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Date: Sun, 27 Jan 2013 14:10:16 -0800 (PST)
From: Hugh Dickins <hughd@google.com>
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To: Simon Jeons <simon.jeons@gmail.com>
cc: Andrew Morton <akpm@linux-foundation.org>,
        Petr Holasek <pholasek@redhat.com>,
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        Izik Eidus <izik.eidus@ravellosystems.com>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 5/11] ksm: get_ksm_page locked
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On Sat, 26 Jan 2013, Simon Jeons wrote:
> 
> BTW, what's the meaning of ksm page forked? 

A ksm page is mapped into a process's mm, then that process calls fork():
the ksm page then appears in the child's mm, before ksmd has tracked it.