From: "George Spelvin" <linux@horizon.com>
To: gregkh@linuxfoundation.org, linux@horizon.com
Cc: giometti@linux.it, linux-kernel@vger.kernel.org,
linux-serial@vger.kernel.org, peter@hurleysoftware.com
Subject: Re: [PATCH v2 8/9] pps: Use a single cdev
Date: 13 Feb 2013 13:35:29 -0500 [thread overview]
Message-ID: <20130213183529.27043.qmail@science.horizon.com> (raw)
In-Reply-To: <20130213182026.GA3996@kroah.com>
> You forgot a Signed-off-by: line for this patch, so I can't apply it, or
> the 9/9 patch :(
Oops, fixed. I don't see why the 9/9 patch depends on it,
though. They're not related or interdependent in any way.
If you want to check the logic, I'd appreciate it. I'm not
really sure about the RCU stuff. My understanding is that:
- the idr code does the appropriate write locking when
modifying itself, so I don't need to do any.
- The pps_device returned from idr_find is itself refcounted,
so it can't go away, and the accesses don't have bo be
inside the RCU read "lock". It's only the IDR's internal
index nodes that might get reallocated by modificaitons of
a different part of the tree.
> Care to resend just these two after fixing this up?
I can, but if you think you need 9/9 resent (which *did* have a S-o-b),
I'm confused and wonder why...
next prev parent reply other threads:[~2013-02-13 18:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-12 13:56 [PATCH v2 0/9] 3.8-rc regression with pps-ldisc due to 70ece7a731 George Spelvin
2013-02-06 15:55 ` [PATCH v2 7/9] tty: Remove ancient hardpps() Peter Hurley
2013-02-08 6:50 ` [PATCH v2 9/9] tty/tty_ldisc.c: use test_and_clear_bit in tty_ldisc_close George Spelvin
2013-02-10 9:08 ` [PATCH v2 1/9] pps: Add pps_lookup_dev() function George Spelvin
2013-02-10 9:41 ` [PATCH v2 2/9] pps: Use pps_lookup_dev to reduce ldisc coupling George Spelvin
2013-02-10 9:43 ` [PATCH v2 4/9] pps: Don't crash the machine when exiting will do George Spelvin
2013-02-10 9:44 ` [PATCH v2 6/9] pps: Additional cleanups in uart_handle_dcd_change George Spelvin
2013-02-12 7:00 ` [PATCH v2 5/9] pps: Move timestamp read into PPS code proper George Spelvin
2013-02-13 18:16 ` Greg KH
2013-02-12 7:02 ` [PATCH v2 8/9] pps: Use a single cdev George Spelvin
2013-02-13 18:20 ` Greg KH
2013-02-13 18:35 ` George Spelvin [this message]
2013-02-13 18:47 ` Greg KH
2013-02-21 1:35 ` Peter Hurley
2013-02-12 7:27 ` [PATCH v2 3/9] pps: Fix a use-after free bug when unregistering a source George Spelvin
2013-02-13 16:45 ` [PATCH v2 0/9] 3.8-rc regression with pps-ldisc due to 70ece7a731 Greg KH
2013-02-13 17:11 ` Rodolfo Giometti
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