Received: by 2002:a05:6902:102b:0:0:0:0 with SMTP id x11csp146087ybt; Tue, 7 Jul 2020 18:38:05 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwsAPIbs5peQW1bWeWqhmFOsAPh3spuigS8Tp/9gH7ZevxrLhf4X3urKPPlA45B/M7f5UUy X-Received: by 2002:a17:907:2170:: with SMTP id rl16mr52360629ejb.422.1594172285642; Tue, 07 Jul 2020 18:38:05 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1594172285; cv=none; d=google.com; s=arc-20160816; b=w+qDPMzXXUBoEx64DAGVoy+t3GqHM5tLWI76vlKKSc8hv9aMCm8NAg4Zfed3rVn7IM +gnJ2fNRFv2tQBFit/QfvbMOhpKkFuDVJag5ifWSQIsFqqAqGOAs6b1248FNPWhY3sxU O98gb59RPcvkA+lq5Wn3YuQ27nbQgKHEosRwNVcbySK4rctV19vXhJ3ksIOTK2/Qs4bc LflxvYxFcZ+whJMcTZeBh6PJBnl7qjkaS7WBOzaJiCAdQK+6jX5FHJVdVypjxjv43d+s 7kSyFy24PcGvv4UbBRUcoZhPP2j59ABpawRZFL3kCUhySdqlYDq0pjrQDGXr7zmUNPmv cfXw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=lzr4muBW+6GXVcwhu8syVP9/mqLAIrY9hj2JrkO1l04=; b=RewWA+GY/Z6l9dVqKV94sVXfTxyWRZ14nV1ZClAKGaKvQWSWEs36RsOK8jTKO7LXvZ VxHXhS2sYOhdAkNMn8OjLXwWm8wLyp8NrjmgOjmvfrYY5jh0qGHYLHsuDjQAqgKyF7O1 aW0F7DyDJb+f3bbiuqgBnM/YGap1+zoA54ApkRpI32zBfD7n7BBvdLlHkLyANjc/0f38 rsvJoTNkqbpYchMO5gk3FKpi05SBV5hOgNqxI/PovqFYHVqWPBiH3SgLq8+lYRhi3c6w Btb+T+KU/oAPvXiU65sd1QhNRkpWkZfKOtiepGpTBDRgr1f9KJrc2j/zfk92gzc5Nrp6 74Eg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=pIPsXsDL; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id i21si15542096ejj.293.2020.07.07.18.37.41; Tue, 07 Jul 2020 18:38:05 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=pIPsXsDL; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728542AbgGHBgE (ORCPT + 99 others); Tue, 7 Jul 2020 21:36:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:48932 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728191AbgGHBgD (ORCPT ); Tue, 7 Jul 2020 21:36:03 -0400 Received: from sol.localdomain (c-107-3-166-239.hsd1.ca.comcast.net [107.3.166.239]) (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 1B10C206DF; Wed, 8 Jul 2020 01:36:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594172163; bh=qcbZMOsf+PZnops4wxmQpE3tL1Fo9+d/2GUsJmsYjRc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=pIPsXsDLGfJZLRa1uNPa8ep30GgD6VKtvrZTTnemio7/ps8+6BWHWzAWJQ3kgCdbJ SLzHPVMXTtzp7DK5m8QY5tcgIMCxcEwoJBid15CKOrWRwHBUsiwjH+7AtJ5wLO9ZZC c4Hzd9QK+N+6zgugVMC3ygDzISmy6Lm2tQYB99aE= Date: Tue, 7 Jul 2020 18:36:01 -0700 From: Eric Biggers To: Daniel Rosenberg Cc: Theodore Ts'o , linux-ext4@vger.kernel.org, Jaegeuk Kim , Chao Yu , linux-f2fs-devel@lists.sourceforge.net, linux-fscrypt@vger.kernel.org, Alexander Viro , Andreas Dilger , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Gabriel Krisman Bertazi , kernel-team@android.com Subject: Re: [PATCH v10 1/4] unicode: Add utf8_casefold_hash Message-ID: <20200708013601.GF839@sol.localdomain> References: <20200707113123.3429337-1-drosen@google.com> <20200707113123.3429337-2-drosen@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200707113123.3429337-2-drosen@google.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 07, 2020 at 04:31:20AM -0700, Daniel Rosenberg wrote: > This adds a case insensitive hash function to allow taking the hash > without needing to allocate a casefolded copy of the string. > > The existing d_hash implementations for casefolding allocates memory > within rcu-walk, by avoiding it we can be more efficient and avoid > worrying about a failed allocation. > > Signed-off-by: Daniel Rosenberg You can add: Reviewed-by: Eric Biggers If you have a chance please fix the grammar in the commit message though: "The existing d_hash implementations for casefolding allocate memory within rcu-walk. By avoiding this we can be more efficient and avoid worrying about a failed allocation." - Eric