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From: Tejun Heo <tj@kernel.org>
To: Wei Yang <richard.weiyang@gmail.com>
Cc: akpm@linux-foundation.org, mhocko@suse.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/vmalloc: reduce half comparison during pcpu_get_vm_areas()
Date: Mon, 7 Aug 2017 08:11:02 -0700	[thread overview]
Message-ID: <20170807151102.GE4050379@devbig577.frc2.facebook.com> (raw)
In-Reply-To: <20170803063822.48702-1-richard.weiyang@gmail.com>

On Thu, Aug 03, 2017 at 02:38:22PM +0800, Wei Yang wrote:
> In pcpu_get_vm_areas(), it checks each range is not overlapped. To make
> sure it is, only (N^2)/2 comparison is necessary, while current code does
> N^2 times. By starting from the next range, it achieves the goal and the
> continue could be removed.
> 
> At the mean time, other two work in this patch:
> *  the overlap check of two ranges could be done with one clause
> *  one typo in comment is fixed.
> 
> Signed-off-by: Wei Yang <richard.weiyang@gmail.com>

Acked-by: Tejun Heo <tj@kernel.org>

Thanks.

-- 
tejun

      parent reply	other threads:[~2017-08-07 15:11 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-03  6:38 [PATCH] mm/vmalloc: reduce half comparison during pcpu_get_vm_areas() Wei Yang
2017-08-07 11:40 ` Michal Hocko
2017-08-07 15:11 ` Tejun Heo [this message]

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