struct kmem_cache *ldlm_resource_slab, *ldlm_lock_slab;
struct kmem_cache *ldlm_interval_tree_slab;
+struct kmem_cache *ldlm_inodebits_slab;
int ldlm_srv_namespace_nr = 0;
int ldlm_cli_namespace_nr = 0;
int err;
if (strncmp(buffer, "clear", 5) == 0) {
- CDEBUG(D_DLMTRACE,
- "dropping all unused locks from namespace %s\n",
- ldlm_ns_name(ns));
- if (ns_connect_lru_resize(ns)) {
+ CDEBUG(D_DLMTRACE,
+ "dropping all unused locks from namespace %s\n",
+ ldlm_ns_name(ns));
+ if (ns_connect_lru_resize(ns)) {
/* Try to cancel all @ns_nr_unused locks. */
ldlm_cancel_lru(ns, ns->ns_nr_unused, 0,
LDLM_LRU_FLAG_PASSED |
err = kstrtoul(buffer, 10, &tmp);
if (err != 0) {
CERROR("lru_size: invalid value written\n");
- return -EINVAL;
- }
+ return -EINVAL;
+ }
lru_resize = (tmp == 0);
if (ns_connect_lru_resize(ns)) {
ldlm_ns_name(ns));
ns->ns_connect_flags &= ~OBD_CONNECT_LRU_RESIZE;
}
- } else {
+ } else {
CDEBUG(D_DLMTRACE,
"changing namespace %s max_unused from %u to %u\n",
ldlm_ns_name(ns), ns->ns_max_unused,
/* Make sure that LRU resize was originally supported before
* turning it on here.
*/
- if (lru_resize &&
- (ns->ns_orig_connect_flags & OBD_CONNECT_LRU_RESIZE)) {
- CDEBUG(D_DLMTRACE,
- "enable lru_resize for namespace %s\n",
- ldlm_ns_name(ns));
- ns->ns_connect_flags |= OBD_CONNECT_LRU_RESIZE;
- }
- }
+ if (lru_resize &&
+ (ns->ns_orig_connect_flags & OBD_CONNECT_LRU_RESIZE)) {
+ CDEBUG(D_DLMTRACE,
+ "enable lru_resize for namespace %s\n",
+ ldlm_ns_name(ns));
+ ns->ns_connect_flags |= OBD_CONNECT_LRU_RESIZE;
+ }
+ }
- return count;
+ return count;
}
LUSTRE_RW_ATTR(lru_size);
}
LUSTRE_RW_ATTR(early_lock_cancel);
+static ssize_t dirty_age_limit_show(struct kobject *kobj,
+ struct attribute *attr, char *buf)
+{
+ struct ldlm_namespace *ns = container_of(kobj, struct ldlm_namespace,
+ ns_kobj);
+
+ return sprintf(buf, "%llu\n", ns->ns_dirty_age_limit);
+}
+
+static ssize_t dirty_age_limit_store(struct kobject *kobj,
+ struct attribute *attr,
+ const char *buffer, size_t count)
+{
+ struct ldlm_namespace *ns = container_of(kobj, struct ldlm_namespace,
+ ns_kobj);
+ unsigned long long tmp;
+
+ if (kstrtoull(buffer, 10, &tmp))
+ return -EINVAL;
+
+ ns->ns_dirty_age_limit = tmp;
+
+ return count;
+}
+LUSTRE_RW_ATTR(dirty_age_limit);
+
#ifdef HAVE_SERVER_SUPPORT
static ssize_t ctime_age_limit_show(struct kobject *kobj,
struct attribute *attr, char *buf)
&lustre_attr_lru_size.attr,
&lustre_attr_lru_max_age.attr,
&lustre_attr_early_lock_cancel.attr,
+ &lustre_attr_dirty_age_limit.attr,
#ifdef HAVE_SERVER_SUPPORT
&lustre_attr_ctime_age_limit.attr,
&lustre_attr_lock_timeouts.attr,
static void ldlm_namespace_debugfs_unregister(struct ldlm_namespace *ns)
{
if (IS_ERR_OR_NULL(ns->ns_debugfs_entry))
- CERROR("dlm namespace %s has no procfs dir?\n",
- ldlm_ns_name(ns));
+ CERROR("dlm namespace %s has no procfs dir?\n",
+ ldlm_ns_name(ns));
else
ldebugfs_remove(&ns->ns_debugfs_entry);
#undef MAX_STRING_SIZE
static unsigned ldlm_res_hop_hash(struct cfs_hash *hs,
