From patchwork Thu Dec 5 00:50:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11273869 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 4E267109A for ; Thu, 5 Dec 2019 00:50:06 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 10D902077B for ; Thu, 5 Dec 2019 00:50:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="HWFUmqZC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 10D902077B 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 C7F256B0D74; Wed, 4 Dec 2019 19:50:04 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id C2FEE6B0D75; Wed, 4 Dec 2019 19:50:04 -0500 (EST) 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 B6C056B0D76; Wed, 4 Dec 2019 19:50:04 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0231.hostedemail.com [216.40.44.231]) by kanga.kvack.org (Postfix) with ESMTP id A14D06B0D74 for ; Wed, 4 Dec 2019 19:50:04 -0500 (EST) Received: from smtpin12.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with SMTP id 695A053B3 for ; Thu, 5 Dec 2019 00:50:04 +0000 (UTC) X-FDA: 76229255928.12.rings66_9ac2a297c3c X-Spam-Summary: 2,0,0,0e7c095311a9895d,d41d8cd98f00b204,akpm@linux-foundation.org,:adobriyan@gmail.com:akpm@linux-foundation.org::mm-commits@vger.kernel.org:torvalds@linux-foundation.org,RULES_HIT:41:355:379:800:960:967:973:988:989:1260:1263:1345:1359:1381:1431:1437:1534:1541:1711:1730:1747:1777:1792:1978:1981:2194:2199:2393:2525:2559:2563:2682:2685:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3352:3866:3867:3868:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:5007:6261:6653:7514:7576:8599:9025:9545:10004:10913:11026:11658:11914:12043:12048:12297:12517:12519:12555:12679:12696:12737:12783:12986:13069:13311:13357:14181:14384:14721:14849:21080:21451:21627:21740:21939:30029:30054,0,RBL:198.145.29.99:@linux-foundation.org:.lbl8.mailshell.net-62.2.0.100 64.100.201.201,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:28,LUA_SUMMARY:none X-HE-Tag: rings66_9ac2a297c3c X-Filterd-Recvd-Size: 2495 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf21.hostedemail.com (Postfix) with ESMTP for ; Thu, 5 Dec 2019 00:50:04 +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 3AD852077B; Thu, 5 Dec 2019 00:50:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575507003; bh=Rl0xjDCkVRN2pOsLfBaXxUwj16RaUDc6BSbgNL6C2Kg=; h=Date:From:To:Subject:In-Reply-To:From; b=HWFUmqZCgDjKr2qfpMdTKNJz7A+2jla1334CEICN4fAWPqEEpZ7HbKybhwgzh5tT/ 3zswZwm9H35H/nwTn3mZl5qsc05CGKlv+0TSqTD7gQeti9e+E7nZXwFvvXhG/x0QEj pJ+d20/cfhuNgDd30aAHE1e/ZVivLnxGj+kKBp7g= Date: Wed, 04 Dec 2019 16:50:02 -0800 From: Andrew Morton To: adobriyan@gmail.com, akpm@linux-foundation.org, linux-mm@kvack.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org Subject: [patch 07/86] fs/proc/generic.c: delete useless "len" variable Message-ID: <20191205005002.ZiQurGiDT%akpm@linux-foundation.org> In-Reply-To: <20191204164858.fe4ed8886e34ad9f3b34ea00@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: Alexey Dobriyan Subject: fs/proc/generic.c: delete useless "len" variable Pointer to next '/' encodes length of path element and next start position. Subtraction and increment are redundant. Link: http://lkml.kernel.org/r/20191004234521.GA30246@avx2 Signed-off-by: Alexey Dobriyan Reviewed-by: Andrew Morton Signed-off-by: Andrew Morton --- fs/proc/generic.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) --- a/fs/proc/generic.c~proc-delete-useless-len-variable +++ a/fs/proc/generic.c @@ -163,7 +163,6 @@ static int __xlate_proc_name(const char { const char *cp = name, *next; struct proc_dir_entry *de; - unsigned int len; de = *ret; if (!de) @@ -174,13 +173,12 @@ static int __xlate_proc_name(const char if (!next) break; - len = next - cp; - de = pde_subdir_find(de, cp, len); + de = pde_subdir_find(de, cp, next - cp); if (!de) { WARN(1, "name '%s'\n", name); return -ENOENT; } - cp += len + 1; + cp = next + 1; } *residual = cp; *ret = de;