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From:   NeilBrown <neilb@suse.com>
To:     Frank Filz <ffilzlnx@mindspring.com>,
        'Jeff Layton' <jlayton@kernel.org>,
        "'J. Bruce Fields'" <bfields@fieldses.org>
Date:   Thu, 09 Aug 2018 12:52:01 +1000
Cc:     'Alexander Viro' <viro@zeniv.linux.org.uk>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        'Martin Wilck' <mwilck@suse.de>
Subject: RE: [PATCH 0/4] locks: avoid thundering-herd wake-ups
In-Reply-To: <01c401d42f70$5c034db0$1409e910$@mindspring.com>
References: <153369219467.12605.13472423449508444601.stgit@noble> <20180808195445.GD23873@fieldses.org> <20180808200912.GE23873@fieldses.org> <20180808212832.GF23873@fieldses.org> <04ffa27c29d2bff8bd9cb9b6d4ea6b6fd3969b6c.camel@kernel.org> <01c401d42f70$5c034db0$1409e910$@mindspring.com>
Message-ID: <87600ktfou.fsf@notabene.neil.brown.name>
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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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