linux-kernel - Re: [PATCH v6 01/24] erofs: add on-disk layout

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Message-ID: <20190902103509.GA42552@architecture4>
Date:   Mon, 2 Sep 2019 18:35:12 +0800
From:   Gao Xiang <gaoxiang25@...wei.com>
To:     Pavel Machek <pavel@...x.de>
CC:     Christoph Hellwig <hch@...radead.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Theodore Ts'o <tytso@....edu>, David Sterba <dsterba@...e.cz>,
        Amir Goldstein <amir73il@...il.com>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Dave Chinner <david@...morbit.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Jan Kara <jack@...e.cz>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        <linux-fsdevel@...r.kernel.org>, <devel@...verdev.osuosl.org>,
        LKML <linux-kernel@...r.kernel.org>,
        <linux-erofs@...ts.ozlabs.org>, Chao Yu <yuchao0@...wei.com>,
        Miao Xie <miaoxie@...wei.com>,
        Li Guifu <bluce.liguifu@...wei.com>,
        Fang Wei <fangwei1@...wei.com>
Subject: Re: [PATCH v6 01/24] erofs: add on-disk layout

Hi Pavel,

(Thanks...)

On Mon, Sep 02, 2019 at 10:40:20AM +0200, Pavel Machek wrote:

> 
> So __packed is right thing to do. If architecture accesses that
> slowly, that's ungood, but different structures between architectures
> would be really bad.

(...a little word, it seems that Christoph was trying to say that
 it's unnecessary to __packed for this case since we designed most
 erofs on-disk format in natural alignment... Anyway, I updated,
 that seems okay...)

Thanks,
Gao Xiang

> 
> Best regards,
> 								Pavel
> -- 
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany