> Recently I posted a patch to turn on the i_version counter unconditionally in > ext4, and Lukas rightly pointed out that we don't currently have an easy way to > validate its functionality. You can fetch it via NFS (and see it in network traces), > but there's no way to get to it from userland. > > Besides testing, this may also be of use for userland NFS servers, or by any > program that wants to accurately check for file changes, and not be subject to > mtime granularity problems. This would definitely be useful for NFS Ganesha. Thanks Frank > Comments and suggestions welcome. I'm not 100% convinced that this is a > great idea, but we've had people ask for it before and it seems like a reasonable > thing to provide. > > Jeff Layton (4): > vfs: report change attribute in statx for IS_I_VERSION inodes > nfs: report the change attribute if requested > afs: fill out change attribute in statx replies > ceph: fill in the change attribute in statx requests > > fs/afs/inode.c | 2 ++ > fs/ceph/inode.c | 14 +++++++++----- > fs/nfs/inode.c | 3 +++ > fs/stat.c | 7 +++++++ > include/linux/stat.h | 1 + > include/uapi/linux/stat.h | 3 ++- > samples/vfs/test-statx.c | 4 +++- > 7 files changed, 27 insertions(+), 7 deletions(-) > > -- > 2.37.1
