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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1708517591; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Bz0cGVE6WLA7e0c4EkbAqLj7Vrv2Vyq9GZ8uOCbwj1A=; b=CpeiNZrZjiLtxn4Z3YUU5MaXkCDTRZld89DR18NlWJCzgwcmoiU5JeeHp9r8ObETMn3otk eTpYeU1WSTuDozM9Idjqi+S6QnWvwPCXGrumeo8uKgQ0IugTfladj4nkro5cnq7Q/xO9x7 UMTqigC7MoVqBL7Auc87Oul3z9zJuxI= From: Chengming Zhou Date: Wed, 21 Feb 2024 12:12:53 +0000 Subject: [PATCH 1/2] mm, slab: remove unused object_size parameter in kmem_cache_flags() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240221-slab-cleanup-v1-1-63382f41d699@linux.dev> References: <20240221-slab-cleanup-v1-0-63382f41d699@linux.dev> In-Reply-To: <20240221-slab-cleanup-v1-0-63382f41d699@linux.dev> To: Pekka Enberg , Joonsoo Kim , Andrew Morton , David Rientjes , Christoph Lameter , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Vlastimil Babka , Roman Gushchin Cc: Chengming Zhou , linux-mm@kvack.org, linux-kernel@vger.kernel.org X-Developer-Signature: v=1; a=ed25519-sha256; t=1708517585; l=2862; i=chengming.zhou@linux.dev; s=20240220; h=from:subject:message-id; bh=nk9RpluGr0tF6v2tluYj3gtiA6vjGhoHRasqnmMVpqo=; b=Vxbg1J2RwEx3Y/a5Ivg5HMPbt0xZi3xKziMxqbb5re7o+KxAFmvs+ke8YVeB6B6zuUoMssnAF D4gzuY3tfmrA8fYBTtMNySrGukRjESuSPIx1SroYlU+GZ9XiSc7H28A X-Developer-Key: i=chengming.zhou@linux.dev; a=ed25519; pk=5+68Wfci+T30FoQos5RH+hfToF6SlC+S9LMPSPBFWuw= X-Migadu-Flow: FLOW_OUT X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791510568358337212 X-GMAIL-MSGID: 1791510568358337212 We don't need the object_size parameter in kmem_cache_flags(), so just remove it. Signed-off-by: Chengming Zhou --- mm/slab.h | 3 +-- mm/slab_common.c | 2 +- mm/slub.c | 9 +++------ 3 files changed, 5 insertions(+), 9 deletions(-) diff --git a/mm/slab.h b/mm/slab.h index 54deeb0428c6..161a3fe5d573 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -435,8 +435,7 @@ struct kmem_cache * __kmem_cache_alias(const char *name, unsigned int size, unsigned int align, slab_flags_t flags, void (*ctor)(void *)); -slab_flags_t kmem_cache_flags(unsigned int object_size, - slab_flags_t flags, const char *name); +slab_flags_t kmem_cache_flags(slab_flags_t flags, const char *name); static inline bool is_kmalloc_cache(struct kmem_cache *s) { diff --git a/mm/slab_common.c b/mm/slab_common.c index 238293b1dbe1..e86557397a61 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -172,7 +172,7 @@ struct kmem_cache *find_mergeable(unsigned int size, unsigned int align, size = ALIGN(size, sizeof(void *)); align = calculate_alignment(flags, align, size); size = ALIGN(size, align); - flags = kmem_cache_flags(size, flags, name); + flags = kmem_cache_flags(flags, name); if (flags & SLAB_NEVER_MERGE) return NULL; diff --git a/mm/slub.c b/mm/slub.c index 2ef88bbf56a3..95700f2b17ae 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1764,7 +1764,6 @@ __setup("slub_debug", setup_slub_debug); /* * kmem_cache_flags - apply debugging options to the cache - * @object_size: the size of an object without meta data * @flags: flags to set * @name: name of the cache * @@ -1773,8 +1772,7 @@ __setup("slub_debug", setup_slub_debug); * slub_debug=,, ... * then only the select slabs will receive the debug option(s). */ -slab_flags_t kmem_cache_flags(unsigned int object_size, - slab_flags_t flags, const char *name) +slab_flags_t kmem_cache_flags(slab_flags_t flags, const char *name) { char *iter; size_t len; @@ -1850,8 +1848,7 @@ static inline void add_full(struct kmem_cache *s, struct kmem_cache_node *n, struct slab *slab) {} static inline void remove_full(struct kmem_cache *s, struct kmem_cache_node *n, struct slab *slab) {} -slab_flags_t kmem_cache_flags(unsigned int object_size, - slab_flags_t flags, const char *name) +slab_flags_t kmem_cache_flags(slab_flags_t flags, const char *name) { return flags; } @@ -5104,7 +5101,7 @@ static int calculate_sizes(struct kmem_cache *s) static int kmem_cache_open(struct kmem_cache *s, slab_flags_t flags) { - s->flags = kmem_cache_flags(s->size, flags, s->name); + s->flags = kmem_cache_flags(flags, s->name); #ifdef CONFIG_SLAB_FREELIST_HARDENED s->random = get_random_long(); #endif From patchwork Wed Feb 21 12:12:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chengming Zhou