linux-kernel - RE: [PATCH 0/4] locks: avoid thundering-herd wake-ups

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Message-ID: <87600ktfou.fsf@notabene.neil.brown.name>
Date:   Thu, 09 Aug 2018 12:52:01 +1000
From:   NeilBrown <neilb@...e.com>
To:     Frank Filz <ffilzlnx@...dspring.com>,
        'Jeff Layton' <jlayton@...nel.org>,
        "'J. Bruce Fields'" <bfields@...ldses.org>
Cc:     'Alexander Viro' <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        'Martin Wilck' <mwilck@...e.de>
Subject: RE: [PATCH 0/4] locks: avoid thundering-herd wake-ups

On Wed, Aug 08 2018, Frank Filz wrote:

>
> Now here's another question... How does this new logic play with Open
> File Description Locks? Should still be ok since there's a thread
> waiting on each of those.

At this level Posix locks and OFD locks are almost identical - just a
different owner.
So this enhancement should work equally for posix, flock, ofd and even
leases.

Thanks,
NeilBrown

>
> Frank

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