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Tue, 3 Jul 2018 15:09:59 +0000 Subject: [PATCH v8 08/17] fs: Propagate shrinker::id to list_lru From: Kirill Tkhai To: vdavydov.dev@gmail.com, shakeelb@google.com, viro@zeniv.linux.org.uk, hannes@cmpxchg.org, mhocko@kernel.org, tglx@linutronix.de, pombredanne@nexb.com, stummala@codeaurora.org, gregkh@linuxfoundation.org, sfr@canb.auug.org.au, guro@fb.com, mka@chromium.org, penguin-kernel@I-love.SAKURA.ne.jp, chris@chris-wilson.co.uk, longman@redhat.com, minchan@kernel.org, ying.huang@intel.com, mgorman@techsingularity.net, jbacik@fb.com, linux@roeck-us.net, linux-kernel@vger.kernel.org, linux-mm@kvack.org, willy@infradead.org, lirongqing@baidu.com, aryabinin@virtuozzo.com, akpm@linux-foundation.org, ktkhai@virtuozzo.com Date: Tue, 03 Jul 2018 18:09:57 +0300 Message-ID: <153063059758.1818.14866596416857717800.stgit@localhost.localdomain> In-Reply-To: <153063036670.1818.16010062622751502.stgit@localhost.localdomain> References: <153063036670.1818.16010062622751502.stgit@localhost.localdomain> User-Agent: StGit/0.18 MIME-Version: 1.0 Content-Type: text/plain; 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This will be used to set correct bit in memcg shrinkers map by lru code in next patches, after there appeared the first related to memcg element in list_lru. Signed-off-by: Kirill Tkhai Acked-by: Vladimir Davydov Tested-by: Shakeel Butt --- fs/super.c | 4 ++-- include/linux/list_lru.h | 17 +++++++++-------- mm/list_lru.c | 11 ++++++++++- mm/workingset.c | 3 ++- 4 files changed, 23 insertions(+), 12 deletions(-) diff --git a/fs/super.c b/fs/super.c index 002e46d874da..f858178f74fe 100644 --- a/fs/super.c +++ b/fs/super.c @@ -260,9 +260,9 @@ static struct super_block *alloc_super(struct fs_context *fc) s->s_shrink.flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE; if (prealloc_shrinker(&s->s_shrink)) goto fail; - if (list_lru_init_memcg(&s->s_dentry_lru)) + if (list_lru_init_memcg(&s->s_dentry_lru, &s->s_shrink)) goto fail; - if (list_lru_init_memcg(&s->s_inode_lru)) + if (list_lru_init_memcg(&s->s_inode_lru, &s->s_shrink)) goto fail; return s; diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h index 5d7f951f4f32..c4cdda4dffa0 100644 --- a/include/linux/list_lru.h +++ b/include/linux/list_lru.h @@ -54,19 +54,20 @@ struct list_lru { bool lock_irq; #ifdef CONFIG_MEMCG_KMEM struct list_head list; + int shrinker_id; #endif }; void list_lru_destroy(struct list_lru *lru); int __list_lru_init(struct list_lru *lru, bool memcg_aware, bool lock_irq, - struct lock_class_key *key); - -#define list_lru_init(lru) __list_lru_init((lru), false, false, \ - NULL) -#define list_lru_init_key(lru, key) __list_lru_init((lru), false, false, \ - (key)) -#define list_lru_init_memcg(lru) __list_lru_init((lru), true, false, \ - NULL) + struct lock_class_key *key, struct shrinker *shrinker); + +#define list_lru_init(lru) \ + __list_lru_init((lru), false, false, NULL, NULL) +#define list_lru_init_key(lru, key) \ + __list_lru_init((lru), false, false, (key), NULL) +#define list_lru_init_memcg(lru, shrinker) \ + __list_lru_init((lru), true, false, NULL, shrinker) int memcg_update_all_list_lrus(int num_memcgs); void memcg_drain_all_list_lrus(int src_idx, int dst_idx); diff --git a/mm/list_lru.c b/mm/list_lru.c index 6743cdb76ea6..f8ae4a04ef36 100644 --- a/mm/list_lru.c +++ b/mm/list_lru.c @@ -559,12 +559,18 @@ static void memcg_destroy_list_lru(struct list_lru *lru) #endif /* CONFIG_MEMCG_KMEM */ int __list_lru_init(struct list_lru *lru, bool memcg_aware, bool lock_irq, - struct lock_class_key *key) + struct lock_class_key *key, struct shrinker *shrinker) { int i; size_t size = sizeof(*lru->node) * nr_node_ids; int err = -ENOMEM; +#ifdef CONFIG_MEMCG_KMEM + if (shrinker) + lru->shrinker_id = shrinker->id; + else + lru->shrinker_id = -1; +#endif memcg_get_cache_ids(); lru->node = kzalloc(size, GFP_KERNEL); @@ -607,6 +613,9 @@ void list_lru_destroy(struct list_lru *lru) kfree(lru->node); lru->node = NULL; +#ifdef CONFIG_MEMCG_KMEM + lru->shrinker_id = -1; +#endif memcg_put_cache_ids(); } EXPORT_SYMBOL_GPL(list_lru_destroy); diff --git a/mm/workingset.c b/mm/workingset.c index b16489c60471..a682306db49b 100644 --- a/mm/workingset.c +++ b/mm/workingset.c @@ -511,7 +511,8 @@ static int __init workingset_init(void) if (ret) goto err; /* list_lru lock nests inside the IRQ-safe i_pages lock */ - ret = __list_lru_init(&shadow_nodes, true, true, &shadow_nodes_key); + ret = __list_lru_init(&shadow_nodes, true, true, &shadow_nodes_key, + &workingset_shadow_shrinker); if (ret) goto err_list_lru; register_shrinker_prepared(&workingset_shadow_shrinker);