From: Tejun Heo <tj@kernel.org>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Alan Stern <stern@rowland.harvard.edu>,
"Theodore Ts'o" <tytso@mit.edu>,
Kernel development list <linux-kernel@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@suse.de>,
Kay Sievers <kay.sievers@vrfy.org>
Subject: Re: Revoking filesystems [was Re: Sysfs attributes racing with unregistration]
Date: Thu, 5 Jan 2012 08:44:43 -0800 [thread overview]
Message-ID: <20120105164443.GB11934@google.com> (raw)
In-Reply-To: <m1ehvecf23.fsf@fess.ebiederm.org>
Hello,
On Thu, Jan 05, 2012 at 08:03:16AM -0800, Eric W. Biederman wrote:
> Well the choices are really:
> a) On a block device hotunplug keep the device and have it simply report
> everything as errors, to the filesystem. Maybe with a hint to the
> filesystem that something is wrong.
> b) Have a filesystem revoke method so that we don't have to keep the
> unplugged block device structure around indefinitely.
>
> It seems clear that we are neither doing (a) or (b) which results in
> periodic and spectacular failures when block devices are unplugged,
> because we try and access block devices that no longer exist.
We're definitely doing a). If it's not working properly, it's a bug.
Thanks.
--
tejun
next prev parent reply other threads:[~2012-01-05 16:44 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-04 16:52 Sysfs attributes racing with unregistration Alan Stern
2012-01-04 17:18 ` Tejun Heo
2012-01-04 18:13 ` Eric W. Biederman
2012-01-04 19:41 ` Alan Stern
2012-01-05 3:07 ` Eric W. Biederman
2012-01-05 15:13 ` Revoking filesystems [was Re: Sysfs attributes racing with unregistration] Alan Stern
2012-01-05 15:32 ` Tejun Heo
2012-01-05 16:03 ` Eric W. Biederman
2012-01-05 16:44 ` Tejun Heo [this message]
2012-01-05 16:47 ` Alan Stern
2012-01-05 17:11 ` Tejun Heo
2012-01-05 18:27 ` Ted Ts'o
2012-01-05 18:36 ` Tejun Heo
2012-01-05 19:28 ` Ted Ts'o
2012-01-05 20:52 ` Tejun Heo
2012-01-06 6:25 ` Alexander E. Patrakov
2012-01-07 21:01 ` Revoking filesystems [was Re: Sysfs attributes racing withunregistration] Milton Miller
2012-01-05 20:43 ` Revoking filesystems [was Re: Sysfs attributes racing with unregistration] Eric W. Biederman
2012-01-05 20:55 ` Tejun Heo
2012-01-05 18:38 ` Christoph Hellwig
2012-01-05 15:52 ` Eric W. Biederman
2013-01-14 15:11 ` watchdog code anish kumar
2012-01-05 18:18 ` Revoking filesystems [was Re: Sysfs attributes racing with unregistration] Greg KH
2012-01-04 18:13 ` Sysfs attributes racing with unregistration Alan Stern
2012-01-04 18:20 ` Tejun Heo
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