Messages in this thread | | | Date | Wed, 8 Oct 2008 12:56:11 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH 2/3] Fix fsync livelock |
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On Sun 2008-10-05 17:30:19, Arjan van de Ven wrote: > On Sun, 5 Oct 2008 20:01:46 -0400 (EDT) > Mikulas Patocka <mpatocka@redhat.com> wrote: > > > I assume that if very few people complained about the livelock till > > now, very few people will see degraded write performance. My patch > > blocks the writes only if the livelock happens, so if the livelock > > doesn't happen in unpatched kernel for most people, the patch won't > > make it worse. > > I object to calling this a livelock. It's not.
8 hours of process in D state is a livelock. And we can do minimal fix here, this almost never happens in real life anyway.
Latency imposed of writer should not be a problem... -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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