Messages in this thread | | | Date | Mon, 6 Aug 2007 11:40:55 -0700 | From | Andrew Morton <> | Subject | Re: [patch] radix-tree: use indirect bit |
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On Thu, 2 Aug 2007 07:24:46 +0200 Nick Piggin <npiggin@suse.de> wrote:
> Rather than sign direct radix-tree pointers with a special bit, sign > the indirect one that hangs off the root. This means that, given a > lookup_slot operation, the invalid result will be differentiated from > the valid (previously, valid results could have the bit either set or > clear). > > This does not affect slot lookups which occur under lock -- they > can never return an invalid result. Is needed in future for lockless > pagecache.
so.. we added 30 bytes of text to radix-tree.o for no purpose? - 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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