idr: IDs guaranteed to be less than 1<<31? (was Re: [PATCH] firewire: us an idr rather than a linked list for resources)
- From: Stefan Richter <stefanr@xxxxxxxxxxxxxxxxx>
- Date: Mon, 24 Nov 2008 20:09:01 +0100
Jay Fenlason wrote at linux1394-devel:
As mentioned in the comments, there is a theoretical problem with this
code if someone manages to allocate 2^31 resources on a 32-bit
machine, or 2^32+1 resources on a 64+-bit machine.
The kerneldoc of idr_get_new() says that we only get IDs in the range of
0...0x7fffffff. But is this true with 64bit kernels?
--
Stefan Richter
-=====-==--- =-== ==---
http://arcgraph.de/sr/
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