On Fri, Sep 29, 2023 at 10:27:17AM +0000, John Garry wrote: > From: "Darrick J. Wong" <djwong@xxxxxxxxxx> > > Add a new inode flag to require that all file data extent mappings must > be aligned (both the file offset range and the allocated space itself) > to the extent size hint. Having a separate COW extent size hint is no > longer allowed. > > The goal here is to enable sysadmins and users to mandate that all space > mappings in a file must have a startoff/blockcount that are aligned to > (say) a 2MB alignment and that the startblock/blockcount will follow the > same alignment. This needs a good explanation of why someone would want this.
