Re: [POC][PATCH] xfs: reduce ilock contention on buffered randrw workload

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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@xxxxxxxx>
SUSE Labs, CR



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