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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

  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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