On Sat, May 26, 2018 at 12:27:34PM +0200, Christoph Hellwig wrote: > Per section 5.2 we need to issue the corresponding log page to clear an > AEN, so for a namespace data changed AEN we need to read the changed > namespace list log. And once we read that log anyway we might as well > use it to optimize the rescan. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> I'm a little concerned about this. Userspace might be reading the same log page. Since the contents of the page may change each time its read, it's possible the driver will see only a subset of changed namespaces at the point it gets to read the log page, missing a chance to revalidate others.
