The patch titled
Subject: memcg: writeback: use memcg->cgwb_list directly
has been added to the -mm tree. Its filename is
memcg-writeback-use-memcg-cgwb_list-directly.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/memcg-writeback-use-memcg-cgwb_list-directly.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/memcg-writeback-use-memcg-cgwb_list-directly.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Wang Long <wanglong19@xxxxxxxxxxx>
Subject: memcg: writeback: use memcg->cgwb_list directly
mem_cgroup_cgwb_list is a very simple wrapper and it will never be used
outside of code under CONFIG_CGROUP_WRITEBACK. so use memcg->cgwb_list
directly.
Link: http://lkml.kernel.org/r/1524406173-212182-1-git-send-email-wanglong19@xxxxxxxxxxx
Signed-off-by: Wang Long <wanglong19@xxxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memcontrol.h | 1 -
mm/backing-dev.c | 4 ++--
mm/memcontrol.c | 5 -----
3 files changed, 2 insertions(+), 8 deletions(-)
diff -puN include/linux/memcontrol.h~memcg-writeback-use-memcg-cgwb_list-directly include/linux/memcontrol.h
--- a/include/linux/memcontrol.h~memcg-writeback-use-memcg-cgwb_list-directly
+++ a/include/linux/memcontrol.h
@@ -1104,7 +1104,6 @@ static inline void dec_lruvec_page_state
#ifdef CONFIG_CGROUP_WRITEBACK
-struct list_head *mem_cgroup_cgwb_list(struct mem_cgroup *memcg);
struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb);
void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages,
unsigned long *pheadroom, unsigned long *pdirty,
diff -puN mm/backing-dev.c~memcg-writeback-use-memcg-cgwb_list-directly mm/backing-dev.c
--- a/mm/backing-dev.c~memcg-writeback-use-memcg-cgwb_list-directly
+++ a/mm/backing-dev.c
@@ -555,7 +555,7 @@ static int cgwb_create(struct backing_de
memcg = mem_cgroup_from_css(memcg_css);
blkcg_css = cgroup_get_e_css(memcg_css->cgroup, &io_cgrp_subsys);
blkcg = css_to_blkcg(blkcg_css);
- memcg_cgwb_list = mem_cgroup_cgwb_list(memcg);
+ memcg_cgwb_list = &memcg->cgwb_list;
blkcg_cgwb_list = &blkcg->cgwb_list;
/* look up again under lock and discard on blkcg mismatch */
@@ -734,7 +734,7 @@ static void cgwb_bdi_unregister(struct b
*/
void wb_memcg_offline(struct mem_cgroup *memcg)
{
- struct list_head *memcg_cgwb_list = mem_cgroup_cgwb_list(memcg);
+ struct list_head *memcg_cgwb_list = &memcg->cgwb_list;
struct bdi_writeback *wb, *next;
spin_lock_irq(&cgwb_lock);
diff -puN mm/memcontrol.c~memcg-writeback-use-memcg-cgwb_list-directly mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-writeback-use-memcg-cgwb_list-directly
+++ a/mm/memcontrol.c
@@ -3576,11 +3576,6 @@ static int mem_cgroup_oom_control_write(
#ifdef CONFIG_CGROUP_WRITEBACK
-struct list_head *mem_cgroup_cgwb_list(struct mem_cgroup *memcg)
-{
- return &memcg->cgwb_list;
-}
-
static int memcg_wb_domain_init(struct mem_cgroup *memcg, gfp_t gfp)
{
return wb_domain_init(&memcg->cgwb_domain, gfp);
_
Patches currently in -mm which might be from wanglong19@xxxxxxxxxxx are
memcg-writeback-use-memcg-cgwb_list-directly.patch
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