- const void *key, unsigned mask)
+ const void *key, unsigned int mask)
{
- const struct ldlm_res_id *id = key;
- unsigned val = 0;
- unsigned i;
+ const struct ldlm_res_id *id = key;
+ unsigned int val = 0;
+ unsigned int i;
- for (i = 0; i < RES_NAME_SIZE; i++)
- val += id->name[i];
- return val & mask;
+ for (i = 0; i < RES_NAME_SIZE; i++)
+ val += id->name[i];
+ return val & mask;
}
static unsigned ldlm_res_hop_fid_hash(struct cfs_hash *hs,
const void *key, unsigned mask)
{
- const struct ldlm_res_id *id = key;
- struct lu_fid fid;
- __u32 hash;
- __u32 val;
+ const struct ldlm_res_id *id = key;
+ struct lu_fid fid;
+ __u32 hash;
+ __u32 val;
- fid.f_seq = id->name[LUSTRE_RES_ID_SEQ_OFF];
- fid.f_oid = (__u32)id->name[LUSTRE_RES_ID_VER_OID_OFF];
- fid.f_ver = (__u32)(id->name[LUSTRE_RES_ID_VER_OID_OFF] >> 32);
+ fid.f_seq = id->name[LUSTRE_RES_ID_SEQ_OFF];
+ fid.f_oid = (__u32)id->name[LUSTRE_RES_ID_VER_OID_OFF];
+ fid.f_ver = (__u32)(id->name[LUSTRE_RES_ID_VER_OID_OFF] >> 32);
hash = fid_flatten32(&fid);
hash += (hash >> 4) + (hash << 12); /* mixing oid and seq */
static void *ldlm_res_hop_key(struct hlist_node *hnode)
{
- struct ldlm_resource *res;
+ struct ldlm_resource *res;
res = hlist_entry(hnode, struct ldlm_resource, lr_hash);
- return &res->lr_name;
+ return &res->lr_name;
}
static int ldlm_res_hop_keycmp(const void *key, struct hlist_node *hnode)
{
- struct ldlm_resource *res;
+ struct ldlm_resource *res;
res = hlist_entry(hnode, struct ldlm_resource, lr_hash);
- return ldlm_res_eq((const struct ldlm_res_id *)key,
- (const struct ldlm_res_id *)&res->lr_name);
+ return ldlm_res_eq((const struct ldlm_res_id *)key,
+ (const struct ldlm_res_id *)&res->lr_name);
}
static void *ldlm_res_hop_object(struct hlist_node *hnode)
static void
ldlm_res_hop_get_locked(struct cfs_hash *hs, struct hlist_node *hnode)
{
- struct ldlm_resource *res;
+ struct ldlm_resource *res;
res = hlist_entry(hnode, struct ldlm_resource, lr_hash);
- ldlm_resource_getref(res);
+ ldlm_resource_getref(res);
}
static void ldlm_res_hop_put(struct cfs_hash *hs, struct hlist_node *hnode)
{
- struct ldlm_resource *res;
+ struct ldlm_resource *res;
res = hlist_entry(hnode, struct ldlm_resource, lr_hash);
- ldlm_resource_putref(res);
+ ldlm_resource_putref(res);
}
static struct cfs_hash_ops ldlm_ns_hash_ops = {
- .hs_hash = ldlm_res_hop_hash,
- .hs_key = ldlm_res_hop_key,
- .hs_keycmp = ldlm_res_hop_keycmp,
- .hs_keycpy = NULL,
- .hs_object = ldlm_res_hop_object,
- .hs_get = ldlm_res_hop_get_locked,
- .hs_put = ldlm_res_hop_put
+ .hs_hash = ldlm_res_hop_hash,
+ .hs_key = ldlm_res_hop_key,
+ .hs_keycmp = ldlm_res_hop_keycmp,
+ .hs_keycpy = NULL,
+ .hs_object = ldlm_res_hop_object,
+ .hs_get = ldlm_res_hop_get_locked,
+ .hs_put = ldlm_res_hop_put
};
static struct cfs_hash_ops ldlm_ns_fid_hash_ops = {
- .hs_hash = ldlm_res_hop_fid_hash,
- .hs_key = ldlm_res_hop_key,
- .hs_keycmp = ldlm_res_hop_keycmp,
- .hs_keycpy = NULL,
- .hs_object = ldlm_res_hop_object,
- .hs_get = ldlm_res_hop_get_locked,
