linux-kernel - Copy-on-write

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Message-ID: <22736146.post@talk.nabble.com>
Date:	Thu, 26 Mar 2009 22:15:46 -0700 (PDT)
From:	sidc7 <siddhartha.chhabra@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Copy-on-write


When the kernel does a COW, say from a "src" to a "dest" page, does it need
to map the "src" and "dest" page to its address space or the kernel can
directly initiate the read from "src" and write to "dest" page ?

Thanks,
SC
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