From: Shaohua Li <shli@kernel.org>
Date: Tue, 15 Oct 2013 01:05:02 +0000 (+0800)
Subject: percpu_ida: add percpu_ida_for_each_free
X-Git-Tag: v3.13-rc1~101^2^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7fc2ba17e8bf9f218cac10cc2a3de613d9d9086d;p=pandora-kernel.git

percpu_ida: add percpu_ida_for_each_free

Add a new API to iterate free ids. blk-mq-tag will use it.

Note, this doesn't guarantee to iterate all free ids restrictly. Caller
should be aware of this. blk-mq uses it to do sanity check for request
timedout, so can tolerate the limitation.

Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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