linux-kernel - Re: [PATCH] lib/string: sysfs_streq works case insensitively

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Message-ID: <24530d5a-5611-469e-a4f7-cc704589e9a5@rasmusvillemoes.dk>
Date:   Wed, 28 Apr 2021 08:37:51 +0200
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Gioh Kim <gi-oh.kim@...os.com>, linux-kernel@...r.kernel.org,
        akpm@...ux-foundation.org
Cc:     ndesaulniers@...gle.com, gregkh@...uxfoundation.org
Subject: Re: [PATCH] lib/string: sysfs_streq works case insensitively

On 12/04/2021 13.33, Gioh Kim wrote:
> As the name shows, it checks the strings inputed from sysfs.
> It should work for both case-sensitive filesystem and
> case-insensitive filesystem. Therefore sysfs_streq should work
> case-insensitively.

What in the whole wide world does case-sensitivity or lack thereof of
filesystems have to do with whether or not the sysfs_streq API should
work case sensitively or not?

The sysfs filesystem itself (1) works like any real UNIX file system
(i.e. case sensitively) and (2) sysfs_streq is not in any way involved
in readdir or lookups or other such filename operations in sysfs.

Very confused,
Rasmus