tree 464baa951977743dc1da2dd1a0f595c50dc3e0a8
parent e26b53d0b287056646a0dffce8bc6b0f053f3823
author Shaohua Li <shli@kernel.org> 1381799102 +0800
committer Jens Axboe <axboe@kernel.dk> 1382698559 +0100

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>