To: rwhron@earthlink.net
Cc: linux-kernel@vger.kernel.org
Subject: Re: Badness in interruptible_sleep_on in 2.6.2-rc2-mm1
References: <20040128110006.GA16553@rushmore>
From: Jes Sorensen <jes@wildopensource.com>
Date: 28 Jan 2004 06:57:22 -0500
In-Reply-To: <20040128110006.GA16553@rushmore>
Message-ID: <yq0znc8xp3x.fsf@wildopensource.com>
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 946
Lines: 18

>>>>> "Randy" == rwhron  <rwhron@earthlink.net> writes:

Randy> Quad P3 Xeon boots with a series of these: Badness in
Randy> interruptible_sleep_on at kernel/sched.c:2239 Call Trace:

It's because XFS's pagebuf_daemon calls interruptible_sleep_on without
holding the big kernel lock. While what it's doing is pretty ugly,
it's in fact not dangerous in thise case. I am seeing the same on an
ia64, but it only shows up a couple of times and then quiets down and
it boots fine.

If you want, you can remove the SLEEP_ON_BKLCHECK in
kernel/sched.c:interruptible_sleep_on() until a proper fix comes out.
Or even better, rewrite the code in xfs/pagebuf/pagebuf.c to do the
right thing instead.

Cheers,
Jes
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/