The patch titled
Subject: mm: list_lru: rename memcg_drain_all_list_lrus to memcg_reparent_list_lrus
has been added to the -mm tree. Its filename is
mm-list_lru-rename-memcg_drain_all_list_lrus-to-memcg_reparent_list_lrus.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-list_lru-rename-memcg_drain_all_list_lrus-to-memcg_reparent_list_lrus.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-list_lru-rename-memcg_drain_all_list_lrus-to-memcg_reparent_list_lrus.patch
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------------------------------------------------------
From: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Subject: mm: list_lru: rename memcg_drain_all_list_lrus to memcg_reparent_list_lrus
The purpose of the memcg_drain_all_list_lrus() is list_lrus reparenting.
It is very similar to memcg_reparent_objcgs(). Rename it to
memcg_reparent_list_lrus() so that the name can more consistent with
memcg_reparent_objcgs().
Link: https://lkml.kernel.org/r/20220228122126.37293-12-songmuchun@xxxxxxxxxxxxx
Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Alex Shi <alexs@xxxxxxxxxx>
Cc: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
Cc: Chao Yu <chao@xxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Fam Zheng <fam.zheng@xxxxxxxxxxxxx>
Cc: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Kari Argillander <kari.argillander@xxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Cc: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Wei Yang <richard.weiyang@xxxxxxxxx>
Cc: Xiongchun Duan <duanxiongchun@xxxxxxxxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/list_lru.h | 2 +-
mm/list_lru.c | 24 ++++++++++++------------
mm/memcontrol.c | 6 +++---
3 files changed, 16 insertions(+), 16 deletions(-)
--- a/include/linux/list_lru.h~mm-list_lru-rename-memcg_drain_all_list_lrus-to-memcg_reparent_list_lrus
+++ a/include/linux/list_lru.h
@@ -78,7 +78,7 @@ int __list_lru_init(struct list_lru *lru
int memcg_list_lru_alloc(struct mem_cgroup *memcg, struct list_lru *lru,
gfp_t gfp);
int memcg_update_all_list_lrus(int num_memcgs);
-void memcg_drain_all_list_lrus(struct mem_cgroup *src, struct mem_cgroup *dst);
+void memcg_reparent_list_lrus(struct mem_cgroup *memcg, struct mem_cgroup *parent);
/**
* list_lru_add: add an element to the lru list's tail
--- a/mm/list_lru.c~mm-list_lru-rename-memcg_drain_all_list_lrus-to-memcg_reparent_list_lrus
+++ a/mm/list_lru.c
@@ -457,8 +457,8 @@ int memcg_update_all_list_lrus(int new_s
return ret;
}
-static void memcg_drain_list_lru_node(struct list_lru *lru, int nid,
- int src_idx, struct mem_cgroup *dst_memcg)
+static void memcg_reparent_list_lru_node(struct list_lru *lru, int nid,
+ int src_idx, struct mem_cgroup *dst_memcg)
{
struct list_lru_node *nlru = &lru->node[nid];
int dst_idx = dst_memcg->kmemcg_id;
@@ -486,22 +486,22 @@ out:
spin_unlock_irq(&nlru->lock);
}
-static void memcg_drain_list_lru(struct list_lru *lru,
- int src_idx, struct mem_cgroup *dst_memcg)
+static void memcg_reparent_list_lru(struct list_lru *lru,
+ int src_idx, struct mem_cgroup *dst_memcg)
{
int i;
for_each_node(i)
- memcg_drain_list_lru_node(lru, i, src_idx, dst_memcg);
+ memcg_reparent_list_lru_node(lru, i, src_idx, dst_memcg);
memcg_list_lru_free(lru, src_idx);
}
-void memcg_drain_all_list_lrus(struct mem_cgroup *src, struct mem_cgroup *dst)
+void memcg_reparent_list_lrus(struct mem_cgroup *memcg, struct mem_cgroup *parent)
{
struct cgroup_subsys_state *css;
struct list_lru *lru;
- int src_idx = src->kmemcg_id;
+ int src_idx = memcg->kmemcg_id;
/*
* Change kmemcg_id of this cgroup and all its descendants to the
@@ -517,17 +517,17 @@ void memcg_drain_all_list_lrus(struct me
* call.
