all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate
find_first{,_zero}_bit is a more effective analogue of 'next' version if
start == 0. This patch replaces 'next' with 'first' where things look
trivial.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 9b88219..227da5b 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -861,7 +861,7 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
* to see if there are any nodes that still need to be
* considered. these will not appear in the mle nodemap
* but they might own this lockres. wait on them. */
- bit = find_next_bit(dlm->recovery_map, O2NM_MAX_NODES, 0);
+ bit = find_first_bit(dlm->recovery_map, O2NM_MAX_NODES);
if (bit < O2NM_MAX_NODES) {
mlog(0, "%s: res %.*s, At least one node (%d) "
"to recover before lock mastery can begin\n",
@@ -912,7 +912,7 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
dlm_wait_for_recovery(dlm);
spin_lock(&dlm->spinlock);
- bit = find_next_bit(dlm->recovery_map, O2NM_MAX_NODES, 0);
+ bit = find_first_bit(dlm->recovery_map, O2NM_MAX_NODES);
if (bit < O2NM_MAX_NODES) {
mlog(0, "%s: res %.*s, At least one node (%d) "
"to recover before lock mastery can begin\n",
@@ -1079,7 +1079,7 @@ static int dlm_wait_for_lock_mastery(struct dlm_ctxt *dlm,
sleep = 1;
/* have all nodes responded? */
if (voting_done && !*blocked) {
- bit = find_next_bit(mle->maybe_map, O2NM_MAX_NODES, 0);
+ bit = find_first_bit(mle->maybe_map, O2NM_MAX_NODES);
if (dlm->node_num <= bit) {
/* my node number is lowest.
* now tell other nodes that I am
@@ -1234,8 +1234,8 @@ static int dlm_restart_lock_mastery(struct dlm_ctxt *dlm,
} else {
mlog(ML_ERROR, "node down! %d\n", node);
if (blocked) {
- int lowest = find_next_bit(mle->maybe_map,
- O2NM_MAX_NODES, 0);
+ int lowest = find_first_bit(mle->maybe_map,
+ O2NM_MAX_NODES);
/* act like it was never there */
clear_bit(node, mle->maybe_map);
@@ -1795,7 +1795,7 @@ int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data,
"MLE for it! (%.*s)\n", assert->node_idx,
namelen, name);
} else {
- int bit = find_next_bit (mle->maybe_map, O2NM_MAX_NODES, 0);
+ int bit = find_first_bit(mle->maybe_map, O2NM_MAX_NODES);
if (bit >= O2NM_MAX_NODES) {
/* not necessarily an error, though less likely.
* could be master just re-asserting. */
@@ -2521,7 +2521,7 @@ static int dlm_is_lockres_migratable(struct dlm_ctxt *dlm,
}
if (!nonlocal) {
- node_ref = find_next_bit(res->refmap, O2NM_MAX_NODES, 0);
+ node_ref = find_first_bit(res->refmap, O2NM_MAX_NODES);
if (node_ref >= O2NM_MAX_NODES)
return 0;
}
@@ -3303,7 +3303,7 @@ static void dlm_clean_block_mle(struct dlm_ctxt *dlm,
BUG_ON(mle->type != DLM_MLE_BLOCK);
spin_lock(&mle->spinlock);
- bit = find_next_bit(mle->maybe_map, O2NM_MAX_NODES, 0);
+ bit = find_first_bit(mle->maybe_map, O2NM_MAX_NODES);
if (bit != dead_node) {
mlog(0, "mle found, but dead node %u would not have been "
"master\n", dead_node);
@@ -3542,7 +3542,7 @@ void dlm_force_free_mles(struct dlm_ctxt *dlm)
spin_lock(&dlm->master_lock);
BUG_ON(dlm->dlm_state != DLM_CTXT_LEAVING);
- BUG_ON((find_next_bit(dlm->domain_map, O2NM_MAX_NODES, 0) < O2NM_MAX_NODES));
+ BUG_ON((find_first_bit(dlm->domain_map, O2NM_MAX_NODES) < O2NM_MAX_NODES));
for (i = 0; i < DLM_HASH_BUCKETS; i++) {
bucket = dlm_master_hash(dlm, i);
