From: Jeremy Linton <jli@greshamstorage.com>
To: Dan Aloni <da-x@monatomic.org>
Cc: Arjan van de Ven <arjan@fenrus.demon.nl>,
Linux Kernel List <linux-kernel@vger.kernel.org>,
linux-scsi@vger.kernel.org, Mike Christie <michaelc@cs.wisc.edu>
Subject: Re: [PATCH] scsi_execute_async() should add to the tail of the queue
Date: Wed, 20 Dec 2006 17:50:51 -0600 [thread overview]
Message-ID: <4589CC5B.9090704@greshamstorage.com> (raw)
In-Reply-To: <4587C04E.10307@monatomic.org>
> So instead of adding a parameter, we can make scsi_execute_async()
> decide for itself based on the SCSI command, with read/write I/Os
> taking the lowest priority.
This seems like a bad idea, I can come up with a number of cases where
the priority of a request would better be optimized by a higher level
subsystem, rather than a simple prioritization based on the command type.
The original suggestion to provide both head and tail insertion options
seems like the obvious solution, short of a full priority queuing system.
next prev parent reply other threads:[~2006-12-21 0:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-19 8:35 [PATCH] scsi_execute_async() should add to the tail of the queue Dan Aloni
2006-12-19 10:03 ` Arjan van de Ven
2006-12-19 10:34 ` Dan Aloni
2006-12-20 23:50 ` Jeremy Linton [this message]
2006-12-19 11:26 ` Jens Axboe
2006-12-19 18:34 ` Jon Escombe
2006-12-19 18:44 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2006-12-19 0:02 Dan Aloni
2006-12-20 20:40 ` Steven Hayter
2006-12-21 7:12 ` Dan Aloni
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