From: Jan Kara <jack@suse.cz>
To: Dave Chinner <david@fromorbit.com>
Cc: Amir Goldstein <amir73il@gmail.com>,
"Darrick J . Wong" <darrick.wong@oracle.com>,
Christoph Hellwig <hch@lst.de>,
Matthew Wilcox <willy@infradead.org>,
linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Davidlohr Bueso <dbueso@suse.com>
Subject: Re: [POC][PATCH] xfs: reduce ilock contention on buffered randrw workload
Date: Mon, 8 Apr 2019 12:33:03 +0200 [thread overview]
Message-ID: <20190408103303.GA18239@quack2.suse.cz> (raw)
In-Reply-To: <20190404211730.GD26298@dastard>
On Fri 05-04-19 08:17:30, Dave Chinner wrote:
> FYI, I'm working on a range lock implementation that should both
> solve the performance issue and the reader starvation issue at the
> same time by allowing concurrent buffered reads and writes to
> different file ranges.
Are you aware of range locks Davidlohr has implemented [1]? It didn't get
merged because he had no in-tree user at the time (he was more aiming at
converting mmap_sem which is rather difficult). But the generic lock
implementation should be well usable.
Added Davidlohr to CC.
Honza
[1] https://lkml.org/lkml/2017/3/7/22
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
next prev parent reply other threads:[~2019-04-08 10:42 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-04 16:57 Amir Goldstein
2019-04-04 21:17 ` Dave Chinner
2019-04-05 14:02 ` Amir Goldstein
2019-04-07 23:27 ` Dave Chinner
2019-04-08 9:02 ` Amir Goldstein
2019-04-08 14:11 ` Jan Kara
2019-04-08 17:41 ` Amir Goldstein
2019-04-09 8:26 ` Jan Kara
2019-04-08 11:03 ` Jan Kara
2019-04-22 10:55 ` Boaz Harrosh
2019-04-08 10:33 ` Jan Kara [this message]
2019-04-08 16:37 ` Davidlohr Bueso
2019-04-11 1:11 ` Dave Chinner
2019-04-16 12:22 ` Dave Chinner
2019-04-18 3:10 ` Dave Chinner
2019-04-18 18:21 ` Davidlohr Bueso
2019-04-20 23:54 ` Dave Chinner
2019-05-03 4:17 ` Dave Chinner
2019-05-03 5:17 ` Dave Chinner
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