- .hs_put = ldlm_res_hop_put
+ .hs_hash = ldlm_res_hop_fid_hash,
+ .hs_key = ldlm_res_hop_key,
+ .hs_keycmp = ldlm_res_hop_keycmp,
+ .hs_keycpy = NULL,
+ .hs_object = ldlm_res_hop_object,
+ .hs_get = ldlm_res_hop_get_locked,
+ .hs_put = ldlm_res_hop_put
};
typedef struct ldlm_ns_hash_def {
static struct ldlm_ns_hash_def ldlm_ns_hash_defs[] =
{
- {
- .nsd_type = LDLM_NS_TYPE_MDC,
- .nsd_bkt_bits = 11,
- .nsd_all_bits = 16,
- .nsd_hops = &ldlm_ns_fid_hash_ops,
- },
- {
- .nsd_type = LDLM_NS_TYPE_MDT,
- .nsd_bkt_bits = 14,
- .nsd_all_bits = 21,
- .nsd_hops = &ldlm_ns_fid_hash_ops,
- },
- {
- .nsd_type = LDLM_NS_TYPE_OSC,
- .nsd_bkt_bits = 8,
- .nsd_all_bits = 12,
- .nsd_hops = &ldlm_ns_hash_ops,
- },
- {
- .nsd_type = LDLM_NS_TYPE_OST,
- .nsd_bkt_bits = 11,
- .nsd_all_bits = 17,
- .nsd_hops = &ldlm_ns_hash_ops,
- },
- {
- .nsd_type = LDLM_NS_TYPE_MGC,
- .nsd_bkt_bits = 4,
- .nsd_all_bits = 4,
- .nsd_hops = &ldlm_ns_hash_ops,
- },
- {
- .nsd_type = LDLM_NS_TYPE_MGT,
- .nsd_bkt_bits = 4,
- .nsd_all_bits = 4,
- .nsd_hops = &ldlm_ns_hash_ops,
- },
- {
- .nsd_type = LDLM_NS_TYPE_UNKNOWN,
- },
+ {
+ .nsd_type = LDLM_NS_TYPE_MDC,
+ .nsd_bkt_bits = 11,
+ .nsd_all_bits = 16,
+ .nsd_hops = &ldlm_ns_fid_hash_ops,
+ },
+ {
+ .nsd_type = LDLM_NS_TYPE_MDT,
+ .nsd_bkt_bits = 14,
+ .nsd_all_bits = 21,
+ .nsd_hops = &ldlm_ns_fid_hash_ops,
+ },
+ {
+ .nsd_type = LDLM_NS_TYPE_OSC,
+ .nsd_bkt_bits = 8,
+ .nsd_all_bits = 12,
+ .nsd_hops = &ldlm_ns_hash_ops,
+ },
+ {
+ .nsd_type = LDLM_NS_TYPE_OST,
+ .nsd_bkt_bits = 11,
+ .nsd_all_bits = 17,
+ .nsd_hops = &ldlm_ns_hash_ops,
+ },
+ {
+ .nsd_type = LDLM_NS_TYPE_MGC,
+ .nsd_bkt_bits = 4,
+ .nsd_all_bits = 4,
+ .nsd_hops = &ldlm_ns_hash_ops,
+ },
+ {
+ .nsd_type = LDLM_NS_TYPE_MGT,
+ .nsd_bkt_bits = 4,
+ .nsd_all_bits = 4,
+ .nsd_hops = &ldlm_ns_hash_ops,
+ },
+ {
+ .nsd_type = LDLM_NS_TYPE_UNKNOWN,
+ },
};
/**
struct cfs_hash_bd bd;
int idx;
int rc;
+
ENTRY;
+ LASSERT(obd != NULL);
- LASSERT(obd != NULL);
-
- rc = ldlm_get_ref();
- if (rc) {
- CERROR("ldlm_get_ref failed: %d\n", rc);
- RETURN(NULL);
- }
-
- for (idx = 0;;idx++) {
- nsd = &ldlm_ns_hash_defs[idx];
- if (nsd->nsd_type == LDLM_NS_TYPE_UNKNOWN) {
- CERROR("Unknown type %d for ns %s\n", ns_type, name);
- GOTO(out_ref, NULL);
- }
-
- if (nsd->nsd_type == ns_type)
- break;
- }
-
- OBD_ALLOC_PTR(ns);
- if (!ns)
- GOTO(out_ref, NULL);
-
- ns->ns_rs_hash = cfs_hash_create(name,
- nsd->nsd_all_bits, nsd->nsd_all_bits,
- nsd->nsd_bkt_bits, sizeof(*nsb),
- CFS_HASH_MIN_THETA,
- CFS_HASH_MAX_THETA,
- nsd->nsd_hops,
- CFS_HASH_DEPTH |
- CFS_HASH_BIGNAME |
- CFS_HASH_SPIN_BKTLOCK |
- CFS_HASH_NO_ITEMREF);
- if (ns->ns_rs_hash == NULL)
- GOTO(out_ns, NULL);
-
- cfs_hash_for_each_bucket(ns->ns_rs_hash, &bd, idx) {
- nsb = cfs_hash_bd_extra_get(ns->ns_rs_hash, &bd);
- at_init(&nsb->nsb_at_estimate, ldlm_enqueue_min, 0);
- nsb->nsb_namespace = ns;
+ rc = ldlm_get_ref();
+ if (rc) {
+ CERROR("ldlm_get_ref failed: %d\n", rc);
+ RETURN(NULL);
+ }
+
+ for (idx = 0; ; idx++) {
