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From: Andrew Morton <akpm@linux-foundation.org>
To: Vitaly Wool <vitalywool@gmail.com>
Cc: Linux-MM <linux-mm@kvack.org>,
	linux-kernel@vger.kernel.org, Oleksiy.Avramchenko@sony.com,
	Guenter Roeck <linux@roeck-us.net>
Subject: Re: [PATCH] z3fold: encode object length in the handle
Date: Thu, 25 Oct 2018 12:42:49 -0700	[thread overview]
Message-ID: <20181025124249.0ba63f1041ed8836ff6e6190@linux-foundation.org> (raw)
In-Reply-To: <20181025112821.0924423fb9ecc7918896ec2b@gmail.com>

On Thu, 25 Oct 2018 11:28:21 +0200 Vitaly Wool <vitalywool@gmail.com> wrote:

> Reclaim and free can race on an object (which is basically ok) but
> in order for reclaim to be able to  map "freed" object we need to
> encode object length in the handle. handle_to_chunks() is thus
> introduced to extract object length from a handle and use it during
> mapping of the last object we couldn't correctly map before.

What are the runtime effects of this change?

Thanks.

  reply	other threads:[~2018-10-25 19:42 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-25  9:28 [PATCH] z3fold: encode object length in the handle Vitaly Wool
2018-10-25 19:42 ` Andrew Morton [this message]
     [not found]   ` <CAMJBoFMWV-HbymH6D0PYF6EJFoLoheDHCwaQgZiadvd7BZSE2w@mail.gmail.com>
2018-11-07 23:00     ` Andrew Morton

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