From: Alasdair G Kergon <agk@redhat.com>
To: "Jun'ichi Nomura" <j-nomura@ce.jp.nec.com>
Cc: Alasdair G Kergon <agk@redhat.com>, Neil Brown <neilb@suse.de>,
Lars Marowsky-Bree <lmb@suse.de>, Greg KH <gregkh@suse.de>,
linux-kernel@vger.kernel.org,
device-mapper development <dm-devel@redhat.com>,
Mike Anderson <andmike@us.ibm.com>
Subject: Re: [PATCH 2/3] sysfs representation of stacked devices (dm) (rev.2)
Date: Wed, 22 Feb 2006 18:13:05 +0000 [thread overview]
Message-ID: <20060222181305.GD31641@agk.surrey.redhat.com> (raw)
In-Reply-To: <43FC9BD4.1010901@ce.jp.nec.com>
On Wed, Feb 22, 2006 at 12:13:56PM -0500, Jun'ichi Nomura wrote:
> Alasdair G Kergon wrote:
> > This patch needs splitting up so that independent changes can be
> > considered separately.
> > c.f. The proposal from Mike Anderson (repeated below) which I prefer
> > because it makes it clear that a table always belongs to exactly one md.
> I like his proposed patch.
> The interface is useful for my purpose too and moving table
> creation inside _hash_lock means I don't need dm_get() neither.
The global _hash_lock should not be held (thereby locking out most dm ioctl
operations on any device) while the slow populate_table() runs.
I'm trying out a variant of the patch that drops and reacquires that lock.
Alasdair
--
agk@redhat.com
next prev parent reply other threads:[~2006-02-22 18:13 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-22 16:06 [PATCH 0/3] sysfs representation of stacked devices (dm/md) (rev.2) Jun'ichi Nomura
2006-02-22 16:13 ` [PATCH 1/3] sysfs representation of stacked devices (common) (rev.2) Jun'ichi Nomura
2006-02-22 18:48 ` Greg KH
2006-02-22 22:22 ` Jun'ichi Nomura
2006-02-22 22:28 ` Greg KH
2006-02-23 19:15 ` Jun'ichi Nomura
2006-02-24 3:40 ` Greg KH
2006-02-27 16:09 ` Jun'ichi Nomura
2006-02-22 16:13 ` [PATCH 2/3] sysfs representation of stacked devices (dm) (rev.2) Jun'ichi Nomura
2006-02-22 16:34 ` Alasdair G Kergon
2006-02-22 17:13 ` Jun'ichi Nomura
2006-02-22 18:13 ` Alasdair G Kergon [this message]
2006-02-22 19:32 ` Jun'ichi Nomura
2006-02-22 16:13 ` [PATCH 3/3] sysfs representation of stacked devices (md) (rev.2) Jun'ichi Nomura
2006-02-22 18:47 ` [PATCH 0/3] sysfs representation of stacked devices (dm/md) (rev.2) Greg KH
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