[PATCH v2 00/13] NFS client user xattr (RFC8276) support

Frank van der Linden
2020-03-25T23:11:09Z

v1 is here: https://www.spinics.net/lists/linux-nfs/msg76740.html

v2:

* Move nfs4 specific definitions to nfs_fs4.h
* Squash some patches together to avoid unused function warnings
when bisecting.
* Made determining server support a two-step process. First,
the extended attribute FATTR is verified to be supported, then
the value of the attributed is queried in fsinfo to determine
support.
* Fixed up Makefile to remove an unneeded extra line.

This was tested as before (using my own stress tests), but also
with xfstests-dev. No issues were found, but xfstests needs some
fixes to correctly run the applicable xattr tests on NFS. I
have those changes, but need to send them out.

I also tested stress-ng-xattr with 1000 workers on the client
side, running for 8 hours without problems (except for noting
that the session tbl_lock can become quite hot when doing
NFS operations by 1000 threads, but that's a separate issue).

Frank van der Linden (13):
nfs,nfsd: NFSv4.2 extended attribute protocol definitions
nfs: add client side only definitions for user xattrs
NFSv4.2: define limits and sizes for user xattr handling
NFSv4.2: query the server for extended attribute support
NFSv4.2: add client side XDR handling for extended attributes
nfs: define nfs_access_get_cached function
NFSv4.2: query the extended attribute access bits
nfs: modify update_changeattr to deal with regular files
nfs: define and use the NFS_INO_INVALID_XATTR flag
nfs: make the buf_to_pages_noslab function available to the nfs code
NFSv4.2: add the extended attribute proc functions.
NFSv4.2: hook in the user extended attribute handlers
NFSv4.2: add client side xattr caching.

fs/nfs/Makefile | 2 +-
fs/nfs/client.c | 22 +-
fs/nfs/dir.c | 24 +-
fs/nfs/inode.c | 16 +-
fs/nfs/nfs42.h | 24 +
fs/nfs/nfs42proc.c | 248 ++++++++
fs/nfs/nfs42xattr.c | 1083 +++++++++++++++++++++++++++++++++++
fs/nfs/nfs42xdr.c | 438 ++++++++++++++
fs/nfs/nfs4_fs.h | 35 ++
fs/nfs/nfs4client.c | 31 +
fs/nfs/nfs4proc.c | 237 +++++++-
fs/nfs/nfs4super.c | 10 +
fs/nfs/nfs4xdr.c | 31 +
fs/nfs/nfstrace.h | 3 +-
include/linux/nfs4.h | 25 +
include/linux/nfs_fs.h | 12 +
include/linux/nfs_fs_sb.h | 6 +
include/linux/nfs_xdr.h | 60 +-
include/uapi/linux/nfs4.h | 3 +
include/uapi/linux/nfs_fs.h | 1 +
20 files changed, 2269 insertions(+), 42 deletions(-)
create mode 100644 fs/nfs/nfs42xattr.c

--
2.17.2