The quilt patch titled
Subject: mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol
has been removed from the -mm tree. Its filename was
mm-memcontrol-drop-dead-config_memcg_swap-config-symbol.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol
Date: Mon, 26 Sep 2022 09:57:04 -0400
Since 2d1c498072de ("mm: memcontrol: make swap tracking an integral part
of memory control"), CONFIG_MEMCG_SWAP hasn't been a user-visible config
option anymore, it just means CONFIG_MEMCG && CONFIG_SWAP.
Update the sites accordingly and drop the symbol.
[ While touching the docs, remove two references to CONFIG_MEMCG_KMEM,
which hasn't been a user-visible symbol for over half a decade. ]
Link: https://lkml.kernel.org/r/20220926135704.400818-5-hannes@xxxxxxxxxxx
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/cgroup-v1/memory.rst | 4 +---
arch/mips/configs/db1xxx_defconfig | 1 -
arch/mips/configs/generic_defconfig | 1 -
arch/powerpc/configs/powernv_defconfig | 1 -
arch/powerpc/configs/pseries_defconfig | 1 -
arch/sh/configs/sdk7786_defconfig | 1 -
arch/sh/configs/urquell_defconfig | 1 -
include/linux/swap.h | 2 +-
include/linux/swap_cgroup.h | 4 ++--
init/Kconfig | 5 -----
mm/Makefile | 4 +++-
mm/memcontrol.c | 6 +++---
tools/testing/selftests/cgroup/config | 1 -
13 files changed, 10 insertions(+), 22 deletions(-)
--- a/arch/mips/configs/db1xxx_defconfig~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/arch/mips/configs/db1xxx_defconfig
@@ -9,7 +9,6 @@ CONFIG_HIGH_RES_TIMERS=y
CONFIG_LOG_BUF_SHIFT=16
CONFIG_CGROUPS=y
CONFIG_MEMCG=y
-CONFIG_MEMCG_SWAP=y
CONFIG_BLK_CGROUP=y
CONFIG_CGROUP_SCHED=y
CONFIG_CFS_BANDWIDTH=y
--- a/arch/mips/configs/generic_defconfig~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/arch/mips/configs/generic_defconfig
@@ -3,7 +3,6 @@ CONFIG_NO_HZ_IDLE=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_MEMCG=y
-CONFIG_MEMCG_SWAP=y
CONFIG_BLK_CGROUP=y
CONFIG_CFS_BANDWIDTH=y
CONFIG_RT_GROUP_SCHED=y
--- a/arch/powerpc/configs/powernv_defconfig~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/arch/powerpc/configs/powernv_defconfig
@@ -17,7 +17,6 @@ CONFIG_LOG_CPU_MAX_BUF_SHIFT=13
CONFIG_NUMA_BALANCING=y
CONFIG_CGROUPS=y
CONFIG_MEMCG=y
-CONFIG_MEMCG_SWAP=y
CONFIG_CGROUP_SCHED=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CPUSETS=y
--- a/arch/powerpc/configs/pseries_defconfig~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/arch/powerpc/configs/pseries_defconfig
@@ -16,7 +16,6 @@ CONFIG_LOG_CPU_MAX_BUF_SHIFT=13
CONFIG_NUMA_BALANCING=y
CONFIG_CGROUPS=y
CONFIG_MEMCG=y
-CONFIG_MEMCG_SWAP=y
CONFIG_CGROUP_SCHED=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CPUSETS=y
--- a/arch/sh/configs/sdk7786_defconfig~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/arch/sh/configs/sdk7786_defconfig
@@ -16,7 +16,6 @@ CONFIG_CPUSETS=y
# CONFIG_PROC_PID_CPUSET is not set
CONFIG_CGROUP_CPUACCT=y
CONFIG_CGROUP_MEMCG=y
-CONFIG_CGROUP_MEMCG_SWAP=y
CONFIG_CGROUP_SCHED=y
CONFIG_RT_GROUP_SCHED=y
CONFIG_BLK_CGROUP=y
--- a/arch/sh/configs/urquell_defconfig~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/arch/sh/configs/urquell_defconfig
@@ -14,7 +14,6 @@ CONFIG_CPUSETS=y
# CONFIG_PROC_PID_CPUSET is not set
CONFIG_CGROUP_CPUACCT=y
CONFIG_CGROUP_MEMCG=y
-CONFIG_CGROUP_MEMCG_SWAP=y
CONFIG_CGROUP_SCHED=y
CONFIG_RT_GROUP_SCHED=y
CONFIG_BLK_DEV_INITRD=y
--- a/Documentation/admin-guide/cgroup-v1/memory.rst~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/Documentation/admin-guide/cgroup-v1/memory.rst
@@ -299,7 +299,7 @@ Per-node-per-memcgroup LRU (cgroup's pri
lruvec->lru_lock; PG_lru bit of page->flags is cleared before
isolating a page from its LRU under lruvec->lru_lock.
