On Mon, 2024-06-24 at 12:27 -0400, Mike Snitzer wrote: > 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 > This is looking pretty good now! I know Chuck noted some nits and I'm still hung up on the making nfsd_serv a void *, but I don't see it as a show stopper and we can always fix that later. You can add: Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>