+ nsd = &ldlm_ns_hash_defs[idx];
+ if (nsd->nsd_type == LDLM_NS_TYPE_UNKNOWN) {
+ CERROR("Unknown type %d for ns %s\n", ns_type, name);
+ GOTO(out_ref, NULL);
+ }
+
+ if (nsd->nsd_type == ns_type)
+ break;
+ }
+
+ OBD_ALLOC_PTR(ns);
+ if (!ns)
+ GOTO(out_ref, NULL);
+
+ ns->ns_rs_hash = cfs_hash_create(name,
+ nsd->nsd_all_bits, nsd->nsd_all_bits,
+ nsd->nsd_bkt_bits, sizeof(*nsb),
+ CFS_HASH_MIN_THETA,
+ CFS_HASH_MAX_THETA,
+ nsd->nsd_hops,
+ CFS_HASH_DEPTH |
+ CFS_HASH_BIGNAME |
+ CFS_HASH_SPIN_BKTLOCK |
+ CFS_HASH_NO_ITEMREF);
+ if (ns->ns_rs_hash == NULL)
+ GOTO(out_ns, NULL);
+
+ cfs_hash_for_each_bucket(ns->ns_rs_hash, &bd, idx) {
+ nsb = cfs_hash_bd_extra_get(ns->ns_rs_hash, &bd);
+ at_init(&nsb->nsb_at_estimate, ldlm_enqueue_min, 0);
+ nsb->nsb_namespace = ns;
nsb->nsb_reclaim_start = 0;
- }
+ }
- ns->ns_obd = obd;
- ns->ns_appetite = apt;
- ns->ns_client = client;
+ ns->ns_obd = obd;
+ ns->ns_appetite = apt;
+ ns->ns_client = client;
+ ns->ns_name = kstrdup(name, GFP_KERNEL);
+ if (!ns->ns_name)
+ goto out_hash;
INIT_LIST_HEAD(&ns->ns_list_chain);
INIT_LIST_HEAD(&ns->ns_unused_list);
ns->ns_contention_time = NS_DEFAULT_CONTENTION_SECONDS;
ns->ns_contended_locks = NS_DEFAULT_CONTENDED_LOCKS;
- ns->ns_max_parallel_ast = LDLM_DEFAULT_PARALLEL_AST_LIMIT;
- ns->ns_nr_unused = 0;
- ns->ns_max_unused = LDLM_DEFAULT_LRU_SIZE;
+ ns->ns_max_parallel_ast = LDLM_DEFAULT_PARALLEL_AST_LIMIT;
+ ns->ns_nr_unused = 0;
+ ns->ns_max_unused = LDLM_DEFAULT_LRU_SIZE;
ns->ns_max_age = ktime_set(LDLM_DEFAULT_MAX_ALIVE, 0);
- ns->ns_ctime_age_limit = LDLM_CTIME_AGE_LIMIT;
- ns->ns_timeouts = 0;
- ns->ns_orig_connect_flags = 0;
- ns->ns_connect_flags = 0;
- ns->ns_stopping = 0;
+ ns->ns_ctime_age_limit = LDLM_CTIME_AGE_LIMIT;
+ ns->ns_dirty_age_limit = LDLM_DIRTY_AGE_LIMIT;
+ ns->ns_timeouts = 0;
+ ns->ns_orig_connect_flags = 0;
+ ns->ns_connect_flags = 0;
+ ns->ns_stopping = 0;
ns->ns_reclaim_start = 0;
+ ns->ns_last_pos = &ns->ns_unused_list;
rc = ldlm_namespace_sysfs_register(ns);
if (rc) {
GOTO(out_sysfs, rc);
}
- idx = ldlm_namespace_nr_read(client);
- rc = ldlm_pool_init(&ns->ns_pool, ns, idx, client);
- if (rc) {
- CERROR("Can't initialize lock pool, rc %d\n", rc);
- GOTO(out_proc, rc);
- }
+ idx = ldlm_namespace_nr_read(client);
+ rc = ldlm_pool_init(&ns->ns_pool, ns, idx, client);
+ if (rc) {
+ CERROR("Can't initialize lock pool, rc %d\n", rc);
+ GOTO(out_proc, rc);
+ }
- ldlm_namespace_register(ns, client);
- RETURN(ns);
+ ldlm_namespace_register(ns, client);
+ RETURN(ns);
out_proc:
ldlm_namespace_debugfs_unregister(ns);
out_sysfs:
ldlm_namespace_sysfs_unregister(ns);
ldlm_namespace_cleanup(ns, 0);
out_hash:
- cfs_hash_putref(ns->ns_rs_hash);
+ kfree(ns->ns_name);
+ cfs_hash_putref(ns->ns_rs_hash);
out_ns:
OBD_FREE_PTR(ns);
out_ref:
- ldlm_put_ref();
- RETURN(NULL);
+ ldlm_put_ref();
+ RETURN(NULL);
}
EXPORT_SYMBOL(ldlm_namespace_new);
-extern struct ldlm_lock *ldlm_lock_get(struct ldlm_lock *lock);
-
/**
* Cancel and destroy all locks on a resource.