-2.7 Kernel Memory Extension (CONFIG_MEMCG_KMEM)
+2.7 Kernel Memory Extension
-----------------------------------------------
With the Kernel memory extension, the Memory Controller is able to limit
@@ -386,8 +386,6 @@ U != 0, K >= U:
a. Enable CONFIG_CGROUPS
b. Enable CONFIG_MEMCG
-c. Enable CONFIG_MEMCG_SWAP (to use swap extension)
-d. Enable CONFIG_MEMCG_KMEM (to use kmem extension)
3.1. Prepare the cgroups (see cgroups.txt, Why are cgroups needed?)
-------------------------------------------------------------------
--- a/include/linux/swap_cgroup.h~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/include/linux/swap_cgroup.h
@@ -4,7 +4,7 @@
#include <linux/swap.h>
-#ifdef CONFIG_MEMCG_SWAP
+#if defined(CONFIG_MEMCG) && defined(CONFIG_SWAP)
extern unsigned short swap_cgroup_cmpxchg(swp_entry_t ent,
unsigned short old, unsigned short new);
@@ -40,6 +40,6 @@ static inline void swap_cgroup_swapoff(i
return;
}
-#endif /* CONFIG_MEMCG_SWAP */
+#endif
#endif /* __LINUX_SWAP_CGROUP_H */
--- a/include/linux/swap.h~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/include/linux/swap.h
@@ -666,7 +666,7 @@ static inline void folio_throttle_swapra
cgroup_throttle_swaprate(&folio->page, gfp);
}
-#ifdef CONFIG_MEMCG_SWAP
+#if defined(CONFIG_MEMCG) && defined(CONFIG_SWAP)
void mem_cgroup_swapout(struct folio *folio, swp_entry_t entry);
int __mem_cgroup_try_charge_swap(struct folio *folio, swp_entry_t entry);
static inline int mem_cgroup_try_charge_swap(struct folio *folio,
--- a/init/Kconfig~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/init/Kconfig
@@ -958,11 +958,6 @@ config MEMCG
help
Provides control over the memory footprint of tasks in a cgroup.
-config MEMCG_SWAP
- bool
- depends on MEMCG && SWAP
- default y
-
config MEMCG_KMEM
bool
depends on MEMCG && !SLOB
--- a/mm/Makefile~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/mm/Makefile
@@ -98,7 +98,9 @@ obj-$(CONFIG_DEVICE_MIGRATION) += migrat
obj-$(CONFIG_TRANSPARENT_HUGEPAGE) += huge_memory.o khugepaged.o
obj-$(CONFIG_PAGE_COUNTER) += page_counter.o
obj-$(CONFIG_MEMCG) += memcontrol.o vmpressure.o
-obj-$(CONFIG_MEMCG_SWAP) += swap_cgroup.o
+ifdef CONFIG_SWAP
+obj-$(CONFIG_MEMCG) += swap_cgroup.o
+endif
obj-$(CONFIG_CGROUP_HUGETLB) += hugetlb_cgroup.o
obj-$(CONFIG_GUP_TEST) += gup_test.o
obj-$(CONFIG_MEMORY_FAILURE) += memory-failure.o
--- a/mm/memcontrol.c~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/mm/memcontrol.c
@@ -3423,7 +3423,7 @@ void split_page_memcg(struct page *head,
css_get_many(&memcg->css, nr - 1);
}
-#ifdef CONFIG_MEMCG_SWAP
+#ifdef CONFIG_SWAP
/**
* mem_cgroup_move_swap_account - move swap charge and swap_cgroup's record.
* @entry: swap entry to be moved
@@ -7296,7 +7296,7 @@ static int __init mem_cgroup_init(void)
}
subsys_initcall(mem_cgroup_init);
-#ifdef CONFIG_MEMCG_SWAP
+#ifdef CONFIG_SWAP
static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg)
{
while (!refcount_inc_not_zero(&memcg->id.ref)) {
@@ -7788,4 +7788,4 @@ static int __init mem_cgroup_swap_init(v
}
subsys_initcall(mem_cgroup_swap_init);
-#endif /* CONFIG_MEMCG_SWAP */
+#endif /* CONFIG_SWAP */
--- a/tools/testing/selftests/cgroup/config~mm-memcontrol-drop-dead-config_memcg_swap-config-symbol
+++ a/tools/testing/selftests/cgroup/config
@@ -4,5 +4,4 @@ CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_SCHED=y
CONFIG_MEMCG=y
CONFIG_MEMCG_KMEM=y
-CONFIG_MEMCG_SWAP=y
CONFIG_PAGE_COUNTER=y
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
mm-vmscan-fix-extreme-overreclaim-and-swap-floods.patch
