dlm: use rsbtbl as resource directory
Remove the dir hash table (dirtbl), and use
the rsb hash table (rsbtbl) as the resource
directory. It has always been an unnecessary
duplication of information.
This improves efficiency by using a single rsbtbl
lookup in many cases where both rsbtbl and dirtbl
lookups were needed previously.
This eliminates the need to handle cases of rsbtbl
and dirtbl being out of sync.
In many cases there will be memory savings because
the dir hash table no longer exists.
Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index ca506ab..065bb75 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -509,17 +509,6 @@
idr_init(&ls->ls_lkbidr);
spin_lock_init(&ls->ls_lkbidr_spin);
- size = dlm_config.ci_dirtbl_size;
- ls->ls_dirtbl_size = size;
-
- ls->ls_dirtbl = vmalloc(sizeof(struct dlm_dirtable) * size);
- if (!ls->ls_dirtbl)
- goto out_lkbfree;
- for (i = 0; i < size; i++) {
- INIT_LIST_HEAD(&ls->ls_dirtbl[i].list);
- spin_lock_init(&ls->ls_dirtbl[i].lock);
- }
-
INIT_LIST_HEAD(&ls->ls_waiters);
mutex_init(&ls->ls_waiters_mutex);
INIT_LIST_HEAD(&ls->ls_orphans);
@@ -567,7 +556,7 @@
ls->ls_recover_buf = kmalloc(dlm_config.ci_buffer_size, GFP_NOFS);
if (!ls->ls_recover_buf)
- goto out_dirfree;
+ goto out_lkbfree;
ls->ls_slot = 0;
ls->ls_num_slots = 0;
@@ -648,8 +637,6 @@
list_del(&ls->ls_list);
spin_unlock(&lslist_lock);
kfree(ls->ls_recover_buf);
- out_dirfree:
- vfree(ls->ls_dirtbl);
out_lkbfree:
idr_destroy(&ls->ls_lkbidr);
vfree(ls->ls_rsbtbl);
@@ -779,13 +766,6 @@
kfree(ls->ls_recover_buf);
/*
- * Free direntry structs.
- */
-
- dlm_dir_clear(ls);
- vfree(ls->ls_dirtbl);
-
- /*
* Free all lkb's in idr
*/
@@ -826,7 +806,6 @@
dlm_purge_requestqueue(ls);
kfree(ls->ls_recover_args);
- dlm_clear_free_entries(ls);
dlm_clear_members(ls);
dlm_clear_members_gone(ls);
kfree(ls->ls_node_array);