On Sat, 2007-09-29 at 10:47 +0200, Peter Zijlstra wrote: > Ah, right, that was the detail... all this lumpy reclaim is useless for > atomic allocations. And with SLUB using higher order pages, atomic !0 > order allocations will be very very common. > > One I can remember was: > > add_to_page_cache() > radix_tree_insert() > radix_tree_node_alloc() > kmem_cache_alloc() > > which is an atomic callsite. > > Which leaves us in a situation where we can load pages, because there is > free memory, but can't manage to allocate memory to track them.. Ah, I found a boot log of one of these sessions, its also full of order-2 OOMs.. :-/ - 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