*
int rc = 0, client = ns_is_client(ldlm_res_to_ns(res));
bool local_only = !!(flags & LDLM_FL_LOCAL_ONLY);
- do {
- struct ldlm_lock *lock = NULL;
+ do {
+ struct ldlm_lock *lock = NULL;
/* First, we look for non-cleaned-yet lock
* all cleaned locks are marked by CLEANED flag. */
break;
}
- if (lock == NULL) {
- unlock_res(res);
- break;
- }
+ if (lock == NULL) {
+ unlock_res(res);
+ break;
+ }
- /* Set CBPENDING so nothing in the cancellation path
+ /* Set CBPENDING so nothing in the cancellation path
* can match this lock. */
ldlm_set_cbpending(lock);
ldlm_set_failed(lock);
- lock->l_flags |= flags;
+ lock->l_flags |= flags;
- /* ... without sending a CANCEL message for local_only. */
- if (local_only)
+ /* ... without sending a CANCEL message for local_only. */
+ if (local_only)
ldlm_set_local_only(lock);
- if (local_only && (lock->l_readers || lock->l_writers)) {
- /* This is a little bit gross, but much better than the
- * alternative: pretend that we got a blocking AST from
- * the server, so that when the lock is decref'd, it
- * will go away ... */
- unlock_res(res);
- LDLM_DEBUG(lock, "setting FL_LOCAL_ONLY");
+ if (local_only && (lock->l_readers || lock->l_writers)) {
+ /*
+ * This is a little bit gross, but much better than the
+ * alternative: pretend that we got a blocking AST from
+ * the server, so that when the lock is decref'd, it
+ * will go away ...
+ */
+ unlock_res(res);
+ LDLM_DEBUG(lock, "setting FL_LOCAL_ONLY");
if (lock->l_flags & LDLM_FL_FAIL_LOC) {
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(cfs_time_seconds(4));
set_current_state(TASK_RUNNING);
}
- if (lock->l_completion_ast)
+ if (lock->l_completion_ast)
lock->l_completion_ast(lock,
LDLM_FL_FAILED, NULL);
- LDLM_LOCK_RELEASE(lock);
- continue;
- }
+ LDLM_LOCK_RELEASE(lock);
+ continue;
+ }
- if (client) {
- struct lustre_handle lockh;
+ if (client) {
+ struct lustre_handle lockh;
- unlock_res(res);
- ldlm_lock2handle(lock, &lockh);
+ unlock_res(res);
+ ldlm_lock2handle(lock, &lockh);
rc = ldlm_cli_cancel(&lockh, LCF_LOCAL);
- if (rc)
- CERROR("ldlm_cli_cancel: %d\n", rc);
- } else {
- unlock_res(res);
- LDLM_DEBUG(lock, "Freeing a lock still held by a "
- "client node");
+ if (rc)
+ CERROR("ldlm_cli_cancel: %d\n", rc);
+ } else {
+ unlock_res(res);
+ LDLM_DEBUG(lock,
+ "Freeing a lock still held by a client node");
ldlm_lock_cancel(lock);
- }
- LDLM_LOCK_RELEASE(lock);
- } while (1);
+ }
+ LDLM_LOCK_RELEASE(lock);
+ } while (1);
}
static int ldlm_resource_clean(struct cfs_hash *hs, struct cfs_hash_bd *bd,
ldlm_ns_name(ldlm_res_to_ns(res)), PLDLMRES(res), res,
atomic_read(&res->lr_refcount) - 1);
- ldlm_resource_dump(D_ERROR, res);
+ /* Use D_NETERROR since it is in the default mask */
+ ldlm_resource_dump(D_NETERROR, res);
unlock_res(res);
return 0;
}
*/
int ldlm_namespace_cleanup(struct ldlm_namespace *ns, __u64 flags)
{
- if (ns == NULL) {
- CDEBUG(D_INFO, "NULL ns, skipping cleanup\n");
- return ELDLM_OK;
- }
+ if (ns == NULL) {
+ CDEBUG(D_INFO, "NULL ns, skipping cleanup\n");
+ return ELDLM_OK;
+ }
cfs_hash_for_each_nolock(ns->ns_rs_hash, ldlm_resource_clean,
&flags, 0);
ldlm_ns_name(ns), atomic_read(&ns->ns_bref));
force_wait:
if (force)
- lwi = LWI_TIMEOUT(msecs_to_jiffies(obd_timeout *
- MSEC_PER_SEC) / 4, NULL, NULL);
+ lwi = LWI_TIMEOUT(cfs_time_seconds(1) / 4,
+ NULL, NULL);
rc = l_wait_event(ns->ns_waitq,
atomic_read(&ns->ns_bref) == 0, &lwi);
struct obd_import *imp,
int force)
{
- int rc;
- ENTRY;
- if (!ns) {
- EXIT;
- return;
- }
+ int rc;
+
+ ENTRY;
+ if (!ns) {
+ EXIT;
+ return;
+ }
spin_lock(&ns->ns_lock);
ns->ns_stopping = 1;
spin_unlock(&ns->ns_lock);
- /*
- * Can fail with -EINTR when force == 0 in which case try harder.
- */
- rc = __ldlm_namespace_free(ns, force);
- if (rc != ELDLM_OK) {
- if (imp) {
- ptlrpc_disconnect_import(imp, 0);
- ptlrpc_invalidate_import(imp);
- }
-
- /*
- * With all requests dropped and the import inactive
- * we are gaurenteed all reference will be dropped.
- */
- rc = __ldlm_namespace_free(ns, 1);
- LASSERT(rc == 0);
- }
- EXIT;
+ /*
+ * Can fail with -EINTR when force == 0 in which case try harder.
+ */
+ rc = __ldlm_namespace_free(ns, force);
+ if (rc != ELDLM_OK) {
+ if (imp) {
+ ptlrpc_disconnect_import(imp, 0);
+ ptlrpc_invalidate_import(imp);
+ }
+
+ /*
+ * With all requests dropped and the import inactive
+ * we are gaurenteed all reference will be dropped.
+ */
+ rc = __ldlm_namespace_free(ns, 1);
+ LASSERT(rc == 0);
+ }
+ EXIT;
}
EXPORT_SYMBOL(ldlm_namespace_free_prior);
*/
void ldlm_namespace_free_post(struct ldlm_namespace *ns)
{
- ENTRY;
- if (!ns) {
- EXIT;
- return;
- }
+ ENTRY;
+ if (!ns) {
+ EXIT;
+ return;
+ }
/* Make sure that nobody can find this ns in its list. */
ldlm_namespace_unregister(ns, ns->ns_client);
ldlm_namespace_debugfs_unregister(ns);
ldlm_namespace_sysfs_unregister(ns);
cfs_hash_putref(ns->ns_rs_hash);
+ kfree(ns->ns_name);
/* Namespace \a ns should be not on list at this time, otherwise
* this will cause issues related to using freed \a ns in poold
- * thread. */
+ * thread.
+ */
LASSERT(list_empty(&ns->ns_list_chain));
OBD_FREE_PTR(ns);
ldlm_put_ref();
* held.
