From: Oleg Nesterov <oleg@redhat.com>
To: Tejun Heo <tj@kernel.org>, Pavel Mironchik <tibor0@gmail.com>,
Alasdair G Kergon <agk@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: mempool && io_schedule_timeout()
Date: Wed, 21 Dec 2011 16:12:36 +0100 [thread overview]
Message-ID: <20111221151236.GA27571@redhat.com> (raw)
In-Reply-To: <20111220221818.GJ10752@google.com>
On 12/20, Tejun Heo wrote:
>
> - if (!pool->curr_nr) {
> - /*
> - * FIXME: this should be io_schedule(). The timeout is there
> - * as a workaround for some DM problems in 2.6.18.
> - */
> - io_schedule_timeout(5*HZ);
> - }
> - finish_wait(&pool->wait, &wait);
>
> + spin_unlock_irqrestore(&pool->lock, flags);
> +
> + /*
> + * FIXME: this should be io_schedule(). The timeout is there as a
> + * workaround for some DM problems in 2.6.18.
> + */
> + io_schedule_timeout(5*HZ);
Just curious... This was added by 0b1d647a in 2006.
Perhaps the problem was already fixed?
Oleg.
next prev parent reply other threads:[~2011-12-21 15:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-20 22:18 [PATCH for-3.3] mempool: clean up and document synchronization and memory barrier usage Tejun Heo
2011-12-21 14:55 ` Oleg Nesterov
2011-12-21 14:57 ` Oleg Nesterov
2011-12-21 16:37 ` Tejun Heo
2011-12-21 16:44 ` Tejun Heo
2011-12-21 17:40 ` Oleg Nesterov
2011-12-21 18:52 ` Tejun Heo
2011-12-21 15:12 ` Oleg Nesterov [this message]
2011-12-21 15:34 ` mempool && io_schedule_timeout() Tejun Heo
2011-12-21 19:08 ` [PATCH for-3.3 UPDATED] mempool: fix and document synchronization and memory barrier usage Tejun Heo
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