lcw_flags)) {
CDEBUG(D_INFO, "LCW_FLAG_STOP was set, shutting down...\n");
cfs_spin_lock_bh(&lcw_pending_timers_lock);
rc = !cfs_list_empty(&lcw_pending_timers);
cfs_spin_unlock_bh(&lcw_pending_timers_lock);
if (rc) {
CERROR("pending timers list was not empty at "
"time of watchdog dispatch shutdown\n");
}
break;
}
cfs_spin_lock_bh(&lcw_pending_timers_lock);
while (!cfs_list_empty(&lcw_pending_timers)) {
int is_dumplog;
lcw = cfs_list_entry(lcw_pending_timers.next,
struct lc_watchdog, lcw_list);
/* +1 ref for callback to make sure lwc wouldn't be
* deleted after releasing lcw_pending_timers_lock */
lcw->lcw_refcount++;
cfs_spin_unlock_bh(&lcw_pending_timers_lock);
/* lock ordering */
cfs_spin_lock_bh(&lcw->lcw_lock);
cfs_spin_lock_bh(&lcw_pending_timers_lock);
if (cfs_list_empty(&lcw->lcw_list)) {
/* already removed from pending list */
lcw->lcw_refcount--; /* -1 ref for callback */
if (lcw->lcw_refcount == 0)
cfs_list_add(&lcw->lcw_list, &zombies);
cfs_spin_unlock_bh(&lcw->lcw_lock);
/* still hold lcw_pending_timers_lock */
continue;
}
cfs_list_del_init(&lcw->lcw_list);
lcw->lcw_refcount--; /* -1 ref for pending list */
cfs_spin_unlock_bh(&lcw_pending_timers_lock);
cfs_spin_unlock_bh(&lcw->lcw_lock);
CDEBUG(D_INFO, "found lcw for pid " LPPID "\n",
lcw->lcw_pid);
lcw_dump_stack(lcw);
is_dumplog = lcw->lcw_callback == lc_watchdog_dumplog;
if (lcw->lcw_state != LC_WATCHDOG_DISABLED &&
(dumplog || !is_dumplog)) {
lcw->lcw_callback(lcw->lcw_pid, lcw->lcw_data);
if (dumplog && is_dumplog)
dumplog = 0;
}
cfs_spin_lock_bh(&lcw_pending_timers_lock);
lcw->lcw_refcount--; /* -1 ref for callback */
if (lcw->lcw_refcount == 0)
cfs_list_add(&lcw->lcw_list, &zombies);
}
cfs_spin_unlock_bh(&lcw_pending_timers_lock);
while (!cfs_list_empty(&zombies)) {
lcw = cfs_list_entry(lcw_pending_timers.next,
struct lc_watchdog, lcw_list);
cfs_list_del(&lcw->lcw_list);
LIBCFS_FREE(lcw, sizeof(*lcw));
}
}
cfs_complete(&lcw_stop_completion);
RETURN(rc);
}
/* All actions that we need after sending hello on passive conn:
* 1) Cope with 1st easy case: conn is already linked to a peer
* 2) Cope with 2nd easy case: remove zombie conn
* 3) Resolve race:
* a) find the peer
* b) link the conn to the peer if conn[idx] is empty
* c) if the conn[idx] isn't empty and is in READY state,
* remove the conn as duplicated
* d) if the conn[idx] isn't empty and isn't in READY state,
* override conn[idx] with the conn
*/
int
usocklnd_passiveconn_hellosent(usock_conn_t *conn)
{
usock_conn_t *conn2;
usock_peer_t *peer;
cfs_list_t tx_list;
cfs_list_t zcack_list;
int idx;
int rc = 0;
/* almost nothing to do if conn is already linked to peer hash table */
if (conn->uc_peer != NULL)
goto passive_hellosent_done;
/* conn->uc_peer == NULL, so the conn isn't accessible via
* peer hash list, so nobody can touch the conn but us */
if (conn->uc_ni == NULL) /* remove zombie conn */
goto passive_hellosent_connkill;