*/
void ldlm_namespace_free(struct ldlm_namespace *ns,
- struct obd_import *imp,
- int force)
+ struct obd_import *imp,
+ int force)
{
- ldlm_namespace_free_prior(ns, imp, force);
- ldlm_namespace_free_post(ns);
+ ldlm_namespace_free_prior(ns, imp, force);
+ ldlm_namespace_free_post(ns);
}
EXPORT_SYMBOL(ldlm_namespace_free);
struct ldlm_namespace, ns_list_chain);
}
+static bool ldlm_resource_extent_new(struct ldlm_resource *res)
+{
+ int idx;
+
+ OBD_SLAB_ALLOC(res->lr_itree, ldlm_interval_tree_slab,
+ sizeof(*res->lr_itree) * LCK_MODE_NUM);
+ if (res->lr_itree == NULL)
+ return false;
+ /* Initialize interval trees for each lock mode. */
+ for (idx = 0; idx < LCK_MODE_NUM; idx++) {
+ res->lr_itree[idx].lit_size = 0;
+ res->lr_itree[idx].lit_mode = 1 << idx;
+ res->lr_itree[idx].lit_root = NULL;
+ }
+ return true;
+}
+
+static bool ldlm_resource_inodebits_new(struct ldlm_resource *res)
+{
+ int i;
+
+ OBD_ALLOC_PTR(res->lr_ibits_queues);
+ if (res->lr_ibits_queues == NULL)
+ return false;
+ for (i = 0; i < MDS_INODELOCK_NUMBITS; i++)
+ INIT_LIST_HEAD(&res->lr_ibits_queues->liq_waiting[i]);
+ return true;
+}
+
/** Create and initialize new resource. */
static struct ldlm_resource *ldlm_resource_new(enum ldlm_type ldlm_type)
{
struct ldlm_resource *res;
- int idx;
+ bool rc;
OBD_SLAB_ALLOC_PTR_GFP(res, ldlm_resource_slab, GFP_NOFS);
if (res == NULL)
return NULL;
- if (ldlm_type == LDLM_EXTENT) {
- OBD_SLAB_ALLOC(res->lr_itree, ldlm_interval_tree_slab,
- sizeof(*res->lr_itree) * LCK_MODE_NUM);
- if (res->lr_itree == NULL) {
- OBD_SLAB_FREE_PTR(res, ldlm_resource_slab);
- return NULL;
- }
- /* Initialize interval trees for each lock mode. */
- for (idx = 0; idx < LCK_MODE_NUM; idx++) {
- res->lr_itree[idx].lit_size = 0;
- res->lr_itree[idx].lit_mode = 1 << idx;
- res->lr_itree[idx].lit_root = NULL;
- }
+ switch (ldlm_type) {
+ case LDLM_EXTENT:
+ rc = ldlm_resource_extent_new(res);
+ break;
+ case LDLM_IBITS:
+ rc = ldlm_resource_inodebits_new(res);
+ break;
+ default:
+ rc = true;
+ break;
+ }
+ if (!rc) {
+ OBD_SLAB_FREE_PTR(res, ldlm_resource_slab);
+ return NULL;
}
INIT_LIST_HEAD(&res->lr_granted);
return res;
}
+static void ldlm_resource_free(struct ldlm_resource *res)
+{
+ if (res->lr_type == LDLM_EXTENT) {
+ if (res->lr_itree != NULL)
+ OBD_SLAB_FREE(res->lr_itree, ldlm_interval_tree_slab,
+ sizeof(*res->lr_itree) * LCK_MODE_NUM);
