On Fri, Sep 19, 2014 at 02:57:03AM +0000, Drokin, Oleg wrote: > 4. Sometimes we need large allocations. general kmalloc is less > reliable as system lives on and memory fragmentation worsens. So we > have this "allocations over 2-4 pages get switched to vmalloc" logic, > if there's a way to do that automatically - that would be great. Julia's patch only changes OBD_ALLOC() functions and those are always kmalloc so that's not an issue here. The OBD_ALLOC_LARGE() macro is vmalloc() or kmalloc() if the size is small enough. We don't really want to choose between kmalloc and vmalloc automatically. My instinct is that we should change all the OBD_ALLOC_LARGE() to vmalloc() and trust it to allocate them in the most sane way possible. But I haven't really looked very closely. regards, dan carpenter _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
