From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Joel Stanley <joel@jms.id.au>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] drivers: core: Don't try to use a dead glue_dir
Date: Mon, 23 Jul 2018 10:35:43 +1000 [thread overview]
Message-ID: <57c12574e0daf5f38dd8e871299b8dd4f41c5d53.camel@kernel.crashing.org> (raw)
In-Reply-To: <20180721075350.GA17840@kroah.com>
On Sat, 2018-07-21 at 09:53 +0200, Greg Kroah-Hartman wrote:
> > > So I hate using kobject_get_unless_zero(), and resisted ever adding it
> > > to the tree as it shows a bad locking/tree situation as you point out
> > > here. But for some reason, the block developers seemed to insist they
> > > needed it, and so it is in the tree for them. I don't want it to spread
> > > if at all possible, which makes me want to reject this patch as this
> > > should be "a case that can never be hit".
> >
> > Except it can in that situation... at least unless you get my patch 2/2
> > (or the newer one I'm about to send that avoids adding a child counter
> > and uses the one in kernfs instead).
>
> To follow up on this. I've applied the 2/2 patch for this series, so
> this 1/2 "should" not be needed. Ben, if you still see this trigger
> with that, I guess I can take this, but it still feels wrong to me :)
I've tested my repro-case with only patch 2 and it doesn't trigger
anymore, as expected.
That said, you and Linus might want to sync your clocks on how sysfs
"should" work :-)
Cheers,
Ben.
next prev parent reply other threads:[~2018-07-23 0:38 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <c40fe912fe008b1b531a3867e8784ed79d68023e.camel@kernel.crashing.org>
[not found] ` <CA+55aFxR0qg0yY-NWnH0DDruVWw8qRqp8=CRLq13p=TyxosJKw@mail.gmail.com>
2018-06-29 2:21 ` [PATCH 1/2] drivers: core: Don't try to use a dead glue_dir Benjamin Herrenschmidt
2018-06-30 19:45 ` Linus Torvalds
2018-07-07 16:48 ` Greg Kroah-Hartman
2018-07-09 23:44 ` Benjamin Herrenschmidt
2018-07-10 14:55 ` Greg Kroah-Hartman
2018-07-10 23:32 ` Benjamin Herrenschmidt
2018-07-10 23:55 ` Linus Torvalds
2018-07-11 0:07 ` Benjamin Herrenschmidt
2018-07-21 7:53 ` Greg Kroah-Hartman
2018-07-23 0:35 ` Benjamin Herrenschmidt [this message]
2018-07-07 16:51 ` Greg Kroah-Hartman
2018-07-09 23:50 ` Benjamin Herrenschmidt
2018-06-29 2:21 ` [PATCH 2/2] drivers: core: Remove glue dirs from sysfs earlier Benjamin Herrenschmidt
2018-06-29 13:56 ` Linus Torvalds
2018-06-29 13:57 ` Linus Torvalds
2018-06-30 1:04 ` Benjamin Herrenschmidt
2018-06-30 3:51 ` Benjamin Herrenschmidt
[not found] ` <edc7b03b9550ddcf1291ebf5a6dafd24f4455c23.camel@kernel.crashing.org>
[not found] ` <CA+55aFxS7OVEN5XrxceC5ibz780mhn-qRa50w1gVFjsz2JjMbw@mail.gmail.com>
[not found] ` <7eb06b499f2be366cf68c6b6588b16c603e6a567.camel@kernel.crashing.org>
2018-07-01 2:07 ` Linus Torvalds
2018-07-01 2:18 ` Linus Torvalds
2018-07-01 3:49 ` Benjamin Herrenschmidt
2018-07-01 3:42 ` Benjamin Herrenschmidt
2018-07-01 3:57 ` Linus Torvalds
2018-07-01 7:16 ` Benjamin Herrenschmidt
2018-07-01 17:04 ` Linus Torvalds
2018-07-01 23:36 ` Benjamin Herrenschmidt
2018-07-02 10:23 ` Benjamin Herrenschmidt
2018-07-02 19:24 ` Linus Torvalds
2018-07-03 0:57 ` Benjamin Herrenschmidt
2018-07-03 2:15 ` Linus Torvalds
2018-07-03 2:26 ` Linus Torvalds
2018-07-03 2:39 ` Benjamin Herrenschmidt
2018-07-03 5:22 ` Benjamin Herrenschmidt
2018-07-03 15:46 ` Tejun Heo
2018-07-04 1:10 ` Benjamin Herrenschmidt
[not found] ` <CA+55aFzKmzC-2_6+RsRRu9KfK_r=UGgLN2Q0hSNBV=ScGR7=8g@mail.gmail.com>
[not found] ` <6e3ca577f8dd5f3621d1054447d3f928a73dfcf9.camel@kernel.crashing.org>
[not found] ` <CA+55aFy+ZSu5cPzk887N-ZgXqvTB=Bp1JQYMWT1SZY81MqLH6Q@mail.gmail.com>
[not found] ` <1bc873980e7f63291fbe19dbc7e1607b8e126241.camel@kernel.crashing.org>
[not found] ` <20180707164241.GB16279@kroah.com>
[not found] ` <CA+55aFx-UX8nxewRFFWdBgYfPqfipnxaqJuJCUni9h4JvhoPFw@mail.gmail.com>
2018-07-10 0:29 ` [PATCH v2 " Benjamin Herrenschmidt
2018-07-10 0:33 ` Linus Torvalds
2018-07-10 1:37 ` Benjamin Herrenschmidt
2018-07-10 14:55 ` Greg Kroah-Hartman
2018-07-10 23:31 ` Benjamin Herrenschmidt
2018-07-03 2:37 ` [PATCH " Benjamin Herrenschmidt
2018-07-02 10:22 ` Benjamin Herrenschmidt
2018-07-01 3:52 ` Benjamin Herrenschmidt
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