Messages in this thread | | | Date | Mon, 22 Aug 2005 15:09:42 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 2.6.12.5 1/2] lib: allow idr to be used in irq context |
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James Bottomley <James.Bottomley@SteelEye.com> wrote: > > Of course, if we're going to go to all this trouble, the next question > that arises naturally is why not just reuse the radix-tree code to > implement idr anyway ... ?
Yes, we could probably have gone that way. radix-tree would need some enhancements for the find-next-above thing.
radix-tree has some features (tags, gang-lookup, gang-lookup-by-tag) which idr doesn't. Fitting them all into the one storage API would be nice, I guess. radix-tree does potentially use more memory, although that'll only be significant for collections which are both large and sparse.
Still, people can use either facility at present. The person who does any such consolidation would do the kernel-wide migration at the same time. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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