The patch titled memcg: memory swap controller: fix limit check has been removed from the -mm tree. Its filename was memcg-memoryswap-controller-fix-limit-check.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: memcg: memory swap controller: fix limit check From: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> There are scatterd calls of res_counter_check_under_limit(), and most of them don't take mem+swap accounting into account. define mem_cgroup_check_under_limit() and avoid direct use of res_counter_check_limit(). Reported-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Signed-off-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Cc: Balbir Singh <balbir@xxxxxxxxxx> Cc: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Cc: Hugh Dickins <hugh@xxxxxxxxxxx> Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memcontrol.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff -puN mm/memcontrol.c~memcg-memoryswap-controller-fix-limit-check mm/memcontrol.c --- a/mm/memcontrol.c~memcg-memoryswap-controller-fix-limit-check +++ a/mm/memcontrol.c @@ -571,6 +571,18 @@ done: return ret; } +static bool mem_cgroup_check_under_limit(struct mem_cgroup *mem) +{ + if (do_swap_account) { + if (res_counter_check_under_limit(&mem->res) && + res_counter_check_under_limit(&mem->memsw)) + return true; + } else + if (res_counter_check_under_limit(&mem->res)) + return true; + return false; +} + /* * Dance down the hierarchy if needed to reclaim memory. We remember the * last child we reclaimed from, so that we don't end up penalizing @@ -592,7 +604,7 @@ static int mem_cgroup_hierarchical_recla * have left. */ ret = try_to_free_mem_cgroup_pages(root_mem, gfp_mask, noswap); - if (res_counter_check_under_limit(&root_mem->res)) + if (mem_cgroup_check_under_limit(root_mem)) return 0; next_mem = mem_cgroup_get_first_node(root_mem); @@ -606,7 +618,7 @@ static int mem_cgroup_hierarchical_recla continue; } ret = try_to_free_mem_cgroup_pages(next_mem, gfp_mask, noswap); - if (res_counter_check_under_limit(&root_mem->res)) + if (mem_cgroup_check_under_limit(root_mem)) return 0; cgroup_lock(); next_mem = mem_cgroup_get_next_node(next_mem, root_mem); @@ -709,12 +721,8 @@ static int __mem_cgroup_try_charge(struc * current usage of the cgroup before giving up * */ - if (do_swap_account) { - if (res_counter_check_under_limit(&mem_over_limit->res) && - res_counter_check_under_limit(&mem_over_limit->memsw)) - continue; - } else if (res_counter_check_under_limit(&mem_over_limit->res)) - continue; + if (mem_cgroup_check_under_limit(mem_over_limit)) + continue; if (!nr_retries--) { if (oom) { @@ -1334,7 +1342,7 @@ int mem_cgroup_shrink_usage(struct mm_st do { progress = try_to_free_mem_cgroup_pages(mem, gfp_mask, true); - progress += res_counter_check_under_limit(&mem->res); + progress += mem_cgroup_check_under_limit(mem); } while (!progress && --retry); css_put(&mem->css); _ Patches currently in -mm which might be from nishimura@xxxxxxxxxxxxxxxxx are origin.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html