linux-kernel - Re: [PATCH v2 1/2] msync: support syncing a small part of the file

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Date:	Mon, 02 Jul 2012 10:14:02 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org, Hugh Dickins <hughd@...gle.com>,
	Chris Friesen <chris.friesen@...band.com>
Subject: Re: [PATCH v2 1/2] msync: support syncing a small part of the file

Il 22/06/2012 23:12, Andrew Morton ha scritto:
> Please recall my thus-far-utterly-and-irritatingly-ignored comments
> about nonlinear mappings.  Presently an msync() on a nonlinear mapping
> will work correctly, because we sync the whole file, yes?  And with
> this change, we will no longer sync all the pages which were covered by
> the affected memory range.  Thus breaking the syscall?

The comment was not ignored, it was missed altogether, and you're
completely right.

Paolo
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