cvs commit: src/sys/vm vm_page.c

Mike Silbersack silby at
Tue Nov 8 06:43:26 GMT 2005

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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