I had inteded to send a PR for this for v6.2, but I got sidetracked with different issues, and didn't get it together in time. This set has been sitting in linux-next since October, and it seems to be behaving, so I intend to send a PR when the v6.3 merge window opens. Though nothing has really changed since last year, I'm resending now in the hopes I can collect a few more Reviewed-bys (ones from Al, Trond and Anna would be particularly welcome). The main consumer of i_version field (knfsd) has to jump through a number of hoops to fetch it, depending on what sort of inode it is. Rather than do this, we want to offload the responsibility for presenting this field to the filesystem's ->getattr operation, which is a more natural way to deal with a field that may be implemented differently. The focus of this patchset is to clean up these internal interfaces. This should also make it simple to present this attribute to userland in the future, which should be possible once the semantics are a bit more consistent across different backing filesystems. Thanks! Jeff Layton (8): fs: uninline inode_query_iversion fs: clarify when the i_version counter must be updated vfs: plumb i_version handling into struct kstat nfs: report the inode version in getattr if requested ceph: report the inode version in getattr if requested nfsd: move nfsd4_change_attribute to nfsfh.c nfsd: use the getattr operation to fetch i_version nfsd: remove fetch_iversion export operation fs/ceph/inode.c | 16 +++++++---- fs/libfs.c | 36 ++++++++++++++++++++++++ fs/nfs/export.c | 7 ----- fs/nfs/inode.c | 16 ++++++++--- fs/nfsd/nfs4xdr.c | 4 ++- fs/nfsd/nfsfh.c | 42 ++++++++++++++++++++++++++++ fs/nfsd/nfsfh.h | 29 +------------------- fs/nfsd/vfs.h | 7 ++++- fs/stat.c | 17 ++++++++++-- include/linux/exportfs.h | 1 - include/linux/iversion.h | 59 ++++++++++++++-------------------------- include/linux/stat.h | 9 ++++++ 12 files changed, 156 insertions(+), 87 deletions(-) -- 2.39.1
