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authorHui Su2021-09-02 14:59:36 -0700
committerLinus Torvalds2021-09-03 09:58:17 -0700
commit9647875be52b33fe22cb034ec3074896c581543f (patch)
treecda5239fcb015827c95d6108763a399d388ad65b
parent20b51af15e014cac63b58a4f8b8b323ac35bccce (diff)
mm/vmpressure: replace vmpressure_to_css() with vmpressure_to_memcg()
We can get memcg directly form vmpr instead of vmpr->memcg->css->memcg, so add a new func helper vmpressure_to_memcg(). And no code will use vmpressure_to_css(), so delete it. Link: https://lkml.kernel.org/r/20210630112146.455103-1-suhui@zeku.com Signed-off-by: Hui Su <suhui@zeku.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Chris Down <chris@chrisdown.name> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/vmpressure.h2
-rw-r--r--mm/memcontrol.c4
-rw-r--r--mm/vmpressure.c3
3 files changed, 4 insertions, 5 deletions
diff --git a/include/linux/vmpressure.h b/include/linux/vmpressure.h
index 6d28bc433c1c..6a2f51ebbfd3 100644
--- a/include/linux/vmpressure.h
+++ b/include/linux/vmpressure.h
@@ -37,7 +37,7 @@ extern void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio);
extern void vmpressure_init(struct vmpressure *vmpr);
extern void vmpressure_cleanup(struct vmpressure *vmpr);
extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg);
-extern struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr);
+extern struct mem_cgroup *vmpressure_to_memcg(struct vmpressure *vmpr);
extern int vmpressure_register_event(struct mem_cgroup *memcg,
struct eventfd_ctx *eventfd,
const char *args);
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 06ae0075e864..896f0f403c52 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -256,9 +256,9 @@ struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg)
return &memcg->vmpressure;
}
-struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr)
+struct mem_cgroup *vmpressure_to_memcg(struct vmpressure *vmpr)
{
- return &container_of(vmpr, struct mem_cgroup, vmpressure)->css;
+ return container_of(vmpr, struct mem_cgroup, vmpressure);
}
#ifdef CONFIG_MEMCG_KMEM
diff --git a/mm/vmpressure.c b/mm/vmpressure.c
index 9b172561fded..76518e4166dc 100644
--- a/mm/vmpressure.c
+++ b/mm/vmpressure.c
@@ -74,8 +74,7 @@ static struct vmpressure *work_to_vmpressure(struct work_struct *work)
static struct vmpressure *vmpressure_parent(struct vmpressure *vmpr)
{
- struct cgroup_subsys_state *css = vmpressure_to_css(vmpr);
- struct mem_cgroup *memcg = mem_cgroup_from_css(css);
+ struct mem_cgroup *memcg = vmpressure_to_memcg(vmpr);
memcg = parent_mem_cgroup(memcg);
if (!memcg)