The patch titled Subject: mm, memcg: fix mem_cgroup_swapout() for THPs has been removed from the -mm tree. Its filename was mm-memcg-fix-mem_cgroup_swapout-for-thps.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Shakeel Butt <shakeelb@xxxxxxxxxx> Subject: mm, memcg: fix mem_cgroup_swapout() for THPs d6810d730022 ("memcg, THP, swap: make mem_cgroup_swapout() support THP") changed mem_cgroup_swapout() to support transparent huge page (THP). However the patch missed one location which should be changed for correctly handling THPs. The resulting bug will cause the memory cgroups whose THPs were swapped out to become zombies on deletion. Link: http://lkml.kernel.org/r/20171128161941.20931-1-shakeelb@xxxxxxxxxx Fixes: d6810d730022 ("memcg, THP, swap: make mem_cgroup_swapout() support THP") Signed-off-by: Shakeel Butt <shakeelb@xxxxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxxx> Cc: Huang Ying <ying.huang@xxxxxxxxx> Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx> Cc: Greg Thelen <gthelen@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memcontrol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN mm/memcontrol.c~mm-memcg-fix-mem_cgroup_swapout-for-thps mm/memcontrol.c --- a/mm/memcontrol.c~mm-memcg-fix-mem_cgroup_swapout-for-thps +++ a/mm/memcontrol.c @@ -6044,7 +6044,7 @@ void mem_cgroup_swapout(struct page *pag memcg_check_events(memcg, page); if (!mem_cgroup_is_root(memcg)) - css_put(&memcg->css); + css_put_many(&memcg->css, nr_entries); } /** _ Patches currently in -mm which might be from shakeelb@xxxxxxxxxx are mm-mlock-vmscan-no-more-skipping-pagevecs.patch vfs-remove-might_sleep-from-clear_inode.patch