linux-kernel - Re: [PATCH] kevent_user: use struct kevent

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Message-ID: <20060822122043.GB4815@2ka.mipt.ru>
Date:	Tue, 22 Aug 2006 16:20:43 +0400
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Ulrich Drepper <drepper@...hat.com>,
	Andrew Morton <akpm@...l.org>, netdev <netdev@...r.kernel.org>,
	Zach Brown <zach.brown@...cle.com>
Subject: Re: [PATCH] kevent_user: use struct kevent_mring for the page ring

On Tue, Aug 22, 2006 at 12:55:04PM +0100, Christoph Hellwig (hch@...radead.org) wrote:
> Currently struct kevent_user.print is an array of unsigned long, but it's used
> as an array of pointers to struct kevent_mring everyewhere in the code.
> 
> Switch it to use the real type and cast the return value from __get_free_page /
> argument to free_page.
> 
> 
>  include/linux/kevent.h      |    2 +-
>  kernel/kevent/kevent_user.c |   31 +++++++++++--------------------
>   2 files changed, 12 insertions(+), 21 deletions(-)
> 
> Signed-off-by: Christoph Hellwig <hch@....de>

I will apply this patch with small minor nit below.

>  	if (idx >= u->pages_in_use) {
> -		u->pring[idx] = __get_free_page(GFP_KERNEL);
> +		u->pring[idx] = (void *)__get_free_page(GFP_KERNEL);

Better cast it directly to (struct kevent_mring *).


If there will not be any objectsion about syscall-based initialization,
I will release new patchset tomorrow with your changes.

Thank you, Christoph.

-- 
	Evgeniy Polyakov
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