From: Tejun Heo <tj@kernel.org>
Date: Thu, 28 Feb 2013 01:05:07 +0000 (-0800)
Subject: idr: add idr_layer->prefix
X-Git-Tag: v3.9-rc1~46^2~39
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=54616283c2948812a44240858ced610e7cacbde1;p=pandora-kernel.git

idr: add idr_layer->prefix

Add a field which carries the prefix of ID the idr_layer covers.  This
will be used to implement lookup hint.

This patch doesn't make use of the new field and doesn't introduce any
behavior difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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