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From: Larry Finger <Larry.Finger@lwfinger.net>
To: LKML <linux-kernel@vger.kernel.org>
Subject: Question regarding mutex locking
Date: Tue, 27 Nov 2007 22:37:00 -0600	[thread overview]
Message-ID: <474CF06C.8020208@lwfinger.net> (raw)

If a particular routine needs to lock a mutex, but it may be entered with that mutex already locked,
would the following code be SMP safe?

hold_lock = mutex_trylock()

...

if (hold_lock)
	mutex_unlock()

Thanks,

Larry

             reply	other threads:[~2007-11-28  4:37 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-28  4:37 Larry Finger [this message]
2007-11-28  8:10 ` Question regarding mutex locking Matthias Kaehlcke
2007-11-28 14:46   ` Larry Finger
2007-11-28 15:00     ` Matthias Kaehlcke
2007-11-28 15:22 ` Andreas Schwab
2007-11-28 15:41   ` Larry Finger
2007-11-28 22:45     ` Jarek Poplawski
2007-11-28 22:56       ` Jarek Poplawski
2007-11-28 23:07         ` Jarek Poplawski
2007-11-28 23:33       ` Stephen Hemminger
2007-11-29  6:40         ` Jarek Poplawski
2007-11-30  1:13 ` Bryan O'Sullivan
     [not found] <fa.C9TdvYAhY8SablNc39IpD8WDnNM@ifi.uio.no>
2007-11-28  4:53 ` Robert Hancock
2007-11-28  5:19   ` Larry Finger
2007-11-29  2:34     ` David Schwartz
2007-11-29  7:56       ` Jarek Poplawski

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