19  * Charge lifetime sanitation
1101 	/* Memcg to charge can't be determined. */  in memcg_kmem_bypass()
1511 			/* moving charge context might have finished. */  in mem_cgroup_wait_acct_move()
1964 	 * We are in the middle of the charge context here, so we  in mem_cgroup_oom()
1969 	 * handling until the charge can succeed; remember the context and put  in mem_cgroup_oom()
1979 	 * victim and then we have to bail out from the charge path.  in mem_cgroup_oom()
2020  * situation.  Sleeping directly in the charge context with all kinds
2192 	 * When charge migration first begins, we can have locked and  in lock_page_memcg()
2268  * consume_stock: Try to consume stocked charge on this cpu.
2270  * @nr_pages: how many pages to charge.
2366  * Drains all per-CPU charge caches for given root_memcg resp. subtree
2622 	 * larger the current charge patch is than that.  in calculate_high_delay()
2791 	 * may have been able to free some pages.  Retry the charge  in try_charge()
2801 	 * At task move, charge accounts can be doubly counted. So, it's  in try_charge()
2822 	 * a forward progress or bypass the charge if the oom killer  in try_charge()
3067  * __memcg_kmem_charge: charge a number of kernel pages to a memcg
3068  * @memcg: memory cgroup to charge
3070  * @nr_pages: number of pages to charge
3116  * __memcg_kmem_charge_page: charge a kmem page to the current memory cgroup
3117  * @page: page to charge
3331  * mem_cgroup_move_swap_account - move swap charge and swap_cgroup's record.
5557 /* Handlers for move charge at task migration. */
5562 	/* Try a single bulk charge without reclaim first, kswapd may wake */  in mem_cgroup_do_precharge()
5675  * @compound: charge the page as compound or small page
5681  * This function doesn't do "charge" to new cgroup and doesn't do "uncharge"
5794  * get_mctgt_type - get target type of moving charge
5801  *   0(MC_TARGET_NONE): if the pte is not a target for move charge.
5803  *     move charge. if @target is not NULL, the page is stored in target->page
5806  *     target for charge migration. if @target is not NULL, the entry is stored
5810  *     For now we such page is charge like a regular page would be as for all
6032 	/* charge immigration isn't supported on the default hierarchy */  in mem_cgroup_can_attach()
6038 	 * where charge immigration is not used.  Perform charge  in mem_cgroup_can_attach()
6199 		 * We try charge one by one, but don't do any additional  in mem_cgroup_move_charge_pte_range()
6200 		 * charges to mc.to if we have failed in charge once in attach()  in mem_cgroup_move_charge_pte_range()
6231 		 * to move enough charges, but moving charge is a best-effort  in mem_cgroup_move_charge()
6240 	 * additional charge, the page walk just aborts.  in mem_cgroup_move_charge()
6804  * __mem_cgroup_charge - charge a newly allocated page to a cgroup
6805  * @page: page to charge
6809  * Try to charge @page to the memcg that @mm belongs to, reclaiming
6826 		 * Every swap fault against a single page tries to charge the  in __mem_cgroup_charge()
6867 	 * so this is a non-issue here. Memory and swap charge lifetimes  in __mem_cgroup_charge()
6868 	 * correspond 1:1 to page and swap slot lifetimes: we charge the  in __mem_cgroup_charge()
6876 		 * memory+swap charge, drop the swap entry duplicate.  in __mem_cgroup_charge()
7022  * mem_cgroup_migrate - charge a page's replacement
7026  * Charge @newpage as a replacement page for @oldpage. @oldpage will
7055 	/* Force-charge the new page. The old one will be freed soon */  in mem_cgroup_migrate()
7104  * mem_cgroup_charge_skmem - charge socket memory
7105  * @memcg: memcg to charge
7106  * @nr_pages: number of pages to charge
7108  * Charges @nr_pages to @memcg. Returns %true if the charge fit within
7109  * @memcg's configured limit, %false if the charge had to be forced.
7228  * mem_cgroup_swapout - transfer a memsw charge to swap
7229  * @page: page whose memsw charge to transfer
7230  * @entry: swap entry to move the charge to
7232  * Transfer the memsw charge of @page to @entry.
7257 	 * have an ID allocated to it anymore, charge the closest online  in mem_cgroup_swapout()
7258 	 * ancestor for the swap instead and transfer the memory+swap charge.  in mem_cgroup_swapout()
7297  * @entry: swap entry to charge
7299  * Try to charge @page's memcg for the swap space at @entry.