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Date:      Tue, 8 Nov 2005 00:43:21 -0600 (CST)
From:      Mike Silbersack <silby@silby.com>
To:        Alan Cox <alc@FreeBSD.org>
Cc:        cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/vm vm_page.c
Message-ID:  <20051108004258.Q31106@odysseus.silby.com>
In-Reply-To: <200511080633.jA86XMXm062174@repoman.freebsd.org>
References:  <200511080633.jA86XMXm062174@repoman.freebsd.org>

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On Tue, 8 Nov 2005, Alan Cox wrote:

>  If a physical page is mapped by two or more virtual addresses, transmitted
>  by the zero-copy sockets method, and written to before the transmission
>  completes, we need to destroy all of the existing mappings to the page,
>  not just the one that we fault on.  Otherwise, the mappings will no longer
>  be to the same page and changes made through one of the mappings will not
>  be visible through the others.

These kinds of changes could REALLY use regression tests, if possible.

Mike "Silby" Silbersack



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