/* all code below is race resolution, because normally
* passive conn is linked to peer just after receiving hello */
CFS_INIT_LIST_HEAD (&tx_list);
CFS_INIT_LIST_HEAD (&zcack_list);
/* conn is passive and isn't linked to any peer,
so its tx and zc_ack lists have to be empty */
LASSERT (cfs_list_empty(&conn->uc_tx_list) &&
cfs_list_empty(&conn->uc_zcack_list) &&
conn->uc_sending == 0);
rc = usocklnd_find_or_create_peer(conn->uc_ni, conn->uc_peerid, &peer);
if (rc)
return rc;
idx = usocklnd_type2idx(conn->uc_type);
/* try to link conn to peer */
pthread_mutex_lock(&peer->up_lock);
if (peer->up_conns[idx] == NULL) {
usocklnd_link_conn_to_peer(conn, peer, idx);
usocklnd_conn_addref(conn);
conn->uc_peer = peer;
usocklnd_peer_addref(peer);
} else {
conn2 = peer->up_conns[idx];
pthread_mutex_lock(&conn2->uc_lock);
if (conn2->uc_state == UC_READY) {
/* conn2 is in READY state, so conn is "duplicated" */
pthread_mutex_unlock(&conn2->uc_lock);
pthread_mutex_unlock(&peer->up_lock);
usocklnd_peer_decref(peer);
goto passive_hellosent_connkill;
}
/* uc_state != UC_READY => switch conn and conn2 */
/* Relink txs and zc_acks from conn2 to conn.
* We're sure that nobody but us can access to conn,
* nevertheless we use mutex (if we're wrong yet,
* deadlock is easy to see that corrupted list */
cfs_list_add(&tx_list, &conn2->uc_tx_list);
cfs_list_del_init(&conn2->uc_tx_list);
cfs_list_add(&zcack_list, &conn2->uc_zcack_list);
cfs_list_del_init(&conn2->uc_zcack_list);
pthread_mutex_lock(&conn->uc_lock);
cfs_list_add_tail(&conn->uc_tx_list, &tx_list);
cfs_list_del_init(&tx_list);
cfs_list_add_tail(&conn->uc_zcack_list, &zcack_list);
cfs_list_del_init(&zcack_list);
conn->uc_peer = peer;
pthread_mutex_unlock(&conn->uc_lock);
conn2->uc_peer = NULL; /* make conn2 zombie */
pthread_mutex_unlock(&conn2->uc_lock);
usocklnd_conn_decref(conn2);
usocklnd_link_conn_to_peer(conn, peer, idx);
usocklnd_conn_addref(conn);
conn->uc_peer = peer;
}
lnet_ni_decref(conn->uc_ni);
conn->uc_ni = NULL;
pthread_mutex_unlock(&peer->up_lock);
usocklnd_peer_decref(peer);
passive_hellosent_done:
/* safely transit to UC_READY state */
/* rc == 0 */
pthread_mutex_lock(&conn->uc_lock);
if (conn->uc_state != UC_DEAD) {
usocklnd_rx_ksmhdr_state_transition(conn);
/* we're ready to recive incoming packets and maybe
already have smth. to transmit */
LASSERT (conn->uc_sending == 0);
if ( cfs_list_empty(&conn->uc_tx_list) &&
cfs_list_empty(&conn->uc_zcack_list) ) {
conn->uc_tx_flag = 0;
rc = usocklnd_add_pollrequest(conn, POLL_SET_REQUEST,
POLLIN);
} else {
conn->uc_tx_deadline =
cfs_time_shift(usock_tuns.ut_timeout);
conn->uc_tx_flag = 1;
rc = usocklnd_add_pollrequest(conn, POLL_SET_REQUEST,
POLLIN | POLLOUT);
}
if (rc == 0)
conn->uc_state = UC_READY;
}
pthread_mutex_unlock(&conn->uc_lock);
return rc;
passive_hellosent_connkill:
usocklnd_conn_kill(conn);
return 0;
}
int
usocklnd_write_handler(usock_conn_t *conn)
{
usock_tx_t *tx;
