linux-kernel - Re: [RFC v2 06/16] luo: luo_subsystems: add subsystem registration

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Message-ID: <CA+CK2bA7kN1sYN2P4eZ7=7fzB--nRwM53Gy=9dEVzRiyt-q+9w@mail.gmail.com>
Date: Sat, 7 Jun 2025 19:58:10 -0400
From: Pasha Tatashin <pasha.tatashin@...een.com>
To: David Matlack <dmatlack@...gle.com>
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Subject: Re: [RFC v2 06/16] luo: luo_subsystems: add subsystem registration

> Suggest using guard()() and scoped_guard() throughout this series
> instead of manual lock/unlock and up/down. That will simplify the code
> and reduce the chance of silly bugs where a code path misses an
> unlock/down.

This is an interesting suggestion. I have not really considered using
guard()/scoped_guard(). I personally prefer regular lock/unlock/goto
error, IMO the code is more readable this way, but I may revisit this
in the future. Also, at least in mm guards are not used, i.e.  `git
grep scoped_guard mm` returns no results.