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mm: memcontrol: use do_memsw_account() in a few more places 

It's slightly more descriptive and consistent with other places that
distinguish cgroup1's combined memory+swap accounting scheme from
cgroup2's dedicated swap accounting.

Link: https://lkml.kernel.org/r/20220926135704.400818-4-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Shakeel Butt <shakeelb@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Johannes Weiner 2022-09-26 09:57:03 -04:00 committed by Andrew Morton
parent b25806dcd3
commit b94c4e949c
1 changed files with 10 additions and 10 deletions
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20
mm/memcontrol.c
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@ -1667,17 +1667,17 @@ unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg)
{ {
unsigned long max = READ_ONCE(memcg->memory.max); unsigned long max = READ_ONCE(memcg->memory.max);
if (cgroup_subsys_on_dfl(memory_cgrp_subsys)) { if (do_memsw_account()) {
if (mem_cgroup_swappiness(memcg))
max += min(READ_ONCE(memcg->swap.max),
(unsigned long)total_swap_pages);
} else { /* v1 */
if (mem_cgroup_swappiness(memcg)) { if (mem_cgroup_swappiness(memcg)) {
/* Calculate swap excess capacity from memsw limit */ /* Calculate swap excess capacity from memsw limit */
unsigned long swap = READ_ONCE(memcg->memsw.max) - max; unsigned long swap = READ_ONCE(memcg->memsw.max) - max;
max += min(swap, (unsigned long)total_swap_pages); max += min(swap, (unsigned long)total_swap_pages);
} }
} else {
if (mem_cgroup_swappiness(memcg))
max += min(READ_ONCE(memcg->swap.max),
(unsigned long)total_swap_pages);
} }
return max; return max;
} }
@ -7334,7 +7334,7 @@ void mem_cgroup_swapout(struct folio *folio, swp_entry_t entry)
if (mem_cgroup_disabled()) if (mem_cgroup_disabled())
return; return;
if (cgroup_subsys_on_dfl(memory_cgrp_subsys)) if (!do_memsw_account())
return; return;
memcg = folio_memcg(folio); memcg = folio_memcg(folio);
@ -7399,7 +7399,7 @@ int __mem_cgroup_try_charge_swap(struct folio *folio, swp_entry_t entry)
struct mem_cgroup *memcg; struct mem_cgroup *memcg;
unsigned short oldid; unsigned short oldid;
if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) if (do_memsw_account())
return 0; return 0;
memcg = folio_memcg(folio); memcg = folio_memcg(folio);
@ -7451,10 +7451,10 @@ void __mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages)
memcg = mem_cgroup_from_id(id); memcg = mem_cgroup_from_id(id);
if (memcg) { if (memcg) {
if (!mem_cgroup_is_root(memcg)) { if (!mem_cgroup_is_root(memcg)) {
if (cgroup_subsys_on_dfl(memory_cgrp_subsys)) if (do_memsw_account())
page_counter_uncharge(&memcg->swap, nr_pages);
else
page_counter_uncharge(&memcg->memsw, nr_pages); page_counter_uncharge(&memcg->memsw, nr_pages);
else
page_counter_uncharge(&memcg->swap, nr_pages);
} }
mod_memcg_state(memcg, MEMCG_SWAP, -nr_pages); mod_memcg_state(memcg, MEMCG_SWAP, -nr_pages);
mem_cgroup_id_put_many(memcg, nr_pages); mem_cgroup_id_put_many(memcg, nr_pages);