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Re-embed multilist_t storage

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This commit partially reverts changes to multilists in PR 7968
(multi-threaded spa-sync()) and adds some cache line alignments to
separate read-only multilists and heavily modified refcount's to
different cache lines.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-by: iXsystems, Inc.
Closes #12158
This commit is contained in:
Alexander Motin 2021-06-10 12:42:31 -04:00 committed by Brian Behlendorf
parent 8dc540ae16
commit 57196f8ae9
12 changed files with 99 additions and 104 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
include/sys/arc_impl.h
View File

@ -74,20 +74,20 @@ typedef struct arc_state {
/*
* list of evictable buffers
*/
multilist_t *arcs_list[ARC_BUFC_NUMTYPES];
multilist_t arcs_list[ARC_BUFC_NUMTYPES];
/*
* supports the "dbufs" kstat
*/
arc_state_type_t arcs_state;
/*
* total amount of evictable data in this state
*/
zfs_refcount_t arcs_esize[ARC_BUFC_NUMTYPES];
zfs_refcount_t arcs_esize[ARC_BUFC_NUMTYPES] ____cacheline_aligned;
/*
* total amount of data in this state; this includes: evictable,
* non-evictable, ARC_BUFC_DATA, and ARC_BUFC_METADATA.
*/
zfs_refcount_t arcs_size;
/*
* supports the "dbufs" kstat
*/
arc_state_type_t arcs_state;
} arc_state_t;
typedef struct arc_callback arc_callback_t;

4
include/sys/dmu_objset.h
View File

@ -153,7 +153,7 @@ struct objset {
/* no lock needed: */
struct dmu_tx *os_synctx; /* XXX sketchy */
zil_header_t os_zil_header;
multilist_t *os_synced_dnodes;
multilist_t os_synced_dnodes;
uint64_t os_flags;
uint64_t os_freed_dnodes;
boolean_t os_rescan_dnodes;
@ -172,7 +172,7 @@ struct objset {
/* Protected by os_lock */
kmutex_t os_lock;
multilist_t *os_dirty_dnodes[TXG_SIZE];
multilist_t os_dirty_dnodes[TXG_SIZE];
list_t os_dnodes;
list_t os_downgraded_dbufs;

2
include/sys/metaslab_impl.h
View File

@ -206,7 +206,7 @@ struct metaslab_class {
* List of all loaded metaslabs in the class, sorted in order of most
* recent use.
*/
multilist_t *mc_metaslab_txg_list;
multilist_t mc_metaslab_txg_list;
metaslab_class_allocator_t mc_allocator[];
};

3
include/sys/multilist.h
View File

@ -71,8 +71,9 @@ struct multilist {
multilist_sublist_index_func_t *ml_index_func;
};
void multilist_create(multilist_t *, size_t, size_t,
multilist_sublist_index_func_t *);
void multilist_destroy(multilist_t *);
multilist_t *multilist_create(size_t, size_t, multilist_sublist_index_func_t *);
void multilist_insert(multilist_t *, void *);
void multilist_remove(multilist_t *, void *);

