[PATCH 05/12] staging: lustre: ldlm: use list_for_each_entry in ldlm_resource.c

From: NeilBrown
Date: Tue Dec 12 2017 - 22:16:58 EST


Having a stand-alone "list_entry()" call is often a sign
that something like "list_for_each_entry()" would
make the code clearer.

Signed-off-by: NeilBrown <neilb@xxxxxxxx>
---
drivers/staging/lustre/lustre/ldlm/ldlm_resource.c | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
index 2689ffdf10e3..9958533cc227 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
@@ -752,24 +752,22 @@ extern struct ldlm_lock *ldlm_lock_get(struct ldlm_lock *lock);
static void cleanup_resource(struct ldlm_resource *res, struct list_head *q,
__u64 flags)
{
- struct list_head *tmp;
int rc = 0;
bool local_only = !!(flags & LDLM_FL_LOCAL_ONLY);

do {
- struct ldlm_lock *lock = NULL;
+ struct ldlm_lock *lock = NULL, *tmp;
struct lustre_handle lockh;

/* First, we look for non-cleaned-yet lock
* all cleaned locks are marked by CLEANED flag.
*/
lock_res(res);
- list_for_each(tmp, q) {
- lock = list_entry(tmp, struct ldlm_lock, l_res_link);
- if (ldlm_is_cleaned(lock)) {
- lock = NULL;
+ list_for_each_entry(tmp, q, l_res_link) {
+ if (ldlm_is_cleaned(tmp))
continue;
- }
+
+ lock = tmp;
LDLM_LOCK_GET(lock);
ldlm_set_cleaned(lock);
break;
@@ -1283,19 +1281,15 @@ void ldlm_res2desc(struct ldlm_resource *res, struct ldlm_resource_desc *desc)
*/
void ldlm_dump_all_namespaces(enum ldlm_side client, int level)
{
- struct list_head *tmp;
+ struct ldlm_namespace *ns;

if (!((libcfs_debug | D_ERROR) & level))
return;

mutex_lock(ldlm_namespace_lock(client));

- list_for_each(tmp, ldlm_namespace_list(client)) {
- struct ldlm_namespace *ns;
-
- ns = list_entry(tmp, struct ldlm_namespace, ns_list_chain);
+ list_for_each_entry(ns, ldlm_namespace_list(client), ns_list_chain)
ldlm_namespace_dump(level, ns);
- }

mutex_unlock(ldlm_namespace_lock(client));
}