From: Josef Bacik <josef@redhat.com>
To: Oliver Mattos <oliver.mattos08@imperial.ac.uk>
Cc: "Simon Holm Thøgersen" <odie@cs.aau.dk>,
"Yien Zheng" <esprout@gmail.com>,
"Jens Axboe" <jens.axboe@oracle.com>,
linux-btrfs@vger.kernel.org, "Josef Bacik" <jbacik@redhat.com>
Subject: Re: [PATCH] Btrfs: take block group fragmentation into account for allocation
Date: Mon, 9 Mar 2009 11:24:17 -0400 [thread overview]
Message-ID: <20090309152417.GA31524@unused.rdu.redhat.com> (raw)
In-Reply-To: <9F6FB775EC554CDBB1949CDCAC6F08EC@laptop>
On Mon, Mar 09, 2009 at 03:21:06PM -0000, Oliver Mattos wrote:
>
>> So the idea of the function is to return an integer in the range
>> [0,100]?
>
> Why are we using a range of 0 to 100 anyway? 100 seems like an arbitary
> value for kernel space - why not just keep it as a value in the range
> [0,2^32) ? That eliminates the arbitary constant of 100, and in some
> cases could reduce the effects of rounding and allow finer control at no
> additional expense.
>
Its not arbitrary, its a percentage, so 0-100 percent.
Josef
next prev parent reply other threads:[~2009-03-09 15:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-08 14:42 [PATCH] Btrfs: take block group fragmentation into account for allocation Yien Zheng
2009-03-08 16:37 ` Jens Axboe
2009-03-09 2:03 ` Yien Zheng
2009-03-09 13:56 ` Simon Holm Thøgersen
2009-03-09 15:21 ` Oliver Mattos
2009-03-09 15:24 ` Josef Bacik [this message]
2009-03-09 17:29 ` jim owens
-- strict thread matches above, loose matches on Subject: below --
2009-03-06 19:30 Josef Bacik
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