ocfs2/dlm: Activate dlm->master_hash for master list entries
With this patch, the mles are stored in a hash and not a simple list.
This should improve the mle lookup time when the number of outstanding
masteries is large.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c
index c82feb7..336a98e 100644
--- a/fs/ocfs2/dlm/dlmdebug.c
+++ b/fs/ocfs2/dlm/dlmdebug.c
@@ -501,18 +501,25 @@
static int debug_mle_print(struct dlm_ctxt *dlm, struct debug_buffer *db)
{
struct dlm_master_list_entry *mle;
- int out = 0;
+ struct hlist_head *bucket;
+ struct hlist_node *list;
+ int i, out = 0;
unsigned long total = 0;
out += snprintf(db->buf + out, db->len - out,
"Dumping MLEs for Domain: %s\n", dlm->name);
spin_lock(&dlm->master_lock);
- list_for_each_entry(mle, &dlm->master_list, list) {
- ++total;
- if (db->len - out < 200)
- continue;
- out += dump_mle(mle, db->buf + out, db->len - out);
+ for (i = 0; i < DLM_HASH_BUCKETS; i++) {
+ bucket = dlm_master_hash(dlm, i);
+ hlist_for_each(list, bucket) {
+ mle = hlist_entry(list, struct dlm_master_list_entry,
+ master_hash_node);
+ ++total;
+ if (db->len - out < 200)
+ continue;
+ out += dump_mle(mle, db->buf + out, db->len - out);
+ }
}
spin_unlock(&dlm->master_lock);
@@ -813,12 +820,11 @@
/* Lists: Dirty=Empty Purge=InUse PendingASTs=Empty ... */
out += snprintf(db->buf + out, db->len - out,
"Lists: Dirty=%s Purge=%s PendingASTs=%s "
- "PendingBASTs=%s Master=%s\n",
+ "PendingBASTs=%s\n",
(list_empty(&dlm->dirty_list) ? "Empty" : "InUse"),
(list_empty(&dlm->purge_list) ? "Empty" : "InUse"),
(list_empty(&dlm->pending_asts) ? "Empty" : "InUse"),
- (list_empty(&dlm->pending_basts) ? "Empty" : "InUse"),
- (list_empty(&dlm->master_list) ? "Empty" : "InUse"));
+ (list_empty(&dlm->pending_basts) ? "Empty" : "InUse"));
/* Purge Count: xxx Refs: xxx */
out += snprintf(db->buf + out, db->len - out,