* with the DLM lock reply from the server. Copy of osc_update_enqueue()
* logic.
*
- * This can be optimized to not update attributes when lock is a result of a
- * local match.
- *
* Called under lock and resource spin-locks.
*/
-static void osc_lock_lvb_update(const struct lu_env *env,
- struct osc_object *osc,
- struct ldlm_lock *dlmlock,
- struct ost_lvb *lvb)
+void osc_lock_lvb_update(const struct lu_env *env,
+ struct osc_object *osc,
+ struct ldlm_lock *dlmlock,
+ struct ost_lvb *lvb)
{
- struct cl_object *obj = osc2cl(osc);
- struct lov_oinfo *oinfo = osc->oo_oinfo;
- struct cl_attr *attr = &osc_env_info(env)->oti_attr;
- unsigned valid;
+ struct cl_object *obj = osc2cl(osc);
+ struct lov_oinfo *oinfo = osc->oo_oinfo;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+ unsigned valid, setkms = 0;
ENTRY;
if (size > dlmlock->l_policy_data.l_extent.end)
size = dlmlock->l_policy_data.l_extent.end + 1;
if (size >= oinfo->loi_kms) {
- LDLM_DEBUG(dlmlock, "lock acquired, setting rss=%llu"
- ", kms=%llu", lvb->lvb_size, size);
valid |= CAT_KMS;
attr->cat_kms = size;
- } else {
- LDLM_DEBUG(dlmlock, "lock acquired, setting rss="
- "%llu; leaving kms=%llu, end=%llu",
- lvb->lvb_size, oinfo->loi_kms,
- dlmlock->l_policy_data.l_extent.end);
+ setkms = 1;
}
ldlm_lock_allow_match_locked(dlmlock);
}
+ /* The size should not be less than the kms */
+ if (attr->cat_size < oinfo->loi_kms)
+ attr->cat_size = oinfo->loi_kms;
+
+ LDLM_DEBUG(dlmlock, "acquired size %llu, setting rss=%llu;%s "
+ "kms=%llu, end=%llu", lvb->lvb_size, attr->cat_size,
+ setkms ? "" : " leaving",
+ setkms ? attr->cat_kms : oinfo->loi_kms,
+ dlmlock ? dlmlock->l_policy_data.l_extent.end : -1ull);
+
cl_object_attr_update(env, obj, attr, valid);
cl_object_attr_unlock(obj);
}
static void osc_lock_granted(const struct lu_env *env, struct osc_lock *oscl,
- struct lustre_handle *lockh, bool lvb_update)
+ struct lustre_handle *lockh)
{
+ struct osc_object *osc = cl2osc(oscl->ols_cl.cls_obj);
struct ldlm_lock *dlmlock;
dlmlock = ldlm_handle2lock_long(lockh, 0);
/* lock reference taken by ldlm_handle2lock_long() is
* owned by osc_lock and released in osc_lock_detach()
*/
- lu_ref_add(&dlmlock->l_reference, "osc_lock", oscl);
+ lu_ref_add_atomic(&dlmlock->l_reference, "osc_lock", oscl);
oscl->ols_has_ref = 1;
LASSERT(oscl->ols_dlmlock == NULL);
descr->cld_gid = ext->gid;
/* no lvb update for matched lock */
- if (lvb_update) {
+ if (!ldlm_is_lvb_cached(dlmlock)) {
LASSERT(oscl->ols_flags & LDLM_FL_LVB_READY);
- osc_lock_lvb_update(env, cl2osc(oscl->ols_cl.cls_obj),
- dlmlock, NULL);
+ LASSERT(osc == dlmlock->l_ast_data);
+ osc_lock_lvb_update(env, osc, dlmlock, NULL);
