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Convert to the much saner new idr interface.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Maciej Sosnowski <maciej.sosnowski@intel.com>
Cc: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>