On Fri, 26 Sep 2014, Vladimir Davydov wrote: > The callback_mutex is only used to synchronize reads/updates of cpusets' > flags and cpu/node masks. These operations should always proceed fast so > there's no reason why we can't use a spinlock instead of the mutex. Checked that and given the other restrictions already on the use of callback_mutex this is to be expected. Acked-by: Christoph Lameter <cl@xxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>