On Thu, Apr 27, 2017 at 3:57 PM, David Howells <dhowells@xxxxxxxxxx> wrote: > Christoph Hellwig <hch@xxxxxx> wrote: > >> Until we have a flag in the superblock that a given fs fills out s_uuid >> no one can rely on it. So please add the infrastructure that consumers >> can actually make use of it while you're at it. > > Can't you just look at whether s_uuid is NULL or not? > You mean if it is NULL_UUID_LE? Yes, that is what I do now. Christoph suggested that this is not robust enough. I'm rather indifferent about the need of a flag.