86
module/zfs/arc.c
View File

@ -2327,7 +2327,7 @@ add_reference(arc_buf_hdr_t *hdr, void *tag)
(state != arc_anon)) {
/* We don't use the L2-only state list. */
if (state != arc_l2c_only) {
multilist_remove(state->arcs_list[arc_buf_type(hdr)],
multilist_remove(&state->arcs_list[arc_buf_type(hdr)],
hdr);
arc_evictable_space_decrement(hdr, state);
}
@ -2361,7 +2361,7 @@ remove_reference(arc_buf_hdr_t *hdr, kmutex_t *hash_lock, void *tag)
*/
if (((cnt = zfs_refcount_remove(&hdr->b_l1hdr.b_refcnt, tag)) == 0) &&
(state != arc_anon)) {
multilist_insert(state->arcs_list[arc_buf_type(hdr)], hdr);
multilist_insert(&state->arcs_list[arc_buf_type(hdr)], hdr);
ASSERT3U(hdr->b_l1hdr.b_bufcnt, >, 0);
arc_evictable_space_increment(hdr, state);
}
@ -2464,7 +2464,7 @@ arc_change_state(arc_state_t *new_state, arc_buf_hdr_t *hdr,
if (refcnt == 0) {
if (old_state != arc_anon && old_state != arc_l2c_only) {
ASSERT(HDR_HAS_L1HDR(hdr));
multilist_remove(old_state->arcs_list[buftype], hdr);
multilist_remove(&old_state->arcs_list[buftype], hdr);
if (GHOST_STATE(old_state)) {
ASSERT0(bufcnt);
@ -2481,7 +2481,7 @@ arc_change_state(arc_state_t *new_state, arc_buf_hdr_t *hdr,
* beforehand.
*/
ASSERT(HDR_HAS_L1HDR(hdr));
multilist_insert(new_state->arcs_list[buftype], hdr);
multilist_insert(&new_state->arcs_list[buftype], hdr);
if (GHOST_STATE(new_state)) {
ASSERT0(bufcnt);
@ -2633,8 +2633,8 @@ arc_change_state(arc_state_t *new_state, arc_buf_hdr_t *hdr,
* L2 headers should never be on the L2 state list since they don't
* have L1 headers allocated.
*/
ASSERT(multilist_is_empty(arc_l2c_only->arcs_list[ARC_BUFC_DATA]) &&
multilist_is_empty(arc_l2c_only->arcs_list[ARC_BUFC_METADATA]));
ASSERT(multilist_is_empty(&arc_l2c_only->arcs_list[ARC_BUFC_DATA]) &&
multilist_is_empty(&arc_l2c_only->arcs_list[ARC_BUFC_METADATA]));
}
void
@ -4205,7 +4205,7 @@ arc_evict_state(arc_state_t *state, uint64_t spa, int64_t bytes,
arc_buf_contents_t type)
{
uint64_t total_evicted = 0;
multilist_t *ml = state->arcs_list[type];
multilist_t *ml = &state->arcs_list[type];
int num_sublists;
arc_buf_hdr_t **markers;
@ -4539,8 +4539,8 @@ arc_evict_meta(uint64_t meta_used)
static arc_buf_contents_t
arc_evict_type(arc_state_t *state)
{
multilist_t *data_ml = state->arcs_list[ARC_BUFC_DATA];
multilist_t *meta_ml = state->arcs_list[ARC_BUFC_METADATA];
multilist_t *data_ml = &state->arcs_list[ARC_BUFC_DATA];
multilist_t *meta_ml = &state->arcs_list[ARC_BUFC_METADATA];
int data_idx = multilist_get_random_index(data_ml);
int meta_idx = multilist_get_random_index(meta_ml);
multilist_sublist_t *data_mls;
@ -7460,44 +7460,44 @@ arc_state_init(void)
arc_mfu_ghost = &ARC_mfu_ghost;
arc_l2c_only = &ARC_l2c_only;
arc_mru->arcs_list[ARC_BUFC_METADATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_mru->arcs_list[ARC_BUFC_METADATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
arc_mru->arcs_list[ARC_BUFC_DATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_mru->arcs_list[ARC_BUFC_DATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
arc_mru_ghost->arcs_list[ARC_BUFC_METADATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_mru_ghost->arcs_list[ARC_BUFC_METADATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
