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Re: Locking in disk(9) api
On Tue, Dec 29, 2009 at 01:36:37PM -0800, John Nemeth wrote:
> } So far, all users have private locks and the disk(9) data is seen
> } as part of the device instance and is protected by such a private lock.
> } I'm not convinced that you need a separate lock just for disk(9) data.
> Aren't these the stats displayed by iostat(8) [-dDx]? Do we need
> locking shared with the things that read the stats? Or, is it
> considered to be okay if the reader gets stats that are in flux?
Well, originally this was read via kvm and always in a state of flux.
Michael van Elst
"A potential Snark may lurk in every tree."
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