From: Matthew Wilcox <willy@xxxxxxxxxxxxxxx> Date: Fri, 27 Dec 2013 13:00:18 -0500 > It seems to me that while (for example) on SPARC, it's not possible to > create a non-coherent mapping with mmap(), after we've done an mmap, > we can then use remap_file_pages() to create a mapping that no longer > aliases in the D-cache. > > I have only compile-tested this patch. I don't have any SPARC hardware, > and my PA-RISC hardware hasn't been turned on in six years ... I noticed > this while wandering around looking at some other stuff. I suppose this is needed, but only in the case where the mapping is shared and writable, right? I don't see you testing those conditions, but with them I'd be OK with this change. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>