arc_mru_ghost->arcs_list[ARC_BUFC_DATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_mru_ghost->arcs_list[ARC_BUFC_DATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
arc_mfu->arcs_list[ARC_BUFC_METADATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_mfu->arcs_list[ARC_BUFC_METADATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
arc_mfu->arcs_list[ARC_BUFC_DATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_mfu->arcs_list[ARC_BUFC_DATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
arc_mfu_ghost->arcs_list[ARC_BUFC_METADATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_mfu_ghost->arcs_list[ARC_BUFC_METADATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
arc_mfu_ghost->arcs_list[ARC_BUFC_DATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_mfu_ghost->arcs_list[ARC_BUFC_DATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
arc_l2c_only->arcs_list[ARC_BUFC_METADATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_l2c_only->arcs_list[ARC_BUFC_METADATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
arc_l2c_only->arcs_list[ARC_BUFC_DATA] =
multilist_create(sizeof (arc_buf_hdr_t),
multilist_create(&arc_l2c_only->arcs_list[ARC_BUFC_DATA],
sizeof (arc_buf_hdr_t),
offsetof(arc_buf_hdr_t, b_l1hdr.b_arc_node),
arc_state_multilist_index_func);
@ -7563,16 +7563,16 @@ arc_state_fini(void)
zfs_refcount_destroy(&arc_mfu_ghost->arcs_size);
zfs_refcount_destroy(&arc_l2c_only->arcs_size);
multilist_destroy(arc_mru->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(arc_mru_ghost->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(arc_mfu->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(arc_mfu_ghost->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(arc_mru->arcs_list[ARC_BUFC_DATA]);
multilist_destroy(arc_mru_ghost->arcs_list[ARC_BUFC_DATA]);
multilist_destroy(arc_mfu->arcs_list[ARC_BUFC_DATA]);
multilist_destroy(arc_mfu_ghost->arcs_list[ARC_BUFC_DATA]);
multilist_destroy(arc_l2c_only->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(arc_l2c_only->arcs_list[ARC_BUFC_DATA]);
multilist_destroy(&arc_mru->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(&arc_mru_ghost->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(&arc_mfu->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(&arc_mfu_ghost->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(&arc_mru->arcs_list[ARC_BUFC_DATA]);
multilist_destroy(&arc_mru_ghost->arcs_list[ARC_BUFC_DATA]);
multilist_destroy(&arc_mfu->arcs_list[ARC_BUFC_DATA]);
multilist_destroy(&arc_mfu_ghost->arcs_list[ARC_BUFC_DATA]);
multilist_destroy(&arc_l2c_only->arcs_list[ARC_BUFC_METADATA]);
multilist_destroy(&arc_l2c_only->arcs_list[ARC_BUFC_DATA]);
aggsum_fini(&arc_meta_used);
aggsum_fini(&arc_size);
@ -8629,16 +8629,16 @@ l2arc_sublist_lock(int list_num)
switch (list_num) {
case 0:
ml = arc_mfu->arcs_list[ARC_BUFC_METADATA];
ml = &arc_mfu->arcs_list[ARC_BUFC_METADATA];
break;
case 1:
ml = arc_mru->arcs_list[ARC_BUFC_METADATA];
ml = &arc_mru->arcs_list[ARC_BUFC_METADATA];
break;
case 2:
ml = arc_mfu->arcs_list[ARC_BUFC_DATA];
ml = &arc_mfu->arcs_list[ARC_BUFC_DATA];
break;
case 3:
ml = arc_mru->arcs_list[ARC_BUFC_DATA];
ml = &arc_mru->arcs_list[ARC_BUFC_DATA];
break;
default:
return (NULL);

