This patch series adds:
. XDR encode and decode function for CB_RECALL_ANY op.
. the delegation shrinker that sends the advisory CB_RECALL_ANY
to the clients to release unused delegations.
There is only one nfsd4_callback added for each nfs4_cleint.
Access to it must be serialized via the client flag
NFSD4_CLIENT_CB_RECALL_ANY.
v2:
. modify deleg_reaper to check and send CB_RECALL_ANY to client
only once per 5 secs.
v3:
. modify nfsd4_cb_recall_any_release to use nn->client_lock to
protect cl_recall_any_busy and call put_client_renew_locked
to decrement cl_rpc_users.
v4:
. move changes in nfs4state.c from patch (1/2) to patch(2/2).
. use xdr_stream_encode_u32 and xdr_stream_encode_uint32_array
to encode CB_RECALL_ANY arguments.
. add struct nfsd4_cb_recall_any with embedded nfs4_callback
and params for CB_RECALL_ANY op.
. replace cl_recall_any_busy boolean with client flag
NFSD4_CLIENT_CB_RECALL_ANY
. add tracepoints for CB_RECALL_ANY
---
Dai Ngo (3):
NFSD: add support for sending CB_RECALL_ANY
NFSD: add delegation shrinker to react to low memory condition
NFSD: add CB_RECALL_ANY tracepoints
fs/nfsd/netns.h | 3 ++
fs/nfsd/nfs4callback.c | 62 +++++++++++++++++++++++
fs/nfsd/nfs4state.c | 117 +++++++++++++++++++++++++++++++++++++++++++-
fs/nfsd/state.h | 9 ++++
fs/nfsd/trace.h | 53 ++++++++++++++++++++
fs/nfsd/xdr4.h | 5 ++
fs/nfsd/xdr4cb.h | 6 +++
7 files changed, 254 insertions(+), 1 deletion(-)
