Re: [PATCH] Memory management livelock

[Andrew Morton]

On Fri, 3 Oct 2008 12:32:23 +1000 Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:

> > yup, that's pretty much unfixable, really, unless new locks are added
> > which block threads which are writing to unrelated sections of the
> > file, and that could hurt some workloads quite a lot, I expect.
> 
> Why is it unfixable? Just ignore nr_to_write, and write out everything
> properly, I would have thought.

That can cause fsync to wait arbitrarily long if some other process is
writing the file.  This happens.
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