On Sun, Feb 04, 2007 at 11:46:09AM +0100, Nick Piggin wrote: > > > It's better than taking mmap_sem and walking pagetables... > > I'm not convinced. Though I am more convinced that looking at mm *at all* (either to take the mmap_sem and find the vma, or to take the mmap_sem and run get_user_pages) is going to hurt. We'd have to special case kernel threads, which don't even have an mm, let alone the vmas... too ugly. I'll revert to my temporary-page approach: at least that will fix the problem. - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