int ret;
int rc = 0;
int state;
usock_peer_t *peer;
lnet_ni_t *ni;
pthread_mutex_lock(&conn->uc_lock); /* like membar */
state = conn->uc_state;
pthread_mutex_unlock(&conn->uc_lock);
switch (state) {
case UC_CONNECTING:
/* hello_tx has already been initialized
* in usocklnd_create_active_conn() */
usocklnd_conn_new_state(conn, UC_SENDING_HELLO);
/* fall through */
case UC_SENDING_HELLO:
rc = usocklnd_send_tx(conn, conn->uc_tx_hello);
if (rc <= 0) /* error or partial send or connection closed */
break;
/* tx with hello was sent successfully */
usocklnd_destroy_tx(NULL, conn->uc_tx_hello);
conn->uc_tx_hello = NULL;
if (conn->uc_activeflag == 1) /* active conn */
rc = usocklnd_activeconn_hellosent(conn);
else /* passive conn */
rc = usocklnd_passiveconn_hellosent(conn);
break;
case UC_READY:
pthread_mutex_lock(&conn->uc_lock);
peer = conn->uc_peer;
LASSERT (peer != NULL);
ni = peer->up_ni;
if (cfs_list_empty(&conn->uc_tx_list) &&
cfs_list_empty(&conn->uc_zcack_list)) {
LASSERT(usock_tuns.ut_fair_limit > 1);
pthread_mutex_unlock(&conn->uc_lock);
return 0;
}
tx = usocklnd_try_piggyback(&conn->uc_tx_list,
&conn->uc_zcack_list);
if (tx != NULL)
conn->uc_sending = 1;
else
rc = -ENOMEM;
pthread_mutex_unlock(&conn->uc_lock);
if (rc)
break;
rc = usocklnd_send_tx(conn, tx);
if (rc == 0) { /* partial send or connection closed */
pthread_mutex_lock(&conn->uc_lock);
cfs_list_add(&tx->tx_list, &conn->uc_tx_list);
conn->uc_sending = 0;
pthread_mutex_unlock(&conn->uc_lock);
break;
}
if (rc < 0) { /* real error */
usocklnd_destroy_tx(ni, tx);
break;
}
/* rc == 1: tx was sent completely */
usocklnd_destroy_tx(ni, tx);
pthread_mutex_lock(&conn->uc_lock);
conn->uc_sending = 0;
if (conn->uc_state != UC_DEAD &&
cfs_list_empty(&conn->uc_tx_list) &&
cfs_list_empty(&conn->uc_zcack_list)) {
conn->uc_tx_flag = 0;
ret = usocklnd_add_pollrequest(conn,
POLL_TX_SET_REQUEST, 0);
if (ret)
rc = ret;
}
pthread_mutex_unlock(&conn->uc_lock);
break;
case UC_DEAD:
break;
default:
LBUG();
}
if (rc < 0)
usocklnd_conn_kill(conn);
return rc;
}
/* All actions that we need after receiving hello on active conn:
* 1) Schedule removing if we're zombie
* 2) Restart active conn if we lost the race
* 3) Else: update RX part to receive KSM header
*/
int
usocklnd_activeconn_hellorecv(usock_conn_t *conn)
{
int rc = 0;
ksock_hello_msg_t *hello = conn->uc_rx_hello;
usock_peer_t *peer = conn->uc_peer;
/* Active conn with peer==NULL is zombie.
* Don't try to link it to peer because the conn
* has already had a chance to proceed at the beginning */
if (peer == NULL) {
LASSERT(cfs_list_empty(&conn->uc_tx_list) &&
cfs_list_empty(&conn->uc_zcack_list));
usocklnd_conn_kill(conn);
return 0;
}
peer->up_last_alive = cfs_time_current();
/* peer says that we lost the race */
if (hello->kshm_ctype == SOCKLND_CONN_NONE) {
/* Start new active conn, relink txs and zc_acks from
* the conn to new conn, schedule removing the conn.
