ocfs2: calculate lockid hash values outside of the spinlock
Fixes a performance bug - pointed out by Andrew.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index 1c05d48..3b67536 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -39,6 +39,9 @@
#define DLM_HASH_BUCKETS (PAGE_SIZE / sizeof(struct hlist_head))
+/* Intended to make it easier for us to switch out hash functions */
+#define dlm_lockid_hash(_n, _l) full_name_hash(_n, _l)
+
enum dlm_ast_type {
DLM_AST = 0,
DLM_BAST,
@@ -694,7 +697,8 @@
struct dlm_lock_resource *res);
struct dlm_lock_resource * __dlm_lookup_lockres(struct dlm_ctxt *dlm,
const char *name,
- unsigned int len);
+ unsigned int len,
+ unsigned int hash);
struct dlm_lock_resource * dlm_lookup_lockres(struct dlm_ctxt *dlm,
const char *name,
unsigned int len);