linux-kernel - Re: [PATCH] eventfs: Have inodes have unique inode numbers

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Message-ID: <20240128172650.6dbf402d@rorschach.local.home>
Date: Sun, 28 Jan 2024 17:26:50 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, LKML <linux-kernel@...r.kernel.org>,
 Linux Trace Devel <linux-trace-devel@...r.kernel.org>, Christian Brauner
 <brauner@...nel.org>, Ajay Kaher <ajay.kaher@...adcom.com>, Geert
 Uytterhoeven <geert@...ux-m68k.org>, linux-fsdevel
 <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH] eventfs: Have inodes have unique inode numbers

On Sun, 28 Jan 2024 14:17:43 -0800
Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> You seem to have used SRCU as a "I don't want to do refcounts" thing.
> I bet you'll notice that it clarifies things *enormously* to just use
> refcounts.

Well, removing creating dentries in the readdir() logic is what opened
up the door to a lot of simplification. Thanks for helping me with that.
As I believe that may have been the source of most of the deadlocks we
were struggling with.

But yeah, kref probably could have fixed that too.

-- Steve