* Actually, we're expecting that a passive conn will
* make us zombie soon and take care of our txs and
* zc_acks */
cfs_list_t tx_list, zcack_list;
usock_conn_t *conn2;
int idx = usocklnd_type2idx(conn->uc_type);
CFS_INIT_LIST_HEAD (&tx_list);
CFS_INIT_LIST_HEAD (&zcack_list);
/* Block usocklnd_send() to check peer->up_conns[idx]
* and to enqueue more txs */
pthread_mutex_lock(&peer->up_lock);
pthread_mutex_lock(&conn->uc_lock);
/* usocklnd_shutdown() could kill us */
if (conn->uc_state == UC_DEAD) {
pthread_mutex_unlock(&conn->uc_lock);
pthread_mutex_unlock(&peer->up_lock);
return 0;
}
LASSERT (peer == conn->uc_peer);
LASSERT (peer->up_conns[idx] == conn);
rc = usocklnd_create_active_conn(peer, conn->uc_type, &conn2);
if (rc) {
conn->uc_errored = 1;
pthread_mutex_unlock(&conn->uc_lock);
pthread_mutex_unlock(&peer->up_lock);
return rc;
}
usocklnd_link_conn_to_peer(conn2, peer, idx);
conn2->uc_peer = peer;
/* unlink txs and zcack from the conn */
cfs_list_add(&tx_list, &conn->uc_tx_list);
cfs_list_del_init(&conn->uc_tx_list);
cfs_list_add(&zcack_list, &conn->uc_zcack_list);
cfs_list_del_init(&conn->uc_zcack_list);
/* link they to the conn2 */
cfs_list_add(&conn2->uc_tx_list, &tx_list);
cfs_list_del_init(&tx_list);
cfs_list_add(&conn2->uc_zcack_list, &zcack_list);
cfs_list_del_init(&zcack_list);
/* make conn zombie */
conn->uc_peer = NULL;
usocklnd_peer_decref(peer);
/* schedule conn2 for processing */
rc = usocklnd_add_pollrequest(conn2, POLL_ADD_REQUEST, POLLOUT);
if (rc) {
peer->up_conns[idx] = NULL;
usocklnd_conn_decref(conn2); /* should destroy conn */
} else {
usocklnd_conn_kill_locked(conn);
}
pthread_mutex_unlock(&conn->uc_lock);
pthread_mutex_unlock(&peer->up_lock);
usocklnd_conn_decref(conn);
} else { /* hello->kshm_ctype != SOCKLND_CONN_NONE */
if (conn->uc_type != usocklnd_invert_type(hello->kshm_ctype))
return -EPROTO;
pthread_mutex_lock(&peer->up_lock);
usocklnd_cleanup_stale_conns(peer, hello->kshm_src_incarnation,
conn);
pthread_mutex_unlock(&peer->up_lock);
/* safely transit to UC_READY state */
/* rc == 0 */
pthread_mutex_lock(&conn->uc_lock);
if (conn->uc_state != UC_DEAD) {
usocklnd_rx_ksmhdr_state_transition(conn);
/* POLLIN is already set because we just
* received hello, but maybe we've smth. to
* send? */
LASSERT (conn->uc_sending == 0);
if ( !cfs_list_empty(&conn->uc_tx_list) ||
!cfs_list_empty(&conn->uc_zcack_list) ) {
conn->uc_tx_deadline =
cfs_time_shift(usock_tuns.ut_timeout);
conn->uc_tx_flag = 1;
rc = usocklnd_add_pollrequest(conn,
POLL_SET_REQUEST,
POLLIN | POLLOUT);
}
if (rc == 0)
conn->uc_state = UC_READY;
}
pthread_mutex_unlock(&conn->uc_lock);
}
return rc;
}
static int mdt_reint_setattr(struct mdt_thread_info *info,
struct mdt_lock_handle *lhc)
{
struct md_attr *ma = &info->mti_attr;
struct mdt_reint_record *rr = &info->mti_rr;
struct ptlrpc_request *req = mdt_info_req(info);
struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
struct mdt_file_data *mfd;
struct mdt_object *mo;
struct mdt_body *repbody;
int som_au, rc, rc2;
ENTRY;
DEBUG_REQ(D_INODE, req, "setattr "DFID" %x", PFID(rr->rr_fid1),
(unsigned int)ma->ma_attr.la_valid);
if (info->mti_dlm_req)
ldlm_request_cancel(req, info->mti_dlm_req, 0);
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
mo = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