+ } else if (res->lr_type == LDLM_IBITS) {
+ if (res->lr_ibits_queues != NULL)
+ OBD_FREE_PTR(res->lr_ibits_queues);
+ }
+
+ OBD_SLAB_FREE(res, ldlm_resource_slab, sizeof *res);
+}
+
/**
* Return a reference to resource with given name, creating it if necessary.
* Args: namespace with ns_lock unlocked
__u64 version;
int ns_refcount = 0;
- LASSERT(ns != NULL);
- LASSERT(parent == NULL);
- LASSERT(ns->ns_rs_hash != NULL);
- LASSERT(name->name[0] != 0);
+ LASSERT(ns != NULL);
+ LASSERT(parent == NULL);
+ LASSERT(ns->ns_rs_hash != NULL);
+ LASSERT(name->name[0] != 0);
- cfs_hash_bd_get_and_lock(ns->ns_rs_hash, (void *)name, &bd, 0);
- hnode = cfs_hash_bd_lookup_locked(ns->ns_rs_hash, &bd, (void *)name);
- if (hnode != NULL) {
- cfs_hash_bd_unlock(ns->ns_rs_hash, &bd, 0);
+ cfs_hash_bd_get_and_lock(ns->ns_rs_hash, (void *)name, &bd, 0);
+ hnode = cfs_hash_bd_lookup_locked(ns->ns_rs_hash, &bd, (void *)name);
+ if (hnode != NULL) {
+ cfs_hash_bd_unlock(ns->ns_rs_hash, &bd, 0);
GOTO(found, res);
}
cfs_hash_bd_unlock(ns->ns_rs_hash, &bd, 1);
/* Clean lu_ref for failed resource. */
lu_ref_fini(&res->lr_reference);
- if (res->lr_itree != NULL)
- OBD_SLAB_FREE(res->lr_itree, ldlm_interval_tree_slab,
- sizeof(*res->lr_itree) * LCK_MODE_NUM);
- OBD_SLAB_FREE(res, ldlm_resource_slab, sizeof *res);
+ ldlm_resource_free(res);
found:
res = hlist_entry(hnode, struct ldlm_resource, lr_hash);
return res;
}
/* We won! Let's add the resource. */
- cfs_hash_bd_add_locked(ns->ns_rs_hash, &bd, &res->lr_hash);
+ cfs_hash_bd_add_locked(ns->ns_rs_hash, &bd, &res->lr_hash);
if (cfs_hash_bd_count_get(&bd) == 1)
ns_refcount = ldlm_namespace_get_return(ns);
- cfs_hash_bd_unlock(ns->ns_rs_hash, &bd, 1);
+ cfs_hash_bd_unlock(ns->ns_rs_hash, &bd, 1);
OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_CREATE_RESOURCE, 2);
cfs_hash_bd_unlock(ns->ns_rs_hash, &bd, 1);
if (ns->ns_lvbo && ns->ns_lvbo->lvbo_free)
ns->ns_lvbo->lvbo_free(res);
- if (res->lr_itree != NULL)
- OBD_SLAB_FREE(res->lr_itree, ldlm_interval_tree_slab,
- sizeof(*res->lr_itree) * LCK_MODE_NUM);
- OBD_SLAB_FREE(res, ldlm_resource_slab, sizeof *res);
+ ldlm_resource_free(res);
return 1;
}
return 0;
LASSERT(list_empty(&lock->l_res_link));
list_add_tail(&lock->l_res_link, head);
+
+ if (res->lr_type == LDLM_IBITS)
+ ldlm_inodebits_add_lock(res, head, lock);
}
/**
* Obtain resource description from the lock we are inserting after.
