Re: [PATCH 24/25] r/o bind mounts: track number of mount writers

From: Dave Hansen
Date: Mon Sep 24 2007 - 18:06:59 EST

On Sun, 2007-09-23 at 23:17 -0700, Andrew Morton wrote:
> It look like a false positive to me, but really, for a patchset of this
> complexity and maturity I cannot fathom how it could have escaped any
> lockdep testing.

I test with lockdep all the time. The problem was that lockdep doesn't
complain until you have 8 nested locks, and I only tested on a 4-cpu

I lowered the lockdep nesting limit to 3, and got the warning on my

-- Dave

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