linux-kernel - Re: [PATCH v17 08/10] fs/ntfs3: Add Kconfig, Makefile and doc

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Date:   Mon, 4 Jan 2021 00:07:39 +0200
From:   Kari Argillander <kari.argillander@...il.com>
To:     Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Cc:     linux-fsdevel@...r.kernel.org, viro@...iv.linux.org.uk,
        linux-kernel@...r.kernel.org, pali@...nel.org, dsterba@...e.cz,
        aaptel@...e.com, willy@...radead.org, rdunlap@...radead.org,
        joe@...ches.com, mark@...mstone.com, nborisov@...e.com,
        linux-ntfs-dev@...ts.sourceforge.net, anton@...era.com,
        dan.carpenter@...cle.com, hch@....de, ebiggers@...nel.org,
        andy.lavr@...il.com
Subject: Re: [PATCH v17 08/10] fs/ntfs3: Add Kconfig, Makefile and doc

On Thu, Dec 31, 2020 at 06:23:59PM +0300, Konstantin Komarov wrote:
> This adds Kconfig, Makefile and doc
> 
> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
> ---
>  Documentation/filesystems/ntfs3.rst | 107 ++++++++++++++++++++++++++++
>  fs/ntfs3/Kconfig                    |  41 +++++++++++
>  fs/ntfs3/Makefile                   |  31 ++++++++

Also Documentation/filesystems/index.rst should contain ntfs3.

>  3 files changed, 179 insertions(+)
>  create mode 100644 Documentation/filesystems/ntfs3.rst
>  create mode 100644 fs/ntfs3/Kconfig
>  create mode 100644 fs/ntfs3/Makefile
> 

> diff --git a/fs/ntfs3/Kconfig b/fs/ntfs3/Kconfig
> new file mode 100644
> index 000000000000..f9b732f4a5a0
> --- /dev/null
> +++ b/fs/ntfs3/Kconfig
> @@ -0,0 +1,41 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +config NTFS3_FS
> +	tristate "NTFS Read-Write file system support"
> +	select NLS
> +	help
> +	  Windows OS native file system (NTFS) support up to NTFS version 3.1.
> +
> +	  Y or M enables the NTFS3 driver with full features enabled (read,
> +	  write, journal replaying, sparse/compressed files support).
> +	  File system type to use on mount is "ntfs3". Module name (M option)
> +	  is also "ntfs3".
> +
> +	  Documentation: <file:Documentation/filesystems/ntfs3.rst>
> +
> +config NTFS3_64BIT_CLUSTER
> +	bool "64 bits per NTFS clusters"
> +	depends on NTFS3_FS && 64BIT
> +	help
> +	  Windows implementation of ntfs.sys uses 32 bits per clusters.
> +	  If activated 64 bits per clusters you will be able to use 4k cluster
> +	  for 16T+ volumes. Windows will not be able to mount such volumes.
> +
> +	  It is recommended to say N here.
> +
> +config NTFS3_LZX_XPRESS
> +	bool "activate support of external compressions lzx/xpress"
> +	depends on NTFS3_FS
> +	help
> +	  In Windows 10 one can use command "compact" to compress any files.
> +	  4 possible variants of compression are: xpress4k, xpress8k, xpress16 and lzx.
> +	  To read such "compacted" files say Y here.

It would be nice that we tell what is recommend. I think that this is recommend.
Of course if this use lot's of resource that is different story but I do not
think that is the case.

> +
> +config NTFS3_POSIX_ACL
> +	bool "NTFS POSIX Access Control Lists"
> +	depends on NTFS3_FS
> +	select FS_POSIX_ACL
> +	help
> +	  POSIX Access Control Lists (ACLs) support additional access rights
> +	  for users and groups beyond the standard owner/group/world scheme,
> +	  and this option selects support for ACLs specifically for ntfs
> +	  filesystems.

Same here. Let's suggest what user should do. Is this recommend if we wan't 
to use volume also in Windows?