On Tue, Nov 01, 2011 at 02:42:33PM -0700, Roland Dreier wrote: > I agree that it definitely is more appealing, if we have a 64-bit > version of a counter, that we should just export that counter > where we used to export the 32-bit version.
I think this falls under the 'undocumented, beware' API design. This interface isn't specified so exactly as to have set out how many bytes are in the files and how many bits are in the numbers. If you wrote a reader that can't handle a 20 byte integer with leading zeros then your user space isn't following the API. If your reader doesn't elegantly handle overflow to whatever type your reader picked, then you aren't following the API. There are many examples of the kernel tweaking APIs along this undocumented axis, and theoritically the text-free-form nature of sysfs is supposed to save us from having to worry about exactly this sort of case. And again, this is a useless interface in IB. IBoE is going to be first real, serious, long term user, let's make it saner instead of keeping it as is forever? Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