X-Patchwork-Id: 204192 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:693c:2685:b0:108:e6aa:91d0 with SMTP id mn5csp994956dyc; Wed, 21 Feb 2024 04:13:47 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCVTm+dIlvqISL9Fv39Q1wtmIHyyvo04l1L9FYC0UxxWmuRvEFR5xAZo+OEJdbPtayjRIr8G8xNwEmzkAiI3Agt+GIxOrg== X-Google-Smtp-Source: AGHT+IFL5LU1uCs4Pft6QUv/lTY2ysLoW13yXmSpxYC8gxP2D+In7lXYs5jXOT4oMYsbxWQvkPOM X-Received: by 2002:ad4:5ba5:0:b0:68f:8750:61a0 with SMTP id 5-20020ad45ba5000000b0068f875061a0mr7460068qvq.25.1708517627607; Wed, 21 Feb 2024 04:13:47 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1708517627; cv=pass; d=google.com; s=arc-20160816; b=ADvOyBd8Gu76WhA/++/gfJiR8rByrMqQQAcQ8Rf8xQ44hAzPqY0kAQ9RJ5GloDkOtY wK7ASmux50KJj20sE5CeTgpZnHfHMl6eMXhpRz0OvN5Ukh9JUIH+EBDxoevYNIPXmrdg lioCs+9UFsoUieeTOcaSMXAIZQgFCeqbQAV/wnrJr2PvFjNjyBpy6wwXMCt4mn9zwiFY nJzx4LyFd2jOvd9A+asjG6sdFhTQOIP43QXFOt4SUYN2f2vmcXk2+g8T4JI7MiYrnRPk svehrU2VCt8b6nNGmPFHTNT+NuMO0y65XI3eo5+XNk7Un4hYMIMUTDvzleqVegTq8WI9 Bj1Q== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:list-unsubscribe:list-subscribe:list-id:precedence :subject:date:from:dkim-signature; bh=qhS11vlbSRPVjtePx2vj2SfRKzyV/eHJgrhw6EiukQI=; fh=DO2IUtP4cPqHZ0Pj1sYLduHQ0jTv4vnm8vEspxEGvsw=; b=CWIbqzuFCktRlK5mDBeHH/XbDR8mxYlc8TpZ6ZY8wCNtr4Hp7wJ9yRfwDJ7RblXsRS l1uB4Nx7cIpszFb4d4PHtr20MdxLMpC96HSBqI5VeBxzPgPZzG2WMbPrDD62TAzaCFL5 lTJNo0gbiY0zt1e9dDPtioS6E6rguObpf4bxawpNoBLVuwsuaUTSuX0qCl08vSBmmfSN qls6x3Nvwzt+CnmUv0s39zKeLaudYGIyN83ivBVHE4luHsFCkXxaDCi/TNd3f03MluBK fW7Qqa/A/H4P+LwoVk8ucWJKW2uJMGmFzinwPZj09We97zhH12SvpOag9zDeszuFsaJl RKkw==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@linux.dev header.s=key1 header.b=mteirsb+; arc=pass (i=1 spf=pass spfdomain=linux.dev dkim=pass dkdomain=linux.dev dmarc=pass fromdomain=linux.dev); spf=pass (google.com: domain of linux-kernel+bounces-74689-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) smtp.mailfrom="linux-kernel+bounces-74689-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.dev Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. 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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1708517594; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qhS11vlbSRPVjtePx2vj2SfRKzyV/eHJgrhw6EiukQI=; b=mteirsb+AwFzqqexC55Jbjfm6efaZXq7mGfkk8IMH14fHRl1HuaJkF4MVDThAb1urEtC/4 BTrNOQrySCuH5Xei2D2GZSWyUWkUztG/0JdZBft/y7yHadlE6Vxw9e7zYsisbcduj/GOix ObbyANIoXE4b16ue/uDg/afpdLYdq6k= From: Chengming Zhou Date: Wed, 21 Feb 2024 12:12:54 +0000 Subject: [PATCH 2/2] mm, slab: fix the comment Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240221-slab-cleanup-v1-2-63382f41d699@linux.dev> References: <20240221-slab-cleanup-v1-0-63382f41d699@linux.dev> In-Reply-To: <20240221-slab-cleanup-v1-0-63382f41d699@linux.dev> To: Pekka Enberg , Joonsoo Kim , Andrew Morton , David Rientjes , Christoph Lameter , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Vlastimil Babka , Roman Gushchin Cc: Chengming Zhou , linux-mm@kvack.org, linux-kernel@vger.kernel.org X-Developer-Signature: v=1; a=ed25519-sha256; t=1708517585; l=780; i=chengming.zhou@linux.dev; s=20240220; h=from:subject:message-id; bh=ofDIzQwuszXOaZHAYe8/D7AxU3OQRgHCtFquTvgqqfY=; b=9SVMJ2TH7SmFMqZ6TgcaMs/Z/nVtEURX7uP3QgENgkurJ8/77EOzV8658D0efom6qkPkGuVqp kp/Iejh0mjvAiWCJXNazK9Uny3roCoOMjFtYej0VrI0+uCtwsertYQi X-Developer-Key: i=chengming.zhou@linux.dev; a=ed25519; pk=5+68Wfci+T30FoQos5RH+hfToF6SlC+S9LMPSPBFWuw= X-Migadu-Flow: FLOW_OUT X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791510580149912068 X-GMAIL-MSGID: 1791510580149912068 The partial slabs on cpu partial list are not frozen after the commit 8cd3fa428b56 ("slub: Delay freezing of partial slabs") merged. So fix the comment. Signed-off-by: Chengming Zhou --- mm/slub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/slub.c b/mm/slub.c index 95700f2b17ae..d5ca58e65053 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -391,7 +391,7 @@ struct kmem_cache_cpu { }; struct slab *slab; /* The slab from which we are allocating */ #ifdef CONFIG_SLUB_CPU_PARTIAL - struct slab *partial; /* Partially allocated frozen slabs */ + struct slab *partial; /* Partially allocated slabs */ #endif local_lock_t lock; /* Protects the fields above */ #ifdef CONFIG_SLUB_STATS