The patch titled
Subject: mm/memcontrol:rewrite mem_cgroup_page_lruvec()
has been added to the -mm tree. Its filename is
mm-memcontrol-rewrite-mem_cgroup_page_lruvec.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-memcontrol-rewrite-mem_cgroup_page_lruvec.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-memcontrol-rewrite-mem_cgroup_page_lruvec.patch
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------------------------------------------------------
From: Hui Su <sh_def@xxxxxxx>
Subject: mm/memcontrol:rewrite mem_cgroup_page_lruvec()
mem_cgroup_page_lruvec() in memcontrol.c and mem_cgroup_lruvec() in
memcontrol.h is very similar except for the param(page and memcg) which
also can be convert to each other.
So rewrite mem_cgroup_page_lruvec() with mem_cgroup_lruvec().
Link: https://lkml.kernel.org/r/20201108143731.GA74138@rlk
Signed-off-by: Hui Su <sh_def@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
Acked-by: Roman Gushchin <guro@xxxxxx>
Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
Cc: Yafang Shao <laoar.shao@xxxxxxxxx>
Cc: Chris Down <chris@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memcontrol.h | 16 +++++++++++++--
mm/memcontrol.c | 37 -----------------------------------
2 files changed, 14 insertions(+), 39 deletions(-)
--- a/include/linux/memcontrol.h~mm-memcontrol-rewrite-mem_cgroup_page_lruvec
+++ a/include/linux/memcontrol.h
@@ -631,9 +631,10 @@ mem_cgroup_nodeinfo(struct mem_cgroup *m
/**
* mem_cgroup_lruvec - get the lru list vector for a memcg & node
* @memcg: memcg of the wanted lruvec
+ * @pgdat: pglist_data
*
* Returns the lru list vector holding pages for a given @memcg &
- * @node combination. This can be the node lruvec, if the memory
+ * @pgdat combination. This can be the node lruvec, if the memory
* controller is disabled.
*/
static inline struct lruvec *mem_cgroup_lruvec(struct mem_cgroup *memcg,
@@ -663,7 +664,18 @@ out:
return lruvec;
}
-struct lruvec *mem_cgroup_page_lruvec(struct page *, struct pglist_data *);
+/**
+ * mem_cgroup_page_lruvec - return lruvec for isolating/putting an LRU page
+ * @page: the page
+ * @pgdat: pgdat of the page
+ *
+ * This function relies on page->mem_cgroup being stable.
+ */
+static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page,
+ struct pglist_data *pgdat)
+{
+ return mem_cgroup_lruvec(page_memcg(page), pgdat);
+}
struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
--- a/mm/memcontrol.c~mm-memcontrol-rewrite-mem_cgroup_page_lruvec
+++ a/mm/memcontrol.c
@@ -1311,43 +1311,6 @@ int mem_cgroup_scan_tasks(struct mem_cgr
}
/**
- * mem_cgroup_page_lruvec - return lruvec for isolating/putting an LRU page
- * @page: the page
- * @pgdat: pgdat of the page
- *
- * This function relies on page's memcg being stable - see the
- * access rules in commit_charge().
- */
-struct lruvec *mem_cgroup_page_lruvec(struct page *page, struct pglist_data *pgdat)
-{
- struct mem_cgroup_per_node *mz;
- struct mem_cgroup *memcg;
- struct lruvec *lruvec;
-
- if (mem_cgroup_disabled()) {
- lruvec = &pgdat->__lruvec;
- goto out;
- }
-
- memcg = page_memcg(page);
- VM_WARN_ON_ONCE_PAGE(!memcg, page);
- if (!memcg)
- memcg = root_mem_cgroup;
-
- mz = mem_cgroup_page_nodeinfo(memcg, page);
- lruvec = &mz->lruvec;
-out:
- /*
- * Since a node can be onlined after the mem_cgroup was created,
- * we have to be prepared to initialize lruvec->zone here;
- * and if offlined then reonlined, we need to reinitialize it.
- */
- if (unlikely(lruvec->pgdat != pgdat))
- lruvec->pgdat = pgdat;
- return lruvec;
-}
-
-/**
* mem_cgroup_update_lru_size - account for adding or removing an lru page
* @lruvec: mem_cgroup per zone lru vector
* @lru: index of lru list the page is sitting on
_
Patches currently in -mm which might be from sh_def@xxxxxxx are
mmslab_common-use-list_for_each_entry-in-dump_unreclaimable_slab.patch
mm-memcontrol-rewrite-mem_cgroup_page_lruvec.patch
mm-hugetlbc-just-use-put_page_testzero-instead-of-page_count.patch
mm-oom_kill-change-comment-and-rename-is_dump_unreclaim_slabs.patch
acctc-use-elif-instead-of-end-and-elif.patch
