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Subject: Re: [PATCH] fs: exFAT read-only driver GPL implementation by Paragon
 Software.
To:     =?UTF-8?Q?Pali_Roh=c3=a1r?= <pali.rohar@gmail.com>,
        Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Cc:     "viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>
From:   Maurizio Lombardi <mlombard@redhat.com>
Message-ID: <a4c42aa5-f9b7-4e74-2c11-220d45cb3669@redhat.com>
Date:   Mon, 21 Oct 2019 13:37:13 +0200
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Dne 21.10.2019 v 13:11 Pali Roh=C3=A1r napsal(a):
> Are you going to add support also for TexFAT? Or at least for more two
> FAT tables (like is used in FAT32)?
>=20

Just a small note here, differences between FAT and exFAT:

1) Contiguous files get a special treatment by exFAT: they do not use the F=
AT cluster chain.
2) exFAT doesn't use the FAT to track free space, it uses a bitmap.

So, 2 FAT tables are probably not sufficient for recovery, 2 bitmaps are ne=
eded too.[1]
Btw, only Windows CE supported this.

[1] http://www.ntfs.com/exfat-allocation-bitmap.htm

Maurizio