On 12/07/2010 08:11 AM, Wu Fengguang wrote:
So the root cause is, the bdi_dirty is well under nr_dirty due to accounting errors. They should be very close because there is only one heavy dirtied bdi in the system. This can be fixed by using bdi_stat_sum(), however that's costly on large NUMA machines. So do a less costly fix of lowering the bdi limit, so that the accounting errors won't lead to the absurd situation "global limit exceeded but bdi limit not exceeded". CC: Rik van Riel<riel@xxxxxxxxxx> CC: Peter Zijlstra<a.p.zijlstra@xxxxxxxxx> Signed-off-by: Wu Fengguang<fengguang.wu@xxxxxxxxx>
I like this simple approach. Acked-by: Rik van Riel <riel@xxxxxxxxxx> -- All rights reversed -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
