linux-kernel - Re: [PATCH 0/5] fuse: handle release synchronously (v4)

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Message-ID: <CAJfpegs4Up_feUbqEGxfhq+rZneTmy0qcZy-k3so7VjufQY7-w@mail.gmail.com>
Date:	Thu, 9 Oct 2014 10:14:17 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	Maxim Patlasov <mpatlasov@...allels.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Anand Avati <avati@...ster.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Michael j Theall <mtheall@...ibm.com>,
	fuse-devel <fuse-devel@...ts.sourceforge.net>
Subject: Re: [PATCH 0/5] fuse: handle release synchronously (v4)

On Wed, Oct 1, 2014 at 1:28 PM, Maxim Patlasov <mpatlasov@...allels.com> wrote:
> Given those patches must die, do you have any ideas how to resolve that
> "spurious EBUSY" problem?

Check the "sync_release" branch of fuse:

  git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git sync_release

And same branch name for libfuse:

  git://git.code.sf.net/p/fuse/fuse sync_release

What it does is send RELEASE from ->flush() after checking the
refcount of file (being careful about RCU accesses).

Lightly tested, more testing, as well as review, is welcome.

Thanks,
Miklos
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