linux-kernel - Re: [PATCH v3 1/2] exfat: add keep_last

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Date:   Sun, 13 Mar 2022 09:01:32 +0900
From:   Namjae Jeon <linkinjeon@...nel.org>
To:     Vasant Karasulli <vkarasulli@...e.de>
Cc:     Sungjong Seo <sj1557.seo@...sung.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        ddiss@...e.de, Takashi Iwai <tiwai@...e.de>
Subject: Re: [PATCH v3 1/2] exfat: add keep_last_dots mount option

2022-03-11 20:47 GMT+09:00, Vasant Karasulli <vkarasulli@...e.de>:
> The "keep_last_dots" mount option will, in a
> subsequent commit, control whether or not trailing periods '.' are stripped
> from path components during file lookup or file creation.
I don't know why the 1/2 patch should be split from the 2/2 patch.
Wouldn't it be better to combine them? Otherwise it looks good to me.
>
> Suggested-by: Takashi Iwai <tiwai@...e.de>
> Signed-off-by: Vasant Karasulli <vkarasulli@...e.de>
> Co-developed-by: David Disseldorp <ddiss@...e.de>
> Signed-off-by: David Disseldorp <ddiss@...e.de>
> ---
>  fs/exfat/exfat_fs.h | 3 ++-
>  fs/exfat/super.c    | 7 +++++++
>  2 files changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h
> index 619e5b4bed10..c6800b880920 100644
> --- a/fs/exfat/exfat_fs.h
> +++ b/fs/exfat/exfat_fs.h
> @@ -203,7 +203,8 @@ struct exfat_mount_options {
>  	/* on error: continue, panic, remount-ro */
>  	enum exfat_error_mode errors;
>  	unsigned utf8:1, /* Use of UTF-8 character set */
> -		 discard:1; /* Issue discard requests on deletions */
> +		 discard:1, /* Issue discard requests on deletions */
> +		 keep_last_dots:1; /* Keep trailing periods in paths */
>  	int time_offset; /* Offset of timestamps from UTC (in minutes) */
>  };
>
> diff --git a/fs/exfat/super.c b/fs/exfat/super.c
> index 8c9fb7dcec16..4c3f80ed17b1 100644
> --- a/fs/exfat/super.c
> +++ b/fs/exfat/super.c
> @@ -174,6 +174,8 @@ static int exfat_show_options(struct seq_file *m, struct
> dentry *root)
>  		seq_puts(m, ",errors=remount-ro");
>  	if (opts->discard)
>  		seq_puts(m, ",discard");
> +	if (opts->keep_last_dots)
> +		seq_puts(m, ",keep_last_dots");
>  	if (opts->time_offset)
>  		seq_printf(m, ",time_offset=%d", opts->time_offset);
>  	return 0;
> @@ -217,6 +219,7 @@ enum {
>  	Opt_charset,
>  	Opt_errors,
>  	Opt_discard,
> +	Opt_keep_last_dots,
>  	Opt_time_offset,
>
>  	/* Deprecated options */
> @@ -243,6 +246,7 @@ static const struct fs_parameter_spec exfat_parameters[]
> = {
>  	fsparam_string("iocharset",		Opt_charset),
>  	fsparam_enum("errors",			Opt_errors, exfat_param_enums),
>  	fsparam_flag("discard",			Opt_discard),
> +	fsparam_flag("keep_last_dots",		Opt_keep_last_dots),
>  	fsparam_s32("time_offset",		Opt_time_offset),
>  	__fsparam(NULL, "utf8",			Opt_utf8, fs_param_deprecated,
>  		  NULL),
> @@ -297,6 +301,9 @@ static int exfat_parse_param(struct fs_context *fc,
> struct fs_parameter *param)
>  	case Opt_discard:
>  		opts->discard = 1;
>  		break;
> +	case Opt_keep_last_dots:
> +		opts->keep_last_dots = 1;
> +		break;
>  	case Opt_time_offset:
>  		/*
>  		 * Make the limit 24 just in case someone invents something
> --
> 2.32.0
>
>