Hi, IANA has assigned the RPC program number 400122 for localio! Tested with xfstests, all is passing agsint NFS v3 and v4.2 (localio ontop of XFS) except generic/355 (which tests if suid bit gets cleared with directio). My git tree is here: https://git.kernel.org/pub/scm/linux/kernel/git/snitzer/linux.git/ This v7 is both branch nfs-localio-for-6.11 (always tracks latest) and nfs-localio-for-6.11.v7 Quite a bit has changed since v6: - Updated to use IANA assigned RPC program number 400122. - Thanks to Neil the localio protocol stands on its own and is simplified, all of Neil's changes were included. But a patch is needed to sunrpc to remove the BUG_ON if p_arglen is 0 (otherwise the NULL rpc used during connection triggers the BUG_ON. - Reduced Kconfig knobs down to NFS_LOCALIO and NFSD_LOCALIO. Left them piece-wise for reason detailed in the last patch. - Added MODULE_DESCRIPTION to nfs_localio module. - Removed all the AIO directio code from fs/nfs/localio.c because it wasn't used (since nothing ever set NFS_IOHDR_ODIRECT). But even if enabled the async kiocb completion wasn't ever used in practice. TODO: - For directio, fix kiocb so that it conveys IOCB_DIRECT to underlying filesystem. - Must fix xfstests generic/355. - Look closer at implementing standlone SRCU to avoid bloating nfsd_net -- idea of shared SRCU is very unintuitive to me... FYI: - Really rather not play games with 'localio_enabled' to get all of localio code to build but be disabled by default.. just too fiddley. All review and comments are welcome! Thanks, Mike Mike Snitzer (11): nfs_common: add NFS LOCALIO auxiliary protocol enablement nfsd/localio: manage netns reference in nfsd_open_local_fh nfs/nfsd: factor out {encode,decode}_opaque_fixed to nfs_xdr.h SUNRPC: remove call_allocate() BUG_ON if p_arglen=0 to allow RPC with void arg nfs: implement client support for NFS_LOCALIO_PROGRAM nfsd: implement server support for NFS_LOCALIO_PROGRAM nfsd: prepare to use SRCU to dereference nn->nfsd_serv nfsd: use SRCU to dereference nn->nfsd_serv nfsd/localio: use SRCU to dereference nn->nfsd_serv in nfsd_open_local_fh nfs: add Documentation/filesystems/nfs/localio.rst nfs/nfsd: add Kconfig options to allow localio to be enabled NeilBrown (1): SUNRPC: replace program list with program array Trond Myklebust (3): NFS: Enable localio for non-pNFS I/O pnfs/flexfiles: Enable localio for flexfiles I/O nfs/localio: use dedicated workqueues for filesystem read and write Weston Andros Adamson (5): nfs: pass nfs_client to nfs_initiate_pgio nfs: pass descriptor thru nfs_initiate_pgio path nfs: pass struct file to nfs_init_pgio and nfs_init_commit sunrpc: add rpcauth_map_to_svc_cred_local nfs/nfsd: add "localio" support Documentation/filesystems/nfs/localio.rst | 134 ++++ fs/Kconfig | 3 + fs/nfs/Kconfig | 14 + fs/nfs/Makefile | 1 + fs/nfs/blocklayout/blocklayout.c | 6 +- fs/nfs/client.c | 15 +- fs/nfs/filelayout/filelayout.c | 16 +- fs/nfs/flexfilelayout/flexfilelayout.c | 131 +++- fs/nfs/flexfilelayout/flexfilelayout.h | 2 + fs/nfs/flexfilelayout/flexfilelayoutdev.c | 6 + fs/nfs/inode.c | 61 +- fs/nfs/internal.h | 61 +- fs/nfs/localio.c | 851 ++++++++++++++++++++++ fs/nfs/nfs4xdr.c | 13 - fs/nfs/nfstrace.h | 61 ++ fs/nfs/pagelist.c | 32 +- fs/nfs/pnfs.c | 24 +- fs/nfs/pnfs.h | 6 +- fs/nfs/pnfs_nfs.c | 2 +- fs/nfs/write.c | 13 +- fs/nfs_common/Makefile | 3 + fs/nfs_common/nfslocalio.c | 72 ++ fs/nfsd/Kconfig | 14 + fs/nfsd/Makefile | 1 + fs/nfsd/filecache.c | 15 +- fs/nfsd/localio.c | 327 +++++++++ fs/nfsd/netns.h | 18 +- fs/nfsd/nfs4state.c | 25 +- fs/nfsd/nfsctl.c | 30 +- fs/nfsd/nfsd.h | 2 +- fs/nfsd/nfssvc.c | 165 +++-- fs/nfsd/trace.h | 3 +- fs/nfsd/vfs.h | 9 + include/linux/nfs.h | 9 + include/linux/nfs_fs.h | 2 + include/linux/nfs_fs_sb.h | 10 + include/linux/nfs_xdr.h | 20 +- include/linux/nfslocalio.h | 41 ++ include/linux/sunrpc/auth.h | 4 + include/linux/sunrpc/svc.h | 7 +- net/sunrpc/auth.c | 15 + net/sunrpc/clnt.c | 1 - net/sunrpc/svc.c | 68 +- net/sunrpc/svc_xprt.c | 2 +- net/sunrpc/svcauth_unix.c | 3 +- 45 files changed, 2116 insertions(+), 202 deletions(-) create mode 100644 Documentation/filesystems/nfs/localio.rst create mode 100644 fs/nfs/localio.c create mode 100644 fs/nfs_common/nfslocalio.c create mode 100644 fs/nfsd/localio.c create mode 100644 include/linux/nfslocalio.h -- 2.44.0
