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Re: [MirageOS-devel] basic support for transactions in irminsule

On 1 May 2014, at 21:07, Thomas Gazagnaire <thomas@xxxxxxxxxxxxxx> wrote:

> I'm still not totally happy with the atomicity of such operations (ie. there 
> is no guarantee than nobody else is modifying the HEAD tag when you merge a 
> transaction, which can lead to transaction loss if not careful enough). 

How does git deal with simultaneous tag updates?  Presumably some sort of 
atomic test-and-set will be useful here to ensure that noone else collides with 
that last step of a transaction merge...


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