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    SubjectRe: [PATCH] ext2: Fix data corruption for racing writes
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    On Thu, Apr 9, 2009 at 1:30 PM, Andrew Morton <akpm@linux-foundation.org> wrote:
    > On Mon, 6 Apr 2009 12:23:29 +0200
    > Jan Kara <jack@suse.cz> wrote:
    >
    >> >
    >> > I tried this patch and seems i got deadlock on the truncate_mutex.
    >> > Here is the message after enabling lockdep. I pasted the same message
    >> > on the origianal thread.
    >>
    >> ...
    >>
    >> I don't think this is a deadlock (or is the machine hung?). The thread
    >> was just waiting for a long time. I'd think that you'll occasionally get
    >> exactly the same message even without my patch if you stress the machine
    >> like you do.
    >>
    >
    > Well, it's easy to tell the difference
    >
    > deadlock: system never recovers
    > long-sucky-delay: system eventually recovers.
    >
    > Which was it??
    Guess i have to retest it. I didn't wait long enough to see what
    happened on the machine. However, i do see the machine got rebooted
    later, but i am not sure what is the reason it is got reboot.

    I will rerun the patch and keep an eye on it this time.

    --Ying
    >


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