On Tue, 15 May 2012, Eric Dumazet wrote: > > Following patch fixes it by moving page->_count out of cmpxchg_double > > data. So that slub does no change it while updating slub meta-data in > > struct page. > > I say again : Page is owned by slub, so get_page() or put_page() is not > allowed ? It is allowed since slab memory can be used for DMA. > How is put_page() going to work with order-1 or order-2 allocations ? It is always incrementing the page count of the head page. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>