*/
void ldlm_resource_insert_lock_after(struct ldlm_lock *original,
- struct ldlm_lock *new)
+ struct ldlm_lock *new)
{
- struct ldlm_resource *res = original->l_resource;
+ struct ldlm_resource *res = original->l_resource;
- check_res_locked(res);
+ check_res_locked(res);
- ldlm_resource_dump(D_INFO, res);
+ ldlm_resource_dump(D_INFO, res);
LDLM_DEBUG(new, "About to insert this lock after %p: ", original);
if (ldlm_is_destroyed(new)) {
void ldlm_resource_unlink_lock(struct ldlm_lock *lock)
{
- int type = lock->l_resource->lr_type;
-
- check_res_locked(lock->l_resource);
- if (type == LDLM_IBITS || type == LDLM_PLAIN)
- ldlm_unlink_lock_skiplist(lock);
- else if (type == LDLM_EXTENT)
- ldlm_extent_unlink_lock(lock);
+ int type = lock->l_resource->lr_type;
+
+ check_res_locked(lock->l_resource);
+ switch (type) {
+ case LDLM_PLAIN:
+ ldlm_unlink_lock_skiplist(lock);
+ break;
+ case LDLM_EXTENT:
+ ldlm_extent_unlink_lock(lock);
+ break;
+ case LDLM_IBITS:
+ ldlm_inodebits_unlink_lock(lock);
+ break;
+ }
list_del_init(&lock->l_res_link);
}
EXPORT_SYMBOL(ldlm_resource_unlink_lock);
void ldlm_res2desc(struct ldlm_resource *res, struct ldlm_resource_desc *desc)
{
- desc->lr_type = res->lr_type;
- desc->lr_name = res->lr_name;
+ desc->lr_type = res->lr_type;
+ desc->lr_name = res->lr_name;
}
/**
static int ldlm_res_hash_dump(struct cfs_hash *hs, struct cfs_hash_bd *bd,
struct hlist_node *hnode, void *arg)
{
- struct ldlm_resource *res = cfs_hash_object(hs, hnode);
- int level = (int)(unsigned long)arg;
+ struct ldlm_resource *res = cfs_hash_object(hs, hnode);
+ int level = (int)(unsigned long)arg;
- lock_res(res);
- ldlm_resource_dump(level, res);
- unlock_res(res);
+ lock_res(res);
+ ldlm_resource_dump(level, res);
+ unlock_res(res);
- return 0;
+ return 0;
}
/**
CDEBUG(level, "Granted locks (in reverse order):\n");
list_for_each_entry_reverse(lock, &res->lr_granted,
l_res_link) {
- LDLM_DEBUG_LIMIT(level, lock, "###");
- if (!(level & D_CANTMASK) &&
- ++granted > ldlm_dump_granted_max) {
- CDEBUG(level, "only dump %d granted locks to "
- "avoid DDOS.\n", granted);
- break;
- }
- }
- }
+ LDLM_DEBUG_LIMIT(level, lock, "###");
+ if (!(level & D_CANTMASK) &&
+ ++granted > ldlm_dump_granted_max) {
+ CDEBUG(level,
+ "only dump %d granted locks to avoid DDOS.\n",
+ granted);
+ break;
+ }
+ }
+ }
if (!list_empty(&res->lr_waiting)) {
CDEBUG(level, "Waiting locks:\n");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff