Am 01.06.2014 15:08, schrieb Real Name: > From: Honggang Li <enjoymind...@gmail.com> > > 1) uml kernel bootmem managed through bootmem_data->node_bootmem_map, > not the struct page array, so the array is unnecessary. > > 2) the bootmem struct page array has been pointed by a *local* pointer, > struct page *map, in init_maps function. The array can be accessed only > in init_maps's scope. As a result, uml kernel wastes about 1% of total > memory.
I reread your patch again. You missed one important point. init_maps() setups max_mapnr which is used by virt_addr_valid(). We have to be extremely careful here to not introduce a subtle fuckup. Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