+ ldlm_set_lvb_cached(dlmlock);
}
LINVRNT(osc_lock_invariant(oscl));
}
}
if (rc == 0)
- osc_lock_granted(env, oscl, lockh, errcode == ELDLM_OK);
+ osc_lock_granted(env, oscl, lockh);
/* Error handling, some errors are tolerable. */
if (oscl->ols_locklessable && rc == -EUSERS) {
lock_res_and_lock(dlmlock);
LASSERT(ldlm_is_granted(dlmlock));
- /* there is no osc_lock associated with speculative locks */
+ /* there is no osc_lock associated with speculative locks
+ * thus no need to set LDLM_FL_LVB_CACHED */
osc_lock_lvb_update(env, osc, dlmlock, NULL);
unlock_res_and_lock(dlmlock);
if (dlmlock->l_ast_data != NULL) {
obj = osc2cl(dlmlock->l_ast_data);
- dlmlock->l_ast_data = NULL;
-
cl_object_get(obj);
}
unlock_res_and_lock(dlmlock);
+ OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_CANCEL, 5);
+
/* if l_ast_data is NULL, the dlmlock was enqueued by AGL or
* the object has been destroyed. */
if (obj != NULL) {
/* losing a lock, update kms */
lock_res_and_lock(dlmlock);
+ /* clearing l_ast_data after flushing data,
+ * to let glimpse ast find the lock and the object */
+ dlmlock->l_ast_data = NULL;
cl_object_attr_lock(obj);
/* Must get the value under the lock to avoid race. */
old_kms = cl2osc(obj)->oo_oinfo->loi_kms;
struct ost_lvb *lvb;
struct req_capsule *cap;
struct cl_object *obj = NULL;
+ struct ldlm_resource *res = dlmlock->l_resource;
+ struct ldlm_match_data matchdata = { 0 };
+ union ldlm_policy_data policy;
+ enum ldlm_mode mode = LCK_PW | LCK_GROUP | LCK_PR;
int result;
__u16 refcheck;
if (IS_ERR(env))
GOTO(out, result = PTR_ERR(env));
+ policy.l_extent.start = 0;
+ policy.l_extent.end = LUSTRE_EOF;
- lock_res_and_lock(dlmlock);
- if (dlmlock->l_ast_data != NULL) {
- obj = osc2cl(dlmlock->l_ast_data);
- cl_object_get(obj);
+ matchdata.lmd_mode = &mode;
+ matchdata.lmd_policy = &policy;
+ matchdata.lmd_flags = LDLM_FL_TEST_LOCK | LDLM_FL_CBPENDING;
+ matchdata.lmd_match = LDLM_MATCH_UNREF | LDLM_MATCH_AST_ANY;
+
+ LDLM_LOCK_GET(dlmlock);
+
+ /* If any dlmlock has l_ast_data set, we must find it or we risk
+ * missing a size update done under a different lock.
+ */
+ while (dlmlock) {
+ lock_res_and_lock(dlmlock);
+ if (dlmlock->l_ast_data) {
+ obj = osc2cl(dlmlock->l_ast_data);
+ cl_object_get(obj);
+ }
+ unlock_res_and_lock(dlmlock);
+ LDLM_LOCK_RELEASE(dlmlock);
+
+ dlmlock = NULL;
+
+ if (obj == NULL && res->lr_type == LDLM_EXTENT) {
+ if (OBD_FAIL_CHECK(OBD_FAIL_OSC_NO_SIZE_DATA))
+ break;
+
+ lock_res(res);
+ dlmlock = search_itree(res, &matchdata);
+ unlock_res(res);
+ }
}
- unlock_res_and_lock(dlmlock);
if (obj != NULL) {
/* Do not grab the mutex of cl_lock for glimpse.
