linux-kernel - Re: [PATCH v2 03/13] rwsem: move rwsem_down_failed_common code into rwsem_down_{read,write}

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Date:	Sat, 27 Apr 2013 14:21:00 -0700
From:	Davidlohr Bueso <davidlohr.bueso@...com>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	Michel Lespinasse <walken@...gle.com>,
	Alex Shi <alex.shi@...el.com>, Ingo Molnar <mingo@...nel.org>,
	David Howells <dhowells@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Yuanhan Liu <yuanhan.liu@...ux.intel.com>,
	Rik van Riel <riel@...hat.com>,
	Dave Chinner <david@...morbit.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 03/13] rwsem: move rwsem_down_failed_common code into
 rwsem_down_{read,write}_failed

Sorry, but I just couldn't help myself :)

From: Davidlohr Bueso <davidlohr.bueso@...com>
Subject: [PATCH] rwsem: no need for explicit signed longs

Signed-off-by: Davidlohr Bueso <davidlohr.bueso@...com>
---
 lib/rwsem.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/lib/rwsem.c b/lib/rwsem.c
index 4e4c889..50fdd89 100644
--- a/lib/rwsem.c
+++ b/lib/rwsem.c
@@ -63,7 +63,7 @@ __rwsem_do_wake(struct rw_semaphore *sem, enum rwsem_wake_type wake_type)
 	struct rwsem_waiter *waiter;
 	struct task_struct *tsk;
 	struct list_head *next;
-	signed long oldcount, woken, loop, adjustment;
+	long oldcount, woken, loop, adjustment;
 
 	waiter = list_entry(sem->wait_list.next, struct rwsem_waiter, list);
 	if (waiter->type == RWSEM_WAITING_FOR_WRITE) {
@@ -144,11 +144,10 @@ __rwsem_do_wake(struct rw_semaphore *sem, enum rwsem_wake_type wake_type)
  */
 struct rw_semaphore __sched *rwsem_down_read_failed(struct rw_semaphore *sem)
 {
-	signed long adjustment = -RWSEM_ACTIVE_READ_BIAS;
+	long count, adjustment = -RWSEM_ACTIVE_READ_BIAS;
 	struct rwsem_waiter waiter;
 	struct task_struct *tsk = current;
-	signed long count;
-
+	
 	/* set up my own style of waitqueue */
 	waiter.task = tsk;
 	waiter.type = RWSEM_WAITING_FOR_READ;
@@ -192,10 +191,9 @@ struct rw_semaphore __sched *rwsem_down_read_failed(struct rw_semaphore *sem)
  */
 struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem)
 {
-	signed long adjustment = -RWSEM_ACTIVE_WRITE_BIAS;
+	long count, adjustment = -RWSEM_ACTIVE_WRITE_BIAS;
 	struct rwsem_waiter waiter;
 	struct task_struct *tsk = current;
-	signed long count;
 
 	/* set up my own style of waitqueue */
 	waiter.task = tsk;
-- 
1.7.11.7



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