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Date:   Sat, 4 May 2019 06:45:03 -0700
From:   Matthew Wilcox <willy@infradead.org>
To:     Carmeli Tamir <carmeli.tamir@gmail.com>
Cc:     viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] Use list.h instead of file_system_type next
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On Sat, May 04, 2019 at 05:45:48AM -0400, Carmeli Tamir wrote:
> Changed file_system_type next field to list_head and refactored
> the code to use list.h functions.

What might be interesting is getting rid of this list and using an XArray
instead.  This would be a more in-depth change; getting rid of the rwlock
in favour of using RCU accesses for the read-side and the xa_lock for
write accesses to the filesystem list.