Subject: Re: Extension of fsync_range() to permit forcing disk cache flushing
To: None <tls@rek.tjls.com>
From: Jason Thorpe <thorpej@shagadelic.org>
List: tech-kern
Date: 12/18/2004 11:38:10
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On Dec 17, 2004, at 2:06 PM, Thor Lancelot Simon wrote:
> With newer SATA disks, *if we supported tagged command queueing*, which
> we don't, and only with controllers that actually supported it, we
> could
> do the right thing here.
Don't assume that SATA NCQ is a panacea. It is still not as good as
SCSI tagged queueing (where you have mode pages that allow you to tune
various aspects of how the drive's queue is managed).
-- Jason R. Thorpe <thorpej@shagadelic.org>
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