Re: [patch] 2.6.5-rc2 __WAITQUEUE_INITIALIZER

From: Keith Owens
Date: Mon Mar 29 2004 - 03:11:08 EST


On Sun, 28 Mar 2004 22:53:22 -0800,
Andrew Morton <akpm@xxxxxxxx> wrote:
>Keith Owens <kaos@xxxxxxxxxx> wrote:
>>
>> When struct __wait_queue is on stack or you reuse an existing
>> waitqueue, you get garbage in the flags.
>>
>> Index: 5-rc2.1/include/linux/wait.h
>> --- 5-rc2.1/include/linux/wait.h Thu, 18 Dec 2003 16:46:13 +1100 kaos (linux-2.6/m/c/34_wait.h 1.1 644)
>> +++ 5-rc2.1(w)/include/linux/wait.h Mon, 29 Mar 2004 15:36:39 +1000 kaos (linux-2.6/m/c/34_wait.h 1.1 644)
>> @@ -40,6 +40,7 @@ typedef struct __wait_queue_head wait_qu
>> */
>>
>> #define __WAITQUEUE_INITIALIZER(name, tsk) { \
>> + .flags = 0, \
>> .task = tsk, \
>> .func = default_wake_function, \
>> .task_list = { NULL, NULL } }
>
>The compiler will do this for us?

I thought I had a test case where the flags were not being set to 0,
but cannot reproduce it. Ignore this patch unless I get some real
evidence.

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