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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