20
module/zfs/dbuf.c
View File

@ -203,8 +203,8 @@ static boolean_t dbuf_evict_thread_exit;
* by those caches' matching enum values (from dbuf_cached_state_t).
*/
typedef struct dbuf_cache {
multilist_t *cache;
zfs_refcount_t size;
multilist_t cache;
zfs_refcount_t size ____cacheline_aligned;
} dbuf_cache_t;
dbuf_cache_t dbuf_caches[DB_CACHE_MAX];
@ -667,9 +667,9 @@ dbuf_cache_above_lowater(void)
static void
dbuf_evict_one(void)
{
int idx = multilist_get_random_index(dbuf_caches[DB_DBUF_CACHE].cache);
int idx = multilist_get_random_index(&dbuf_caches[DB_DBUF_CACHE].cache);
multilist_sublist_t *mls = multilist_sublist_lock(
dbuf_caches[DB_DBUF_CACHE].cache, idx);
&dbuf_caches[DB_DBUF_CACHE].cache, idx);
ASSERT(!MUTEX_HELD(&dbuf_evict_lock));
@ -833,8 +833,8 @@ retry:
dbu_evict_taskq = taskq_create("dbu_evict", 1, defclsyspri, 0, 0, 0);
for (dbuf_cached_state_t dcs = 0; dcs < DB_CACHE_MAX; dcs++) {
dbuf_caches[dcs].cache =
multilist_create(sizeof (dmu_buf_impl_t),
multilist_create(&dbuf_caches[dcs].cache,
sizeof (dmu_buf_impl_t),
offsetof(dmu_buf_impl_t, db_cache_link),
dbuf_cache_multilist_index_func);
zfs_refcount_create(&dbuf_caches[dcs].size);
@ -901,7 +901,7 @@ dbuf_fini(void)
for (dbuf_cached_state_t dcs = 0; dcs < DB_CACHE_MAX; dcs++) {
zfs_refcount_destroy(&dbuf_caches[dcs].size);
multilist_destroy(dbuf_caches[dcs].cache);
multilist_destroy(&dbuf_caches[dcs].cache);
}
if (dbuf_ksp != NULL) {
@ -2757,7 +2757,7 @@ dbuf_destroy(dmu_buf_impl_t *db)
ASSERT(db->db_caching_status == DB_DBUF_CACHE ||
db->db_caching_status == DB_DBUF_METADATA_CACHE);
multilist_remove(dbuf_caches[db->db_caching_status].cache, db);
multilist_remove(&dbuf_caches[db->db_caching_status].cache, db);
(void) zfs_refcount_remove_many(
&dbuf_caches[db->db_caching_status].size,
db->db.db_size, db);
@ -3467,7 +3467,7 @@ dbuf_hold_impl(dnode_t *dn, uint8_t level, uint64_t blkid,
ASSERT(db->db_caching_status == DB_DBUF_CACHE ||
db->db_caching_status == DB_DBUF_METADATA_CACHE);
multilist_remove(dbuf_caches[db->db_caching_status].cache, db);
multilist_remove(&dbuf_caches[db->db_caching_status].cache, db);
(void) zfs_refcount_remove_many(
&dbuf_caches[db->db_caching_status].size,
db->db.db_size, db);
@ -3709,7 +3709,7 @@ dbuf_rele_and_unlock(dmu_buf_impl_t *db, void *tag, boolean_t evicting)
DB_DBUF_METADATA_CACHE : DB_DBUF_CACHE;
db->db_caching_status = dcs;
multilist_insert(dbuf_caches[dcs].cache, db);
multilist_insert(&dbuf_caches[dcs].cache, db);
size = zfs_refcount_add_many(
&dbuf_caches[dcs].size,
db->db.db_size, db);

