linux-kernel - [PATCH 04/10] staging: lustre: ldlm: use list_for_each_entry in ldlm

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Date:   Mon, 30 Oct 2017 15:59:27 +1100
From:   NeilBrown <neilb@...e.com>
To:     Oleg Drokin <oleg.drokin@...el.com>,
        Andreas Dilger <andreas.dilger@...el.com>,
        James Simmons <jsimmons@...radead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, lustre-devel@...ts.lustre.org
Subject: [PATCH 04/10] staging: lustre: ldlm: use list_for_each_entry in
 ldlm_lock.c

This makes some slightly-confusing code a bit clearer, and
avoids the need for 'tmp'.

Signed-off-by: NeilBrown <neilb@...e.com>
---
 drivers/staging/lustre/lustre/ldlm/ldlm_lock.c |   10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
index ed061cc46986..036a509eb515 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
@@ -885,17 +885,15 @@ static void search_granted_lock(struct list_head *queue,
 				struct ldlm_lock *req,
 				struct sl_insert_point *prev)
 {
-	struct list_head *tmp;
 	struct ldlm_lock *lock, *mode_end, *policy_end;
 
-	list_for_each(tmp, queue) {
-		lock = list_entry(tmp, struct ldlm_lock, l_res_link);
+	list_for_each_entry(lock, queue, l_res_link) {
 
 		mode_end = list_prev_entry(lock, l_sl_mode);
 
 		if (lock->l_req_mode != req->l_req_mode) {
 			/* jump to last lock of mode group */
-			tmp = &mode_end->l_res_link;
+			lock = mode_end;
 			continue;
 		}
 
@@ -932,9 +930,7 @@ static void search_granted_lock(struct list_head *queue,
 					break;
 
 				/* go to next policy group within mode group */
-				tmp = policy_end->l_res_link.next;
-				lock = list_entry(tmp, struct ldlm_lock,
-						  l_res_link);
+				lock = list_next_entry(policy_end, l_res_link);
 			}  /* loop over policy groups within the mode group */
 
 			/* insert point is last lock of the mode group,