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Date: Tue, 25 Jul 2017 14:14:31 -0400
From: Josef Bacik <josef@toxicpanda.com>
Subject: Re: [PATCH v2 06/23] percpu: end chunk area maps page aligned for
 the populated bitmap
Message-ID: <20170725181431.GF18880@destiny>
References: <20170724230220.21774-1-dennisz@fb.com>
 <20170724230220.21774-7-dennisz@fb.com>
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In-Reply-To: <20170724230220.21774-7-dennisz@fb.com>
Sender: owner-linux-mm@kvack.org
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To: Dennis Zhou <dennisz@fb.com>
Cc: Tejun Heo <tj@kernel.org>, Christoph Lameter <cl@linux.com>, Josef Bacik <josef@toxicpanda.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kernel-team@fb.com, Dennis Zhou <dennisszhou@gmail.com>

On Mon, Jul 24, 2017 at 07:02:03PM -0400, Dennis Zhou wrote:
> From: "Dennis Zhou (Facebook)" <dennisszhou@gmail.com>
> 
> The area map allocator manages the first chunk area by hiding all but
> the region it is responsible for serving in the area map. To align this
> with the populated page bitmap, end_offset is introduced to keep track
> of the delta to end page aligned. The area map is appended with the
> page aligned end when necessary to be in line with how the bitmap
> allocator requires the ending to be aligned with the LCM of PAGE_SIZE
> and the size of each bitmap block. percpu_stats is updated to ignore
> this region when present.
> 
> Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>

Reviewed-by: Josef Bacik <jbacik@fb.com>

Thanks,

Josef

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