30
module/zfs/dmu_objset.c
View File

@ -601,7 +601,7 @@ dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
os->os_zil = zil_alloc(os, &os->os_zil_header);
for (i = 0; i < TXG_SIZE; i++) {
os->os_dirty_dnodes[i] = multilist_create(sizeof (dnode_t),
multilist_create(&os->os_dirty_dnodes[i], sizeof (dnode_t),
offsetof(dnode_t, dn_dirty_link[i]),
dnode_multilist_index_func);
}
@ -995,9 +995,8 @@ dmu_objset_evict_done(objset_t *os)
mutex_destroy(&os->os_obj_lock);
mutex_destroy(&os->os_user_ptr_lock);
mutex_destroy(&os->os_upgrade_lock);
for (int i = 0; i < TXG_SIZE; i++) {
multilist_destroy(os->os_dirty_dnodes[i]);
}
for (int i = 0; i < TXG_SIZE; i++)
multilist_destroy(&os->os_dirty_dnodes[i]);
spa_evicting_os_deregister(os->os_spa, os);
kmem_free(os, sizeof (objset_t));
}
@ -1520,7 +1519,7 @@ dmu_objset_sync_dnodes(multilist_sublist_t *list, dmu_tx_t *tx)
* of why this dnode hold is always needed (even when not
* doing user accounting).
*/
multilist_t *newlist = dn->dn_objset->os_synced_dnodes;
multilist_t *newlist = &dn->dn_objset->os_synced_dnodes;
(void) dnode_add_ref(dn, newlist);
multilist_insert(newlist, dn);
@ -1689,17 +1688,16 @@ dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx)
* dn_dirty_link[] of this txg. But it may already
* exist because we call dsl_dataset_sync() twice per txg.
*/
if (os->os_synced_dnodes == NULL) {
os->os_synced_dnodes =
multilist_create(sizeof (dnode_t),
if (os->os_synced_dnodes.ml_sublists == NULL) {
multilist_create(&os->os_synced_dnodes, sizeof (dnode_t),
offsetof(dnode_t, dn_dirty_link[txgoff]),
dnode_multilist_index_func);
} else {
ASSERT3U(os->os_synced_dnodes->ml_offset, ==,
ASSERT3U(os->os_synced_dnodes.ml_offset, ==,
offsetof(dnode_t, dn_dirty_link[txgoff]));
}
ml = os->os_dirty_dnodes[txgoff];
ml = &os->os_dirty_dnodes[txgoff];
num_sublists = multilist_get_num_sublists(ml);
for (int i = 0; i < num_sublists; i++) {
if (multilist_sublist_is_empty_idx(ml, i))
@ -1738,7 +1736,7 @@ dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx)
boolean_t
dmu_objset_is_dirty(objset_t *os, uint64_t txg)
{
return (!multilist_is_empty(os->os_dirty_dnodes[txg & TXG_MASK]));
return (!multilist_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]));
}
static file_info_cb_t *file_cbs[DMU_OST_NUMTYPES];
@ -1949,7 +1947,7 @@ userquota_updates_task(void *arg)
userquota_cache_t cache = { { 0 } };
multilist_sublist_t *list =
multilist_sublist_lock(os->os_synced_dnodes, uua->uua_sublist_idx);
multilist_sublist_lock(&os->os_synced_dnodes, uua->uua_sublist_idx);
ASSERT(multilist_sublist_head(list) == NULL ||
dmu_objset_userused_enabled(os));
@ -2006,7 +2004,7 @@ userquota_updates_task(void *arg)
mutex_exit(&dn->dn_mtx);
multilist_sublist_remove(list, dn);
dnode_rele(dn, os->os_synced_dnodes);
dnode_rele(dn, &os->os_synced_dnodes);
}
do_userquota_cacheflush(os, &cache, tx);
multilist_sublist_unlock(list);
@ -2032,12 +2030,12 @@ dnode_rele_task(void *arg)
objset_t *os = uua->uua_os;
multilist_sublist_t *list =
multilist_sublist_lock(os->os_synced_dnodes, uua->uua_sublist_idx);
multilist_sublist_lock(&os->os_synced_dnodes, uua->uua_sublist_idx);
dnode_t *dn;
while ((dn = multilist_sublist_head(list)) != NULL) {
multilist_sublist_remove(list, dn);
dnode_rele(dn, os->os_synced_dnodes);
dnode_rele(dn, &os->os_synced_dnodes);
}
multilist_sublist_unlock(list);
kmem_free(uua, sizeof (*uua));
@ -2093,7 +2091,7 @@ dmu_objset_sync_done(objset_t *os, dmu_tx_t *tx)
{
boolean_t need_userquota = dmu_objset_do_userquota_updates_prep(os, tx);
int num_sublists = multilist_get_num_sublists(os->os_synced_dnodes);
int num_sublists = multilist_get_num_sublists(&os->os_synced_dnodes);
for (int i = 0; i < num_sublists; i++) {
userquota_updates_arg_t *uua =
kmem_alloc(sizeof (*uua), KM_SLEEP);

2
module/zfs/dnode.c
View File

@ -1671,7 +1671,7 @@ dnode_setdirty(dnode_t *dn, dmu_tx_t *tx)
*/
dmu_objset_userquota_get_ids(dn, B_TRUE, tx);
multilist_t *dirtylist = os->os_dirty_dnodes[txg & TXG_MASK];
multilist_t *dirtylist = &os->os_dirty_dnodes[txg & TXG_MASK];
multilist_sublist_t *mls = multilist_sublist_lock_obj(dirtylist, dn);
/*

3
module/zfs/dsl_dataset.c
View File

@ -2267,8 +2267,7 @@ dsl_dataset_sync_done(dsl_dataset_t *ds, dmu_tx_t *tx)
dsl_bookmark_sync_done(ds, tx);
multilist_destroy(os->os_synced_dnodes);
os->os_synced_dnodes = NULL;
multilist_destroy(&os->os_synced_dnodes);
if (os->os_encrypted)
os->os_next_write_raw[tx->tx_txg & TXG_MASK] = B_FALSE;

