From: Kirill Tkhai <ktk...@virtuozzo.com> This is just refactoring to allow the next patches to have memcg pointer in list_lru_from_kmem().
Link: http://lkml.kernel.org/r/153063060664.1818.9541345386733498582.stgit@localhost.localdomain Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com> Acked-by: Vladimir Davydov <vdavydov....@gmail.com> Tested-by: Shakeel Butt <shake...@google.com> Cc: Al Viro <v...@zeniv.linux.org.uk> Cc: Andrey Ryabinin <aryabi...@virtuozzo.com> Cc: Chris Wilson <ch...@chris-wilson.co.uk> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: Guenter Roeck <li...@roeck-us.net> Cc: "Huang, Ying" <ying.hu...@intel.com> Cc: Johannes Weiner <han...@cmpxchg.org> Cc: Josef Bacik <jba...@fb.com> Cc: Li RongQing <lirongq...@baidu.com> Cc: Matthew Wilcox <wi...@infradead.org> Cc: Matthias Kaehlcke <m...@chromium.org> Cc: Mel Gorman <mgor...@techsingularity.net> Cc: Michal Hocko <mho...@kernel.org> Cc: Minchan Kim <minc...@kernel.org> Cc: Philippe Ombredanne <pombreda...@nexb.com> Cc: Roman Gushchin <g...@fb.com> Cc: Sahitya Tummala <stumm...@codeaurora.org> Cc: Stephen Rothwell <s...@canb.auug.org.au> Cc: Tetsuo Handa <penguin-ker...@i-love.sakura.ne.jp> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Waiman Long <long...@redhat.com> Signed-off-by: Andrew Morton <a...@linux-foundation.org> Signed-off-by: Linus Torvalds <torva...@linux-foundation.org> (cherry picked from commit 44bd4a4759d5a714767aa6be7e806ab54b7fa3a8) Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.com> --- mm/list_lru.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/mm/list_lru.c b/mm/list_lru.c index 077956f8d58f..55a76465f7a2 100644 --- a/mm/list_lru.c +++ b/mm/list_lru.c @@ -65,18 +65,24 @@ static __always_inline struct mem_cgroup *mem_cgroup_from_kmem(void *ptr) } static inline struct list_lru_one * -list_lru_from_kmem(struct list_lru_node *nlru, void *ptr) +list_lru_from_kmem(struct list_lru_node *nlru, void *ptr, + struct mem_cgroup **memcg_ptr) { - struct mem_cgroup *memcg; + struct list_lru_one *l = &nlru->lru; + struct mem_cgroup *memcg = NULL; if (!nlru->memcg_lrus) - return &nlru->lru; + goto out; memcg = mem_cgroup_from_kmem(ptr); if (!memcg) - return &nlru->lru; + goto out; - return list_lru_from_memcg_idx(nlru, memcg_cache_id(memcg)); + l = list_lru_from_memcg_idx(nlru, memcg_cache_id(memcg)); +out: + if (memcg_ptr) + *memcg_ptr = memcg; + return l; } #else static void list_lru_register(struct list_lru *lru) @@ -99,8 +105,11 @@ list_lru_from_memcg_idx(struct list_lru_node *nlru, int idx) } static inline struct list_lru_one * -list_lru_from_kmem(struct list_lru_node *nlru, void *ptr) +list_lru_from_kmem(struct list_lru_node *nlru, void *ptr, + struct mem_cgroup **memcg_ptr) { + if (memcg_ptr) + *memcg_ptr = NULL; return &nlru->lru; } #endif /* CONFIG_MEMCG_KMEM */ @@ -113,7 +122,7 @@ bool list_lru_add(struct list_lru *lru, struct list_head *item) spin_lock(&nlru->lock); if (list_empty(item)) { - l = list_lru_from_kmem(nlru, item); + l = list_lru_from_kmem(nlru, item, NULL); list_add_tail(item, &l->list); l->nr_items++; nlru->nr_items++; @@ -133,7 +142,7 @@ bool list_lru_del(struct list_lru *lru, struct list_head *item) spin_lock(&nlru->lock); if (!list_empty(item)) { - l = list_lru_from_kmem(nlru, item); + l = list_lru_from_kmem(nlru, item, NULL); list_del_init(item); l->nr_items--; nlru->nr_items--; -- 2.24.1 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