}
EXPORT_SYMBOL(osc_ldlm_glimpse_ast);
-static int weigh_cb(const struct lu_env *env, struct cl_io *io,
- struct osc_page *ops, void *cbdata)
+static bool weigh_cb(const struct lu_env *env, struct cl_io *io,
+ struct osc_page *ops, void *cbdata)
{
struct cl_page *page = ops->ops_cl.cpl_page;
if (cl_page_is_vmlocked(env, page) || PageDirty(page->cp_vmpage) ||
PageWriteback(page->cp_vmpage))
- return CLP_GANG_ABORT;
+ return false;
*(pgoff_t *)cbdata = osc_index(ops) + 1;
- return CLP_GANG_OKAY;
+ return true;
}
static unsigned long osc_lock_weight(const struct lu_env *env,
io->ci_ignore_layout = 1;
result = cl_io_init(env, io, CIT_MISC, io->ci_obj);
if (result != 0)
- RETURN(result);
+ RETURN(1);
page_index = cl_index(obj, start);
- do {
- result = osc_page_gang_lookup(env, io, oscobj,
- page_index, cl_index(obj, end),
- weigh_cb, (void *)&page_index);
- if (result == CLP_GANG_ABORT)
- break;
- if (result == CLP_GANG_RESCHED)
- cond_resched();
- } while (result != CLP_GANG_OKAY);
+
+ if (!osc_page_gang_lookup(env, io, oscobj,
+ page_index, cl_index(obj, end),
+ weigh_cb, (void *)&page_index))
+ result = 1;
cl_io_fini(env, io);
- return result == CLP_GANG_ABORT ? 1 : 0;
+ return result;
}
/**
unlock_res_and_lock(dlmlock);
if (obj == NULL)
- GOTO(out, weight = 1);
+ GOTO(out, weight = 0);
spin_lock(&obj->oo_ol_spin);
list_for_each_entry(oscl, &obj->oo_ol_list, ols_nextlock_oscobj) {
RETURN(0);
if ((oscl->ols_flags & LDLM_FL_NO_EXPANSION) &&
- !(exp_connect_lockahead_old(exp) || exp_connect_lockahead(exp))) {
+ !exp_connect_lockahead(exp)) {
result = -EOPNOTSUPP;
- CERROR("%s: server does not support lockahead/locknoexpand:"
- "rc = %d\n", exp->exp_obd->obd_name, result);
+ CERROR("%s: server does not support lockahead/locknoexpand: rc = %d\n",
+ exp->exp_obd->obd_name, result);
RETURN(result);
}
}
result = osc_enqueue_base(exp, resname, &oscl->ols_flags,
policy, &oscl->ols_lvb,
- osc->oo_oinfo->loi_kms_valid,
upcall, cookie,
&oscl->ols_einfo, PTLRPCD_SET, async,
oscl->ols_speculative);
struct ldlm_lock *lock = NULL;
enum ldlm_mode mode;
__u64 flags;
+ enum ldlm_match_flags match_flags = 0;
ENTRY;
flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING;
if (dap_flags & OSC_DAP_FL_TEST_LOCK)
flags |= LDLM_FL_TEST_LOCK;
+
+ if (dap_flags & OSC_DAP_FL_AST)
+ match_flags |= LDLM_MATCH_AST;
+
+ if (dap_flags & OSC_DAP_FL_CANCELING)
+ match_flags |= LDLM_MATCH_UNREF;
+
+ if (dap_flags & OSC_DAP_FL_RIGHT)
+ match_flags |= LDLM_MATCH_RIGHT;
+
/*
* It is fine to match any group lock since there could be only one
* with a uniq gid and it conflicts with all other lock modes too
*/
again:
- mode = osc_match_base(osc_export(obj), resname, LDLM_EXTENT, policy,
- LCK_PR | LCK_PW | LCK_GROUP, &flags, obj, &lockh,
- dap_flags & OSC_DAP_FL_CANCELING);
+ mode = osc_match_base(env, osc_export(obj), resname, LDLM_EXTENT,
+ policy, LCK_PR | LCK_PW | LCK_GROUP, &flags,
+ obj, &lockh, match_flags);
if (mode != 0) {
lock = ldlm_handle2lock(&lockh);
/* RACE: the lock is cancelled so let's try again */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff