On Fri, Apr 18, 2014 at 08:49:53PM +0800, Lai Jiangshan wrote: > The ida callers always calls ida_pre_get() before ida_get_new*(). > ida_pre_get() will do layer allocation, and ida_get_new*() will do layer > removal. > > It causes an unneeded ping-pong. The speculative layer removal in > ida_get_new*() can't result expected optimization. > > So we remove the unneeded layer removal in ida_get_new*().
But the as comment says, ida doesn't want to keep extra layers around as it wants to keep its memory footprint minimal. I think the right thing to do is implementing ida_preload() which is simliar to idr_preload() and do away with per-ida layer cache. Thanks. -- tejun -- 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/