if (IS_ERR(mo))
GOTO(out, rc = PTR_ERR(mo));
if (mdt_object_obf(mo))
GOTO(out_put, rc = -EPERM);
/* start a log jounal handle if needed */
if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM)) {
if ((ma->ma_attr.la_valid & LA_SIZE) ||
(rr->rr_flags & MRF_OPEN_TRUNC)) {
/* Check write access for the O_TRUNC case */
if (mdt_write_read(mo) < 0)
GOTO(out_put, rc = -ETXTBSY);
}
} else if (info->mti_ioepoch &&
(info->mti_ioepoch->flags & MF_EPOCH_OPEN)) {
/* Truncate case. IOEpoch is opened. */
rc = mdt_write_get(mo);
if (rc)
GOTO(out_put, rc);
mfd = mdt_mfd_new();
if (mfd == NULL) {
mdt_write_put(mo);
GOTO(out_put, rc = -ENOMEM);
}
mdt_ioepoch_open(info, mo, 0);
repbody->ioepoch = mo->mot_ioepoch;
mdt_object_get(info->mti_env, mo);
mdt_mfd_set_mode(mfd, MDS_FMODE_TRUNC);
mfd->mfd_object = mo;
mfd->mfd_xid = req->rq_xid;
spin_lock(&med->med_open_lock);
cfs_list_add(&mfd->mfd_list, &med->med_open_head);
spin_unlock(&med->med_open_lock);
repbody->handle.cookie = mfd->mfd_handle.h_cookie;
}
som_au = info->mti_ioepoch && info->mti_ioepoch->flags & MF_SOM_CHANGE;
if (som_au) {
/* SOM Attribute update case. Find the proper mfd and update
* SOM attributes on the proper object. */
LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
LASSERT(info->mti_ioepoch);
spin_lock(&med->med_open_lock);
mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
if (mfd == NULL) {
spin_unlock(&med->med_open_lock);
CDEBUG(D_INODE, "no handle for file close: "
"fid = "DFID": cookie = "LPX64"\n",
PFID(info->mti_rr.rr_fid1),
info->mti_ioepoch->handle.cookie);
GOTO(out_put, rc = -ESTALE);
}
LASSERT(mfd->mfd_mode == MDS_FMODE_SOM);
LASSERT(!(info->mti_ioepoch->flags & MF_EPOCH_CLOSE));
class_handle_unhash(&mfd->mfd_handle);
cfs_list_del_init(&mfd->mfd_list);
spin_unlock(&med->med_open_lock);
mdt_mfd_close(info, mfd);
} else if ((ma->ma_valid & MA_INODE) && ma->ma_attr.la_valid) {
LASSERT((ma->ma_valid & MA_LOV) == 0);
rc = mdt_attr_set(info, mo, ma, rr->rr_flags);
if (rc)
GOTO(out_put, rc);
} else if ((ma->ma_valid & MA_LOV) && (ma->ma_valid & MA_INODE)) {
struct lu_buf *buf = &info->mti_buf;
LASSERT(ma->ma_attr.la_valid == 0);
buf->lb_buf = ma->ma_lmm;
buf->lb_len = ma->ma_lmm_size;
rc = mo_xattr_set(info->mti_env, mdt_object_child(mo),
buf, XATTR_NAME_LOV, 0);
if (rc)
GOTO(out_put, rc);
} else
LBUG();
/* If file data is modified, add the dirty flag */
if (ma->ma_attr_flags & MDS_DATA_MODIFIED)
rc = mdt_add_dirty_flag(info, mo, ma);
ma->ma_need = MA_INODE;
ma->ma_valid = 0;
rc = mdt_attr_get_complex(info, mo, ma);
if (rc != 0)
GOTO(out_put, rc);
mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(mo));
if (info->mti_mdt->mdt_opts.mo_oss_capa &&
exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA &&
S_ISREG(lu_object_attr(&mo->mot_obj.mo_lu)) &&
(ma->ma_attr.la_valid & LA_SIZE) && !som_au) {
struct lustre_capa *capa;
capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
LASSERT(capa);
capa->lc_opc = CAPA_OPC_OSS_DEFAULT | CAPA_OPC_OSS_TRUNC;
rc = mo_capa_get(info->mti_env, mdt_object_child(mo), capa, 0);
if (rc)
GOTO(out_put, rc);
repbody->valid |= OBD_MD_FLOSSCAPA;
}
EXIT;
out_put:
mdt_object_put(info->mti_env, mo);
out:
if (rc == 0)
mdt_counter_incr(req, LPROC_MDT_SETATTR);
mdt_client_compatibility(info);
rc2 = mdt_fix_reply(info);
if (rc == 0)
rc = rc2;
return rc;
}
