Minchan Kim <minchan.kim@xxxxxxxxx> writes: > On Mon, Nov 8, 2010 at 7:14 AM, Johannes Weiner <hannes@xxxxxxxxxxx> wrote: >> The memory cgroup dirty info calculation currently uses a signed >> 64-bit type to represent the amount of dirtyable memory in pages. >> >> This can instead be changed to an unsigned word, which will allow the >> formula to function correctly with up to 160G of LRU pages on a 32-bit Is is really 160G of LRU pages? On 32-bit machine we use a 32 bit unsigned page number. With a 4KiB page size, I think that maps 16TiB (1<<(32+12)) bytes. Or is there some other limit? >> system, assuming 4k pages. ÂThat should be plenty even when taking >> racy folding of the per-cpu counters into account. >> >> This fixes a compilation error on 32-bit systems as this code tries to >> do 64-bit division. >> >> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> >> Reported-by: Dave Young <hidave.darkstar@xxxxxxxxx> > Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx> Reviewed-by: Greg Thelen <gthelen@xxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href