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List:       fuse-devel
Subject:    Re: [fuse-devel] Kernel bug in fs/inode.c
From:       Miklos Szeredi <miklos () szeredi ! hu>
Date:       2011-08-12 14:59:54
Message-ID: 87obzuisk5.fsf () tucsk ! pomaz ! szeredi ! hu
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Jakob Blomer <jakob.blomer@cern.ch> writes:

> Hi,
>
> we got a report of a failing worker node showing the kernel messages
> below.  Apparently the load on that machine is high and raising.  The
> Fuse module hangs on access, but statfs seems to be still working (df
> goes through).
>
> The Fuse module uses a statically linked, slightly patched Fuse 2.8.4
> (patch attached, it facilitates "drain-out" of the fs caches).

Jakob,

Thanks for the report.

This is already fixed in linux-3.0.  Commit is 08142579b6 "mm: fix
assertion mapping->nrpages == 0 in end_writeback()"

The fix should also appear in a 2.6.39 stable kernel soon.

Thanks,
Miklos

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