From: "David S. Miller" <davem@redhat.com>
To: torvalds@transmeta.com
Cc: akpm@digeo.com, linux-kernel@vger.kernel.org
Subject: Re: [patch 1/4] prepare_to_wait/finish_wait sleep/wakeup API
Date: Wed, 25 Sep 2002 21:34:27 -0700 (PDT) [thread overview]
Message-ID: <20020925.213427.116352583.davem@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0209252133280.1451-100000@home.transmeta.com>
From: Linus Torvalds <torvalds@transmeta.com>
Date: Wed, 25 Sep 2002 21:37:23 -0700 (PDT)
On Wed, 25 Sep 2002, David S. Miller wrote:
> For example, the ordering of the test and add/remove from
> the wait queue is pretty important.
The test and add yes. Remove no, since remove is always done after
we know we're waking up.
Ok, so if the condition retest fails at wakeup (someone got to the
event before us), it's ok because we add ourselves back to the wait
queue first, mark ourselves as sleeping, _then_ retest.
Right?
next prev parent reply other threads:[~2002-09-26 4:35 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-26 4:07 [patch 1/4] prepare_to_wait/finish_wait sleep/wakeup API Andrew Morton
2002-09-26 4:24 ` David S. Miller
2002-09-26 4:37 ` Linus Torvalds
2002-09-26 4:34 ` David S. Miller [this message]
2002-09-26 5:12 ` Linus Torvalds
2002-09-26 5:24 ` Andrew Morton
2002-09-26 14:41 ` Linus Torvalds
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