Messages in this thread | | | Subject | Re: fuse, get_user_pages, flush_anon_page, aliasing caches and all that again | From | Miklos Szeredi <> | Date | Sun, 31 Dec 2006 13:24:53 +0100 |
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> I'm willing to do that - and I guess this means we can probably do this > instead of walking the list of VMAs for the shared mapping, thereby > hitting both anonymous and shared mappings with the same code?
But for the get_user_pages() case there's no point, is there? The VMA and the virtual address is already available, so trying to find it again through RMAP doesn't much make sense.
Users of get_user_pages() don't care about any other mappings (maybe ptrace does, I don't know) only about one single user mapping and one kernel mapping.
So using flush_dcache_page() there is an overkill, trying to teach it about anonymous pages is not the real solution, flush_dcache_page() was never meant to be used on anything but file mapped pages.
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