3
module/zfs/dsl_pool.c
View File

@ -568,8 +568,7 @@ dsl_pool_sync_mos(dsl_pool_t *dp, dmu_tx_t *tx)
VERIFY0(zio_wait(zio));
dmu_objset_sync_done(dp->dp_meta_objset, tx);
taskq_wait(dp->dp_sync_taskq);
multilist_destroy(dp->dp_meta_objset->os_synced_dnodes);
dp->dp_meta_objset->os_synced_dnodes = NULL;
multilist_destroy(&dp->dp_meta_objset->os_synced_dnodes);
dprintf_bp(&dp->dp_meta_rootbp, "meta objset rootbp is %s", "");
spa_set_rootblkptr(dp->dp_spa, &dp->dp_meta_rootbp);

24
module/zfs/metaslab.c
View File

@ -416,7 +416,7 @@ metaslab_class_create(spa_t *spa, metaslab_ops_t *ops)
mc->mc_spa = spa;
mc->mc_ops = ops;
mutex_init(&mc->mc_lock, NULL, MUTEX_DEFAULT, NULL);
mc->mc_metaslab_txg_list = multilist_create(sizeof (metaslab_t),
multilist_create(&mc->mc_metaslab_txg_list, sizeof (metaslab_t),
offsetof(metaslab_t, ms_class_txg_node), metaslab_idx_func);
for (int i = 0; i < spa->spa_alloc_count; i++) {
metaslab_class_allocator_t *mca = &mc->mc_allocator[i];
@ -443,7 +443,7 @@ metaslab_class_destroy(metaslab_class_t *mc)
zfs_refcount_destroy(&mca->mca_alloc_slots);
}
mutex_destroy(&mc->mc_lock);
multilist_destroy(mc->mc_metaslab_txg_list);
multilist_destroy(&mc->mc_metaslab_txg_list);
kmem_free(mc, offsetof(metaslab_class_t,
mc_allocator[spa->spa_alloc_count]));
}
@ -639,7 +639,7 @@ metaslab_class_expandable_space(metaslab_class_t *mc)
void
metaslab_class_evict_old(metaslab_class_t *mc, uint64_t txg)
{
multilist_t *ml = mc->mc_metaslab_txg_list;
multilist_t *ml = &mc->mc_metaslab_txg_list;
for (int i = 0; i < multilist_get_num_sublists(ml); i++) {
multilist_sublist_t *mls = multilist_sublist_lock(ml, i);
metaslab_t *msp = multilist_sublist_head(mls);
@ -1139,7 +1139,7 @@ metaslab_group_remove(metaslab_group_t *mg, metaslab_t *msp)
metaslab_class_t *mc = msp->ms_group->mg_class;
multilist_sublist_t *mls =
multilist_sublist_lock_obj(mc->mc_metaslab_txg_list, msp);
multilist_sublist_lock_obj(&mc->mc_metaslab_txg_list, msp);
if (multilist_link_active(&msp->ms_class_txg_node))
multilist_sublist_remove(mls, msp);
multilist_sublist_unlock(mls);
@ -2175,20 +2175,20 @@ metaslab_potentially_evict(metaslab_class_t *mc)
uint64_t size = spl_kmem_cache_entry_size(zfs_btree_leaf_cache);
int tries = 0;
for (; allmem * zfs_metaslab_mem_limit / 100 < inuse * size &&
tries < multilist_get_num_sublists(mc->mc_metaslab_txg_list) * 2;
tries < multilist_get_num_sublists(&mc->mc_metaslab_txg_list) * 2;
tries++) {
unsigned int idx = multilist_get_random_index(
mc->mc_metaslab_txg_list);
&mc->mc_metaslab_txg_list);
multilist_sublist_t *mls =
multilist_sublist_lock(mc->mc_metaslab_txg_list, idx);
multilist_sublist_lock(&mc->mc_metaslab_txg_list, idx);
metaslab_t *msp = multilist_sublist_head(mls);
multilist_sublist_unlock(mls);
while (msp != NULL && allmem * zfs_metaslab_mem_limit / 100 <
inuse * size) {
VERIFY3P(mls, ==, multilist_sublist_lock(
mc->mc_metaslab_txg_list, idx));
&mc->mc_metaslab_txg_list, idx));
ASSERT3U(idx, ==,
metaslab_idx_func(mc->mc_metaslab_txg_list, msp));
metaslab_idx_func(&mc->mc_metaslab_txg_list, msp));
if (!multilist_link_active(&msp->ms_class_txg_node)) {
multilist_sublist_unlock(mls);
@ -2535,7 +2535,7 @@ metaslab_unload(metaslab_t *msp)
if (msp->ms_group != NULL) {
metaslab_class_t *mc = msp->ms_group->mg_class;
multilist_sublist_t *mls =
multilist_sublist_lock_obj(mc->mc_metaslab_txg_list, msp);
multilist_sublist_lock_obj(&mc->mc_metaslab_txg_list, msp);
if (multilist_link_active(&msp->ms_class_txg_node))
multilist_sublist_remove(mls, msp);
multilist_sublist_unlock(mls);
@ -2600,7 +2600,7 @@ metaslab_set_selected_txg(metaslab_t *msp, uint64_t txg)
ASSERT(MUTEX_HELD(&msp->ms_lock));
metaslab_class_t *mc = msp->ms_group->mg_class;
multilist_sublist_t *mls =
multilist_sublist_lock_obj(mc->mc_metaslab_txg_list, msp);
multilist_sublist_lock_obj(&mc->mc_metaslab_txg_list, msp);
if (multilist_link_active(&msp->ms_class_txg_node))
multilist_sublist_remove(mls, msp);
msp->ms_selected_txg = txg;
@ -5682,7 +5682,7 @@ metaslab_claim_concrete(vdev_t *vd, uint64_t offset, uint64_t size,
if (spa_writeable(spa)) { /* don't dirty if we're zdb(8) */
metaslab_class_t *mc = msp->ms_group->mg_class;
multilist_sublist_t *mls =
multilist_sublist_lock_obj(mc->mc_metaslab_txg_list, msp);
multilist_sublist_lock_obj(&mc->mc_metaslab_txg_list, msp);
if (!multilist_link_active(&msp->ms_class_txg_node)) {
msp->ms_selected_txg = txg;
multilist_sublist_insert_head(mls, msp);

