From patchwork Tue Oct 13 23:56:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11836515 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7A61961C for ; Tue, 13 Oct 2020 23:56:56 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3FB222222E for ; Tue, 13 Oct 2020 23:56:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="mciLY0p8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3FB222222E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id BA0BE94000F; Tue, 13 Oct 2020 19:56:54 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id B54B0940007; Tue, 13 Oct 2020 19:56:54 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A902C94000F; Tue, 13 Oct 2020 19:56:54 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0062.hostedemail.com [216.40.44.62]) by kanga.kvack.org (Postfix) with ESMTP id 7F737940007 for ; Tue, 13 Oct 2020 19:56:54 -0400 (EDT) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 328711EE6 for ; Tue, 13 Oct 2020 23:56:54 +0000 (UTC) X-FDA: 77368565148.30.skirt75_1c1354d27207 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin30.hostedemail.com (Postfix) with ESMTP id 0D1A3180B3AA7 for ; Tue, 13 Oct 2020 23:56:54 +0000 (UTC) X-Spam-Summary: 1,0,0,4b3cfae96a7096a6,d41d8cd98f00b204,akpm@linux-foundation.org,,RULES_HIT:41:355:379:800:960:966:967:973:988:989:1260:1345:1359:1381:1431:1437:1534:1541:1711:1730:1747:1777:1792:2196:2199:2393:2525:2559:2563:2682:2685:2693:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3151:3352:3868:3870:3872:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:4385:5007:6119:6261:6653:7558:7576:9025:9545:10004:11026:11658:11914:12043:12048:12296:12297:12517:12519:12555:12679:12696:12737:12986:13069:13311:13357:14181:14384:14721:21080:21451:21600:21627:21939:30054,0,RBL:198.145.29.99:@linux-foundation.org:.lbl8.mailshell.net-64.100.201.201 62.2.0.100;04ygd4etc48mnad3beewbu5uyr6eioppen3qgjyyawa7he6ghaof3nmzwh4r3nt.nod46zhyxdxcnk3rtxyszek6yibxcarrzmr9g4o3cxnaos3bn4miu11ghm9sw9m.6-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime :26,LUA_ X-HE-Tag: skirt75_1c1354d27207 X-Filterd-Recvd-Size: 2419 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf07.hostedemail.com (Postfix) with ESMTP for ; Tue, 13 Oct 2020 23:56:53 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BEA8E2222F; Tue, 13 Oct 2020 23:56:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602633413; bh=z5J91t5FC9FcStAWHyI5DzrSoiGme3mVZCR9CrkvMLA=; h=Date:From:To:Subject:In-Reply-To:From; b=mciLY0p8fMv4q7Bjo5ULIprku7Hpyd76GT9aMG7VwvN8J6oaIYOqoedT44waRHcib ZV25cKYD7Sm73WspB/0M+sbAv62Punke9EdXBBpq71VgIpWnJmp12oRSs6Am5fuixJ 9lMmuvQv9dq+je0M3mFnU+voWGdGuzTBRIsCwg1U= Date: Tue, 13 Oct 2020 16:56:52 -0700 From: Andrew Morton To: akpm@linux-foundation.org, linux-mm@kvack.org, mm-commits@vger.kernel.org, sh_def@163.com, torvalds@linux-foundation.org Subject: [patch 154/181] mm/z3fold.c: use xx_zalloc instead xx_alloc and memset Message-ID: <20201013235652.hOUXk_sFI%akpm@linux-foundation.org> In-Reply-To: <20201013164658.3bfd96cc224d8923e66a9f4e@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Hui Su Subject: mm/z3fold.c: use xx_zalloc instead xx_alloc and memset alloc_slots() allocates memory for slots using kmem_cache_alloc(), then memsets it. We can just use kmem_cache_zalloc(). Link: https://lkml.kernel.org/r/20200926100834.GA184671@rlk Signed-off-by: Hui Su Reviewed-by: Andrew Morton Signed-off-by: Andrew Morton --- mm/z3fold.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/mm/z3fold.c~mmz3fold-use-xx_zalloc-instead-xx_alloc-and-memset +++ a/mm/z3fold.c @@ -212,13 +212,12 @@ static inline struct z3fold_buddy_slots { struct z3fold_buddy_slots *slots; - slots = kmem_cache_alloc(pool->c_handle, + slots = kmem_cache_zalloc(pool->c_handle, (gfp & ~(__GFP_HIGHMEM | __GFP_MOVABLE))); if (slots) { /* It will be freed separately in free_handle(). */ kmemleak_not_leak(slots); - memset(slots->slot, 0, sizeof(slots->slot)); slots->pool = (unsigned long)pool; rwlock_init(&slots->lock); }