From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82447C433E0 for ; Thu, 4 Jun 2020 23:49:55 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3BF6120872 for ; Thu, 4 Jun 2020 23:49:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="fKjUs8Gx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3BF6120872 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 D88F1280046; Thu, 4 Jun 2020 19:49:54 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D112E280005; Thu, 4 Jun 2020 19:49:54 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C0123280046; Thu, 4 Jun 2020 19:49:54 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0180.hostedemail.com [216.40.44.180]) by kanga.kvack.org (Postfix) with ESMTP id A4386280005 for ; Thu, 4 Jun 2020 19:49:54 -0400 (EDT) Received: from smtpin10.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 6CD562839 for ; Thu, 4 Jun 2020 23:49:54 +0000 (UTC) X-FDA: 76893174708.10.bite37_0917beb26d9b Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin10.hostedemail.com (Postfix) with ESMTP id 538CE16A069 for ; Thu, 4 Jun 2020 23:49:54 +0000 (UTC) X-HE-Tag: bite37_0917beb26d9b X-Filterd-Recvd-Size: 3036 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf15.hostedemail.com (Postfix) with ESMTP for ; Thu, 4 Jun 2020 23:49:53 +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 E2452208A9; Thu, 4 Jun 2020 23:49:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591314593; bh=S7IU0RIdjn4gg6lYPIETCCW2eW0giZe6bEH5pF8oYUU=; h=Date:From:To:Subject:In-Reply-To:From; b=fKjUs8Gx/ysZpLSlKhzW2OuKR2rT04D30lPD5PFqatWWPjZwIJ3tPHsyVyK2b3Hk+ 4bpvZve7UWsAKtftUrT5qejlgxLQrW+nE0zPSBQ7RwtTmckcfI/bq58Bxvkzvrl6sm BMdLu7JYmy8OpKjaof6svJ4ux9EWIw9frV9/GuyA= Date: Thu, 04 Jun 2020 16:49:52 -0700 From: Andrew Morton To: akpm@linux-foundation.org, andriy.shevchenko@linux.intel.com, axboe@kernel.dk, linux-mm@kvack.org, minchan@kernel.org, mm-commits@vger.kernel.org, sergey.senozhatsky.work@gmail.com, torvalds@linux-foundation.org Subject: [patch 070/127] zcomp: Use ARRAY_SIZE() for backends list Message-ID: <20200604234952.C4Tx4TZW0%akpm@linux-foundation.org> In-Reply-To: <20200604164523.e15f3177f4b69dcb4f2534a1@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: 538CE16A069 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 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: Andy Shevchenko Subject: zcomp: Use ARRAY_SIZE() for backends list Instead of keeping NULL terminated array switch to use ARRAY_SIZE() which helps to further clean up. Link: http://lkml.kernel.org/r/20200508100758.51644-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko Acked-by: Minchan Kim Reviewed-by: Andrew Morton Cc: Sergey Senozhatsky Cc: Jens Axboe Cc: Andy Shevchenko Signed-off-by: Andrew Morton --- drivers/block/zram/zcomp.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) --- a/drivers/block/zram/zcomp.c~zcomp-use-array_size-for-backends-list +++ a/drivers/block/zram/zcomp.c @@ -29,7 +29,6 @@ static const char * const backends[] = { #if IS_ENABLED(CONFIG_CRYPTO_ZSTD) "zstd", #endif - NULL }; static void zcomp_strm_free(struct zcomp_strm *zstrm) @@ -64,7 +63,7 @@ bool zcomp_available_algorithm(const cha { int i; - i = __sysfs_match_string(backends, -1, comp); + i = sysfs_match_string(backends, comp); if (i >= 0) return true; @@ -83,9 +82,9 @@ ssize_t zcomp_available_show(const char { bool known_algorithm = false; ssize_t sz = 0; - int i = 0; + int i; - for (; backends[i]; i++) { + for (i = 0; i < ARRAY_SIZE(backends); i++) { if (!strcmp(comp, backends[i])) { known_algorithm = true; sz += scnprintf(buf + sz, PAGE_SIZE - sz - 2, _