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Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority

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From: Jens Axboe
Subject: Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority
Date: Thursday, October 2, 2008 - 9:42 am

On Thu, Oct 02 2008, Arjan van de Ven wrote:

Arjan, please read the interface, it does not...

0 means not set, period. What matters is the class setting, if that is
non-zero then it is a valid setting. See

#define IOPRIO_PRIO_VALUE(class, data)  (((class) << IOPRIO_CLASS_SHIFT) | data)

So highest priority BE is IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0), which
is of course valid.

-- 
Jens Axboe

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Messages in current thread:
[PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Wed Oct 1, 8:00 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Wed Oct 1, 9:56 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Wed Oct 1, 11:27 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Wed Oct 1, 11:55 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andi Kleen, (Wed Oct 1, 11:57 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 12:45 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 12:55 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Thu Oct 2, 1:03 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 1:22 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Thu Oct 2, 1:43 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 1:46 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Dave Chinner, (Thu Oct 2, 2:33 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 2:45 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Theodore Tso, (Thu Oct 2, 5:04 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 6:05 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 6:12 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 6:14 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 6:16 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 6:27 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 6:36 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Theodore Tso, (Thu Oct 2, 6:46 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 6:47 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 7:26 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 7:33 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 9:42 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 10:11 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 12:04 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Jens Axboe, (Thu Oct 2, 12:22 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Thu Oct 2, 1:24 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Thu Oct 2, 2:37 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Dave Chinner, (Thu Oct 2, 4:58 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Thu Oct 2, 5:06 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Thu Oct 2, 5:20 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 9:01 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 9:23 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Thu Oct 2, 9:40 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 9:43 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 9:45 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Thu Oct 2, 9:50 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Thu Oct 2, 10:00 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Thu Oct 2, 10:24 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Arjan van de Ven, (Fri Oct 3, 10:21 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Theodore Tso, (Sat Oct 4, 7:12 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Joseph Fannin, (Sat Oct 4, 10:14 am)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Theodore Tso, (Sat Oct 4, 2:27 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Theodore Tso, (Wed Oct 8, 8:00 pm)
Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority, Andrew Morton, (Wed Oct 8, 8:38 pm)