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. The change are fairly small, but they cross several subsystems. I'd appreciate R-b's and A-b's from maintainers whose subsystems I'm touching (Chuck, Al, Trond, and Xiubo in particular). For now, I'm leaving out more siginificant behavioral changes to i_version handling so that we can keep the focus on this set rather narrow. The next stap is to get this into linux-next with an aim toward merge in v6.2. 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 | 58 ++++++++++++++-------------------------- include/linux/stat.h | 9 +++++++ 12 files changed, 155 insertions(+), 87 deletions(-) -- 2.37.3
