linux-kernel - Re: [RFC][PATCHSET] epoll cleanups

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Message-ID: <20201004024902.GN3421308@ZenIV.linux.org.uk>
Date:   Sun, 4 Oct 2020 03:49:02 +0100
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Marc Zyngier <maz@...nel.org>
Subject: Re: [RFC][PATCHSET] epoll cleanups

On Sun, Oct 04, 2020 at 03:36:08AM +0100, Al Viro wrote:
> 	Locking and especilly control flow in fs/eventpoll.c is
> overcomplicated.  As the result, the code has been hard to follow
> and easy to fuck up while modifying.
> 
> 	The following series attempts to untangle it; there's more to be done
> there, but this should take care of some of the obfuscated bits.  It also
> reduces the memory footprint of that thing.
> 
> 	The series lives in
> git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git #experimental.epoll
> and it survives light local beating.  It really needs review and testing.
> I'll post the individual patches in followups (27 commits, trimming about 120
> lines out of fs/eventpoll.c).

PS: the posted series is on top of #work.epoll, which got merged into mainline
on Friday.  Forgot to mention that - my apologies.