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Re: xfs_efi_item slab leak

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: xfs_efi_item slab leak
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Tue, 21 Dec 2010 11:54:05 +1100
Cc: Nick Piggin <npiggin@xxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <20101220113139.GA10324@xxxxxxxxxxxxx>
References: <AANLkTi=LrU2CsC-VZmJ5M9U7eJpjqfAv8UgaEYv=Sg01@xxxxxxxxxxxxxx> <20101218000245.GG5193@dastard> <20101220113139.GA10324@xxxxxxxxxxxxx>
User-agent: Mutt/1.5.20 (2009-06-14)
On Mon, Dec 20, 2010 at 06:31:39AM -0500, Christoph Hellwig wrote:
> On Sat, Dec 18, 2010 at 11:02:45AM +1100, Dave Chinner wrote:
> > Ok, after unmounting everything I can see two items in remaining in
> > the xfs_efi_item cache after an xfstests run. ??t's probably to do
> > with a filesystem shutdown not cleaning them up correctly. I'll put
> > it on my list of stuff to track down.
> Does it still happen with your working tree?  The incorrect handling
> of IOP_UNPING with remove == 1 looks like it could cause something
> similar.

I haven't checked the current patch set - just on the kernel that I
was currently running - I'll do more analysis later this afternoon.
I agree that the IOP_UNPIN() handling is a likely culprit, though.


Dave Chinner

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