On Sat, 10 May 2014, Jianyu Zhan wrote: > mlocked_vma_newpage() is only called in fault path by > page_add_new_anon_rmap(), which is called on a *new* page. > And such page is initially only visible via the pagetables, and the > pte is locked while calling page_add_new_anon_rmap(), so we need not > use an irq-safe mod_zone_page_state() here, using a light-weight version > __mod_zone_page_state() would be OK.
This has nothing to do with the safety of statistics operations that work on different data structures. Which leads to the conclusion that __mod_page_state cannot be used here. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
