linux-kernel - [PATCH 1/1] sched: Deduplicate code with do-while

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Message-Id: <43ffea6ee2152b90dedf962eac851609e4197218.1560256112.git.asml.silence@gmail.com>
Date:   Tue, 11 Jun 2019 15:29:07 +0300
From:   "Pavel Begunkov (Silence)" <asml.silence@...il.com>
To:     Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org
Cc:     Pavel Begunkov <asml.silence@...il.com>
Subject: [PATCH 1/1] sched: Deduplicate code with do-while

From: Pavel Begunkov <asml.silence@...il.com>

Statements in the loop's body and before it are identical.
Use do-while to not repeat it.

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 kernel/sched/wait.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c
index fa0f9adfb752..c1e566a114ca 100644
--- a/kernel/sched/wait.c
+++ b/kernel/sched/wait.c
@@ -118,16 +118,12 @@ static void __wake_up_common_lock(struct wait_queue_head *wq_head, unsigned int
 	bookmark.func = NULL;
 	INIT_LIST_HEAD(&bookmark.entry);
 
-	spin_lock_irqsave(&wq_head->lock, flags);
-	nr_exclusive = __wake_up_common(wq_head, mode, nr_exclusive, wake_flags, key, &bookmark);
-	spin_unlock_irqrestore(&wq_head->lock, flags);
-
-	while (bookmark.flags & WQ_FLAG_BOOKMARK) {
+	do {
 		spin_lock_irqsave(&wq_head->lock, flags);
 		nr_exclusive = __wake_up_common(wq_head, mode, nr_exclusive,
 						wake_flags, key, &bookmark);
 		spin_unlock_irqrestore(&wq_head->lock, flags);
-	}
+	} while (bookmark.flags & WQ_FLAG_BOOKMARK);
 }
 
 /**
-- 
2.22.0