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    SubjectRe: Strange freeze on 2.6.22 (deadlock?)
    On 01/07/2008 02:06 PM, Brice Figureau wrote:

    > Thanks for the answer.
    > I'm using whatever is the default mount option (which I think is
    > data=ordered). The only other mount option I use is nodiratime,noatime.
    >
    > Note that a large part of the processes in D state are "waiting" in
    > __mutex_lock from generic_file_aio_write.
    > Another large part is coming from balance_dirty_pages_ratelimited_nr.
    >
    > It seems that there was some writeback congestion to the block device.
    > All the /proc/sys/vm/* files are at their defaults.
    >
    > This looks like if it wasn't possible to write to the block device anymore.
    > Could a block device write error (ie hardware failure) be the root cause?
    >
    > Any other idea?
    > What should I try the next time it freezes?

    Same bug as http://lkml.org/lkml/2007/8/1/469 ??


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