From: Dave Hansen <dave.hansen@linux.intel.com>
To: zhang.yi20@zte.com.cn
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Peter Zijlstra <peterz@infradead.org>,
Darren Hart <dvhart@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCH] futex: bugfix for futex-key conflict when futex use hugepage
Date: Tue, 16 Apr 2013 11:37:40 -0700 [thread overview]
Message-ID: <516D9A74.8030109@linux.intel.com> (raw)
In-Reply-To: <OF000BBE68.EBB4E92E-ON48257B4F.0010C2E7-48257B4F.0013FB89@zte.com.cn>
Instead of bothering to store the index, why not just calculate it, like:
On 04/15/2013 08:37 PM, zhang.yi20@zte.com.cn wrote:
> +static inline int get_page_compound_index(struct page *page)
> +{
> + if (PageHead(page))
> + return 0;
> + return compound_head(page) - page;
> +}
BTW, you've really got to get your mail client fixed. Your patch is
still line-wrapped.
next prev parent reply other threads:[~2013-04-16 18:37 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-16 3:37 [PATCH] futex: bugfix for futex-key conflict when futex use hugepage zhang.yi20
2013-04-16 17:57 ` Darren Hart
2013-04-17 9:55 ` zhang.yi20
2013-04-17 14:18 ` Darren Hart
2013-04-17 15:26 ` Dave Hansen
2013-04-17 15:51 ` Darren Hart
2013-04-18 8:05 ` zhang.yi20
2013-04-18 14:34 ` Darren Hart
2013-04-19 2:13 ` zhang.yi20
2013-04-19 2:42 ` Darren Hart
2013-04-19 2:45 ` Darren Hart
2013-04-19 7:03 ` zhang.yi20
2013-04-16 18:37 ` Dave Hansen [this message]
2013-04-16 18:47 ` Darren Hart
2013-04-17 7:47 ` zhang.yi20
-- strict thread matches above, loose matches on Subject: below --
2013-04-24 13:58 Zhang Yi
2013-04-25 20:52 ` Thomas Gleixner
2013-04-24 14:27 Zhang Yi
2013-04-26 12:13 Zhang Yi
2013-04-26 18:26 ` Thomas Gleixner
2013-05-07 12:23 ` Zhang Yi
2013-05-07 15:20 ` Mel Gorman
2013-05-07 15:24 ` Thomas Gleixner
2013-05-07 15:54 ` Mel Gorman
2013-05-07 12:34 ` Zhang Yi
2013-05-07 12:43 Zhang Yi
2013-05-15 13:57 Zhang Yi
2013-05-15 14:20 ` Mel Gorman
2013-05-16 1:16 ` zhang.yi20
2013-05-16 1:30 ` Darren Hart
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