linux-kernel - Re: [rfc][patch] mm, fs: warn on missing address space operations

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Message-Id: <20100322093041.2de599f8.akpm@linux-foundation.org>
Date:	Mon, 22 Mar 2010 09:30:41 -0400
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Nick Piggin <npiggin@...e.de>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [rfc][patch] mm, fs: warn on missing address space operations

On Mon, 22 Mar 2010 21:40:57 +1100 Nick Piggin <npiggin@...e.de> wrote:

> > 
> > 	/* this fs should use block_invalidatepage() */
> > 	WARN_ON_ONCE(!invalidatepage);
> 
> Problem is that it doesn't give you the aop name (and call trace
> probably won't help).

Yes it does - you have the filename and line number.  You go there and
read "invalidatepage".  And the backtrace identifies the filesystem.



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