[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: Interaction between Xen and XFS: stray RW mappings
On Tue, Oct 23, 2007 at 10:36:41AM +1000, David Chinner wrote: > > That doesn't mean it is correct. > > Right, but it also points to the fact that it's not causing problems > from 99.999% of ppl out there. So you're waiting for someone to take months to debug this again? > You mean like vmap() could record the pages passed to it in the area->pages > array, The page tables contain pointers to the pages anyways. vunmap() has to walk them. It would not be very difficult to store them in an array during the walk. > > If we did this, it would probably be best to pass a page release function > into the vmap or vunmap call - we'd need page_cache_release() called on > the page rather than __free_page().... Possible. Normally vmalloc pages should not be in the LRU except yours so it would be probably fine to just change it. > The solution belongs behind the vmap/vunmap interface, not in XFS.... You could also just keep the array from map time around yourself. Then you could do it yourself. -Andi _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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