*/
rcu_read_lock();
- css_for_each_descendant_pre(css, &src->css) {
- struct mem_cgroup *memcg;
+ css_for_each_descendant_pre(css, &memcg->css) {
+ struct mem_cgroup *child;
- memcg = mem_cgroup_from_css(css);
- memcg->kmemcg_id = dst->kmemcg_id;
+ child = mem_cgroup_from_css(css);
+ child->kmemcg_id = parent->kmemcg_id;
}
rcu_read_unlock();
mutex_lock(&list_lrus_mutex);
list_for_each_entry(lru, &memcg_list_lrus, list)
- memcg_drain_list_lru(lru, src_idx, dst);
+ memcg_reparent_list_lru(lru, src_idx, parent);
mutex_unlock(&list_lrus_mutex);
}
--- a/mm/memcontrol.c~mm-list_lru-rename-memcg_drain_all_list_lrus-to-memcg_reparent_list_lrus
+++ a/mm/memcontrol.c
@@ -3707,7 +3707,7 @@ static void memcg_offline_kmem(struct me
memcg_reparent_objcgs(memcg, parent);
/*
- * memcg_drain_all_list_lrus() can change memcg->kmemcg_id.
+ * memcg_reparent_list_lrus() can change memcg->kmemcg_id.
* Cache it to local @kmemcg_id.
*/
kmemcg_id = memcg->kmemcg_id;
@@ -3716,9 +3716,9 @@ static void memcg_offline_kmem(struct me
* After we have finished memcg_reparent_objcgs(), all list_lrus
* corresponding to this cgroup are guaranteed to remain empty.
* The ordering is imposed by list_lru_node->lock taken by
- * memcg_drain_all_list_lrus().
+ * memcg_reparent_list_lrus().
*/
- memcg_drain_all_list_lrus(memcg, parent);
+ memcg_reparent_list_lrus(memcg, parent);
memcg_free_cache_id(kmemcg_id);
}
_
Patches currently in -mm which might be from songmuchun@xxxxxxxxxxxxx are
mm-list_lru-transpose-the-array-of-per-node-per-memcg-lru-lists.patch
mm-introduce-kmem_cache_alloc_lru.patch
fs-introduce-alloc_inode_sb-to-allocate-filesystems-specific-inode.patch
fs-allocate-inode-by-using-alloc_inode_sb.patch
f2fs-allocate-inode-by-using-alloc_inode_sb.patch
nfs42-use-a-specific-kmem_cache-to-allocate-nfs4_xattr_entry.patch
mm-dcache-use-kmem_cache_alloc_lru-to-allocate-dentry.patch
xarray-use-kmem_cache_alloc_lru-to-allocate-xa_node.patch
mm-memcontrol-move-memcg_online_kmem-to-mem_cgroup_css_online.patch
mm-list_lru-allocate-list_lru_one-only-when-needed.patch
mm-list_lru-rename-memcg_drain_all_list_lrus-to-memcg_reparent_list_lrus.patch
mm-list_lru-replace-linear-array-with-xarray.patch
mm-memcontrol-reuse-memory-cgroup-id-for-kmem-id.patch
mm-memcontrol-fix-cannot-alloc-the-maximum-memcg-id.patch
mm-list_lru-rename-list_lru_per_memcg-to-list_lru_memcg.patch
mm-memcontrol-rename-memcg_cache_id-to-memcg_kmem_id.patch
mm-thp-fix-wrong-cache-flush-in-remove_migration_pmd.patch
mm-fix-missing-cache-flush-for-all-tail-pages-of-compound-page.patch
mm-hugetlb-fix-missing-cache-flush-in-copy_huge_page_from_user.patch
mm-hugetlb-fix-missing-cache-flush-in-hugetlb_mcopy_atomic_pte.patch
mm-shmem-fix-missing-cache-flush-in-shmem_mfill_atomic_pte.patch
mm-userfaultfd-fix-missing-cache-flush-in-mcopy_atomic_pte-and-__mcopy_atomic.patch
mm-replace-multiple-dcache-flush-with-flush_dcache_folio.patch
mm-hugetlb-free-the-2nd-vmemmap-page-associated-with-each-hugetlb-page.patch
mm-hugetlb-replace-hugetlb_free_vmemmap_enabled-with-a-static_key.patch
mm-sparsemem-use-page-table-lock-to-protect-kernel-pmd-operations.patch
selftests-vm-add-a-hugetlb-test-case.patch
mm-sparsemem-move-vmemmap-related-to-hugetlb-to-config_hugetlb_page_free_vmemmap.patch
