From: "Theodore Y. Ts'o" <tytso@mit.edu>
To: Waiman Long <longman@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Davidlohr Bueso <dave@stgolabs.net>,
Oleg Nesterov <oleg@redhat.com>
Subject: Re: [PATCH] locking/rwsem: Add up_write_non_owner() for percpu_up_write()
Date: Wed, 4 Apr 2018 23:14:20 -0400 [thread overview]
Message-ID: <20180405031420.GB22358@thunk.org> (raw)
In-Reply-To: <1522852646-2196-1-git-send-email-longman@redhat.com>
On Wed, Apr 04, 2018 at 10:37:26AM -0400, Waiman Long wrote:
> The commit 8c5db92a705d ("locking/rwsem: Add DEBUG_RWSEMS to look for
> lock/unlock mismatches") causes a warning in ext4 fstests due to the
> fact that the freeze and thaw ioctls, by design, are run in different
> processes.
While true, it's not just ext4 fstests --- it's any file system which
supports freeze/thaw, since it's happening in the vfs layer. I have
just as easily replicated the problem using "kvm-xfstests -c xfs
generic/068". Or "kvm-xfstests -c btrfs generic/068".
Cheers,
- Ted
next prev parent reply other threads:[~2018-04-05 3:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-04 14:37 [PATCH] locking/rwsem: Add up_write_non_owner() for percpu_up_write() Waiman Long
2018-04-04 14:40 ` Waiman Long
2018-04-05 3:14 ` Theodore Y. Ts'o [this message]
2018-04-09 11:20 ` Oleg Nesterov
2018-04-09 13:32 ` Waiman Long
2018-04-09 14:22 ` Oleg Nesterov
2018-05-14 19:36 ` Waiman Long
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