[PATCH v6 00/18] nfs/nfsd: add support for localio

Mike Snitzer
2024-06-19T20:40:34Z

Hi,

This v6 changes include:
- Quite a bit of rebasing to eliminate intermediate steps that include
throwaway code (thanks to Jeff Layton for calling those out).
- Moved the Kconfig changes to the end of the series to ensure that
localio cannot be enabled until the code is feature complete.
- Removed needless nfsd_serv_sync() call from nfsd_create_serv().
- Removed inline from fs/nfsd/localio.c:nfs_stat_to_errno
- Wrapped localio struct nfs_client members and related
fs/nfs/client.c init code with #if IS_ENABLED(CONFIG_NFS_LOCALIO)
- Requested a unique RPC program number from IANA but switched to
using 0x20000002 until one is assigned.
- Improved the Documentation and some code comments.

Otherwise, not a lot of actual code changes.

My git tree is here:
https://git.kernel.org/pub/scm/linux/kernel/git/snitzer/linux.git/

This v6 is both branch nfs-localio-for-6.11 (always tracks latest)
and nfs-localio-for-6.11.v6

Branches nfs-localio-for-6.11.v[12345] are also available.

To see the changes from v5 to v6 please do:
git remote add snitzer git://git.kernel.org/pub/scm/linux/kernel/git/snitzer/linux.git
git remote update snitzer
git diff snitzer/nfs-localio-for-6.11.v5 snitzer/nfs-localio-for-6.11.v6

All review and comments are welcome!

Thanks,
Mike

Mike Snitzer (10):
nfs_common: add NFS LOCALIO auxiliary protocol enablement
nfsd/localio: manage netns reference in nfsd_open_local_fh
nfs: implement v3 and v4 client support for NFS_LOCALIO_PROGRAM
nfsd: implement v3 and v4 server support for NFS_LOCALIO_PROGRAM
nfs/nfsd: consolidate {encode,decode}_opaque_fixed in nfs_xdr.h
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

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 | 148 ++++
fs/Kconfig | 3 +
fs/nfs/Kconfig | 30 +
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 | 88 ++-
fs/nfs/localio.c | 850 ++++++++++++++++++++++
fs/nfs/nfs3_fs.h | 1 +
fs/nfs/nfs3client.c | 25 +
fs/nfs/nfs3proc.c | 3 +
fs/nfs/nfs3xdr.c | 58 ++
fs/nfs/nfs4_fs.h | 2 +
fs/nfs/nfs4client.c | 23 +
fs/nfs/nfs4proc.c | 3 +
fs/nfs/nfs4xdr.c | 65 +-
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 | 71 ++
fs/nfsd/Kconfig | 30 +
fs/nfsd/Makefile | 1 +
fs/nfsd/filecache.c | 15 +-
fs/nfsd/localio.c | 398 ++++++++++
fs/nfsd/netns.h | 18 +-
fs/nfsd/nfs4state.c | 25 +-
fs/nfsd/nfsctl.c | 28 +-
fs/nfsd/nfsd.h | 11 +
fs/nfsd/nfssvc.c | 181 ++++-
fs/nfsd/trace.h | 3 +-
fs/nfsd/vfs.h | 9 +
fs/nfsd/xdr.h | 6 +
include/linux/nfs.h | 2 +
include/linux/nfs_fs.h | 2 +
include/linux/nfs_fs_sb.h | 10 +
include/linux/nfs_xdr.h | 31 +-
include/linux/nfslocalio.h | 41 ++
include/linux/sunrpc/auth.h | 4 +
include/uapi/linux/nfs.h | 4 +
net/sunrpc/auth.c | 15 +
49 files changed, 2438 insertions(+), 145 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

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2.44.0