On Fri, 7 Feb 2014, Raghavendra K T wrote: > So following discussion TODO for my patch is: > > 1) Update the changelog with user visible impact of the patch. > (Andrew's suggestion) > 2) Add ACCESS_ONCE to numa_node_id(). > 3) Change the "readahead into remote memory" part of the documentation > which is misleading. > > ( I feel no need to add numa_mem_id() since we would specifically limit > the readahead with MAX_REMOTE_READAHEAD in memoryless cpu cases). >
I don't understand what you're saying, numa_mem_id() is local memory to current's cpu. When a node consists only of cpus and not memory it is not true that all memory is then considered remote, you won't find that in any specification that defines memory affinity including the ACPI spec. I can trivially define all cpus on my system to be on memoryless nodes and having that affect readahead behavior when, in fact, there is affinity would be ridiculous. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