14
module/zfs/multilist.c
View File

@ -68,8 +68,8 @@ multilist_d2l(multilist_t *ml, void *obj)
* requirement, but a general rule of thumb in order to garner the
* best multi-threaded performance out of the data structure.
*/
static multilist_t *
multilist_create_impl(size_t size, size_t offset,
static void
multilist_create_impl(multilist_t *ml, size_t size, size_t offset,
unsigned int num, multilist_sublist_index_func_t *index_func)
{
ASSERT3U(size, >, 0);
@ -77,7 +77,6 @@ multilist_create_impl(size_t size, size_t offset,
ASSERT3U(num, >, 0);
ASSERT3P(index_func, !=, NULL);
multilist_t *ml = kmem_alloc(sizeof (*ml), KM_SLEEP);
ml->ml_offset = offset;
ml->ml_num_sublists = num;
ml->ml_index_func = index_func;
@ -92,7 +91,6 @@ multilist_create_impl(size_t size, size_t offset,
mutex_init(&mls->mls_lock, NULL, MUTEX_NOLOCKDEP, NULL);
list_create(&mls->mls_list, size, offset);
}
return (ml);
}
/*
@ -103,8 +101,8 @@ multilist_create_impl(size_t size, size_t offset,
* reserve the RAM necessary to create the extra slots for additional CPUs up
* front, and dynamically adding them is a complex task.
*/
multilist_t *
multilist_create(size_t size, size_t offset,
void
multilist_create(multilist_t *ml, size_t size, size_t offset,
multilist_sublist_index_func_t *index_func)
{
int num_sublists;
@ -115,7 +113,7 @@ multilist_create(size_t size, size_t offset,
num_sublists = MAX(boot_ncpus, 4);
}
return (multilist_create_impl(size, offset, num_sublists, index_func));
multilist_create_impl(ml, size, offset, num_sublists, index_func);
}
/*
@ -141,7 +139,7 @@ multilist_destroy(multilist_t *ml)
ml->ml_num_sublists = 0;
ml->ml_offset = 0;
kmem_free(ml, sizeof (multilist_t));
ml->ml_sublists = NULL;
}
/*