[PATCH] ocfs2: use hlists for lockres hash

Switch from list_head to hlist_head. Make the size of the hash dependent
upon the allocated area, rather than a constant.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 3 insertions, 5 deletions

diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index 23ceaa7127b4..9c772583744a 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -37,9 +37,7 @@
 #define DLM_THREAD_SHUFFLE_INTERVAL    5     // flush everything every 5 passes
 #define DLM_THREAD_MS                  200   // flush at least every 200 ms
 
-#define DLM_HASH_BITS     7
-#define DLM_HASH_SIZE     (1 << DLM_HASH_BITS)
-#define DLM_HASH_MASK     (DLM_HASH_SIZE - 1)
+#define DLM_HASH_BUCKETS     (PAGE_SIZE / sizeof(struct hlist_head))
 
 enum dlm_ast_type {
         DLM_AST = 0,
@@ -87,7 +85,7 @@ enum dlm_ctxt_state {
 struct dlm_ctxt
 {
         struct list_head list;
-        struct list_head *resources;
+        struct hlist_head *lockres_hash;
         struct list_head dirty_list;
         struct list_head purge_list;
         struct list_head pending_asts;
@@ -217,7 +215,7 @@ struct dlm_lock_resource
 {
         /* WARNING: Please see the comment in dlm_init_lockres before
          * adding fields here. */
-        struct list_head list;
+        struct hlist_node hash_node;
         struct kref      refs;
 
         /* please keep these next 3 in this order