From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=26c2=WZ=lists.ozlabs.org=linux-erofs-bounces+linux-erofs=archiver.kernel.org@kernel.org>
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=-8.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,
	USER_AGENT_SANE_1 autolearn=ham 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 D498AC3A59F
	for <linux-erofs@archiver.kernel.org>; Thu, 29 Aug 2019 13:57:43 +0000 (UTC)
Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by mail.kernel.org (Postfix) with ESMTPS id 59E0923403
	for <linux-erofs@archiver.kernel.org>; Thu, 29 Aug 2019 13:57:43 +0000 (UTC)
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 59E0923403
Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com
Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org
Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])
	by lists.ozlabs.org (Postfix) with ESMTP id 46K41c38wZzDrgK
	for <linux-erofs@archiver.kernel.org>; Thu, 29 Aug 2019 23:57:40 +1000 (AEST)
Authentication-Results: lists.ozlabs.org;
 spf=pass (mailfrom) smtp.mailfrom=huawei.com
 (client-ip=45.249.212.188; helo=huawei.com;
 envelope-from=gaoxiang25@huawei.com; receiver=<UNKNOWN>)
Authentication-Results: lists.ozlabs.org;
 dmarc=none (p=none dis=none) header.from=huawei.com
Received: from huawei.com (szxga02-in.huawei.com [45.249.212.188])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by lists.ozlabs.org (Postfix) with ESMTPS id 46K40z2rjbzDrgK
 for <linux-erofs@lists.ozlabs.org>; Thu, 29 Aug 2019 23:57:01 +1000 (AEST)
Received: from DGGEMM401-HUB.china.huawei.com (unknown [172.30.72.55])
 by Forcepoint Email with ESMTP id 72E3334F3D3DF4BE7CC4;
 Thu, 29 Aug 2019 21:56:55 +0800 (CST)
Received: from dggeme762-chm.china.huawei.com (10.3.19.108) by
 DGGEMM401-HUB.china.huawei.com (10.3.20.209) with Microsoft SMTP Server (TLS)
 id 14.3.439.0; Thu, 29 Aug 2019 21:56:55 +0800
Received: from architecture4 (10.140.130.215) by
 dggeme762-chm.china.huawei.com (10.3.19.108) with Microsoft SMTP Server
 (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id
 15.1.1591.10; Thu, 29 Aug 2019 21:56:54 +0800
Date: Thu, 29 Aug 2019 21:56:07 +0800
From: Gao Xiang <gaoxiang25@huawei.com>
To: Pratik Shinde <pratikshinde320@gmail.com>
Subject: Re: [PATCH] staging: erofs: using switch-case while checking the
 inode type.
Message-ID: <20190829135607.GA195010@architecture4>
References: <20190829130813.11721-1-pratikshinde320@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
In-Reply-To: <20190829130813.11721-1-pratikshinde320@gmail.com>
User-Agent: Mutt/1.9.4 (2018-02-28)
X-Originating-IP: [10.140.130.215]
X-ClientProxiedBy: dggeme717-chm.china.huawei.com (10.1.199.113) To
 dggeme762-chm.china.huawei.com (10.3.19.108)
X-CFilter-Loop: Reflected
X-BeenThere: linux-erofs@lists.ozlabs.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Development of Linux EROFS file system <linux-erofs.lists.ozlabs.org>
List-Unsubscribe: <https://lists.ozlabs.org/options/linux-erofs>,
 <mailto:linux-erofs-request@lists.ozlabs.org?subject=unsubscribe>
List-Archive: <http://lists.ozlabs.org/pipermail/linux-erofs/>
List-Post: <mailto:linux-erofs@lists.ozlabs.org>
List-Help: <mailto:linux-erofs-request@lists.ozlabs.org?subject=help>
List-Subscribe: <https://lists.ozlabs.org/listinfo/linux-erofs>,
 <mailto:linux-erofs-request@lists.ozlabs.org?subject=subscribe>
Cc: devel@driverdev.osuosl.org, gregkh@linuxfoundation.org,
 linux-erofs@lists.ozlabs.org
Errors-To: linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org
Sender: "Linux-erofs"
 <linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org>

Hi Pratik,

On Thu, Aug 29, 2019 at 06:38:13PM +0530, Pratik Shinde wrote:
> while filling the linux inode, using switch-case statement to check
> the type of inode.
> switch-case statement looks more clean.
> 
> Signed-off-by: Pratik Shinde <pratikshinde320@gmail.com>

No, that is not the case, see __ext4_iget() in fs/ext4/inode.c.
and could you write patches based on latest staging tree?
erofs is now in "fs/" rather than "drivers/staging".
and I will review it then.

p.s. if someone argues here or there, there will be endless
issues since there is no standard at all.

Thanks,
Gao Xiang

> ---
>  drivers/staging/erofs/inode.c | 18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/staging/erofs/inode.c b/drivers/staging/erofs/inode.c
> index 4c3d8bf..2d2d545 100644
> --- a/drivers/staging/erofs/inode.c
> +++ b/drivers/staging/erofs/inode.c
> @@ -190,22 +190,28 @@ static int fill_inode(struct inode *inode, int isdir)
>  	err = read_inode(inode, data + ofs);
>  	if (!err) {
>  		/* setup the new inode */
> -		if (S_ISREG(inode->i_mode)) {
> +		switch (inode->i_mode & S_IFMT) {
> +		case S_IFREG:
>  			inode->i_op = &erofs_generic_iops;
>  			inode->i_fop = &generic_ro_fops;
> -		} else if (S_ISDIR(inode->i_mode)) {
> +			break;
> +		case S_IFDIR:
>  			inode->i_op = &erofs_dir_iops;
>  			inode->i_fop = &erofs_dir_fops;
> -		} else if (S_ISLNK(inode->i_mode)) {
> +			break;
> +		case S_IFLNK:
>  			/* by default, page_get_link is used for symlink */
>  			inode->i_op = &erofs_symlink_iops;
>  			inode_nohighmem(inode);
> -		} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
> -			S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
> +			break;
> +		case S_IFCHR:
> +		case S_IFBLK:
> +		case S_IFIFO:
> +		case S_IFSOCK:
>  			inode->i_op = &erofs_generic_iops;
>  			init_special_inode(inode, inode->i_mode, inode->i_rdev);
>  			goto out_unlock;
> -		} else {
> +		default:
>  			err = -EIO;
>  			goto out_unlock;
>  		}
> -- 
> 2.9.3
>