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-rw-r--r--include/linux/swap_cgroup.h4
-rw-r--r--mm/memcontrol.c4
-rw-r--r--mm/swap_cgroup.c7
3 files changed, 8 insertions, 7 deletions
diff --git a/include/linux/swap_cgroup.h b/include/linux/swap_cgroup.h
index b5ec038069da..91cdf12190a0 100644
--- a/include/linux/swap_cgroup.h
+++ b/include/linux/swap_cgroup.h
@@ -6,7 +6,7 @@
#if defined(CONFIG_MEMCG) && defined(CONFIG_SWAP)
-extern void swap_cgroup_record(struct folio *folio, swp_entry_t ent);
+extern void swap_cgroup_record(struct folio *folio, unsigned short id, swp_entry_t ent);
extern unsigned short swap_cgroup_clear(swp_entry_t ent, unsigned int nr_ents);
extern unsigned short lookup_swap_cgroup_id(swp_entry_t ent);
extern int swap_cgroup_swapon(int type, unsigned long max_pages);
@@ -15,7 +15,7 @@ extern void swap_cgroup_swapoff(int type);
#else
static inline
-void swap_cgroup_record(struct folio *folio, swp_entry_t ent)
+void swap_cgroup_record(struct folio *folio, unsigned short id, swp_entry_t ent)
{
}
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 4de6acb9b8ec..8f9b35f80e24 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4993,7 +4993,7 @@ void mem_cgroup_swapout(struct folio *folio, swp_entry_t entry)
mem_cgroup_id_get_many(swap_memcg, nr_entries - 1);
mod_memcg_state(swap_memcg, MEMCG_SWAP, nr_entries);
- swap_cgroup_record(folio, entry);
+ swap_cgroup_record(folio, mem_cgroup_id(swap_memcg), entry);
folio_unqueue_deferred_split(folio);
folio->memcg_data = 0;
@@ -5055,7 +5055,7 @@ int __mem_cgroup_try_charge_swap(struct folio *folio, swp_entry_t entry)
mem_cgroup_id_get_many(memcg, nr_pages - 1);
mod_memcg_state(memcg, MEMCG_SWAP, nr_pages);
- swap_cgroup_record(folio, entry);
+ swap_cgroup_record(folio, mem_cgroup_id(memcg), entry);
return 0;
}
diff --git a/mm/swap_cgroup.c b/mm/swap_cgroup.c
index be39078f255b..1007c30f12e2 100644
--- a/mm/swap_cgroup.c
+++ b/mm/swap_cgroup.c
@@ -58,9 +58,11 @@ static unsigned short __swap_cgroup_id_xchg(struct swap_cgroup *map,
* entries must not have been charged
*
* @folio: the folio that the swap entry belongs to
+ * @id: mem_cgroup ID to be recorded
* @ent: the first swap entry to be recorded
*/
-void swap_cgroup_record(struct folio *folio, swp_entry_t ent)
+void swap_cgroup_record(struct folio *folio, unsigned short id,
+ swp_entry_t ent)
{
unsigned int nr_ents = folio_nr_pages(folio);
struct swap_cgroup *map;
@@ -72,8 +74,7 @@ void swap_cgroup_record(struct folio *folio, swp_entry_t ent)
map = swap_cgroup_ctrl[swp_type(ent)].map;
do {
- old = __swap_cgroup_id_xchg(map, offset,
- mem_cgroup_id(folio_memcg(folio)));
+ old = __swap_cgroup_id_xchg(map, offset, id);
VM_BUG_ON(old);
} while (++offset != end);
}