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| author | Jeff Layton <jlayton@kernel.org> | 2026-03-25 10:40:34 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2026-06-01 11:08:18 -0400 |
| commit | 70b7e3526c53d9dd7caccdbeff5b0485640d8cf1 (patch) | |
| tree | e5e4cd79a6ba28f9d6423b98eb9ed431a9645d44 /Documentation | |
| parent | 565ee23ea2374a0ec42bb70227447baa81fcd196 (diff) | |
nfsd: add NFSD_CMD_CACHE_FLUSH netlink command
Add a new NFSD_CMD_CACHE_FLUSH generic netlink command that allows
userspace to flush the nfsd export caches (svc_export and expkey)
without writing to /proc/net/rpc/*/flush.
An optional NFSD_A_CACHE_FLUSH_MASK u32 attribute selects which caches
to flush (bit 1 = svc_export, bit 2 = expkey). If the attribute is
omitted, all nfsd caches are flushed.
This is used by exportfs to replace its /proc-based cache_flush() with a
netlink equivalent, with /proc fallback for older kernels.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/netlink/specs/nfsd.yaml | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/netlink/specs/nfsd.yaml b/Documentation/netlink/specs/nfsd.yaml index 7030b40273fd..40eca7c15680 100644 --- a/Documentation/netlink/specs/nfsd.yaml +++ b/Documentation/netlink/specs/nfsd.yaml @@ -293,6 +293,14 @@ attribute-sets: type: nest nested-attributes: expkey multi-attr: true + - + name: cache-flush + attributes: + - + name: mask + type: u32 + enum: cache-type + enum-as-flags: true operations: list: @@ -438,6 +446,15 @@ operations: request: attributes: - requests + - + name: cache-flush + doc: Flush nfsd caches (svc_export and/or expkey) + attribute-set: cache-flush + flags: [admin-perm] + do: + request: + attributes: + - mask mcast-groups: list: |