This patch series adds:
. refactor courtesy_client_reaper to a generic low memory
shrinker.
. XDR encode and decode function for CB_RECALL_ANY op.
. the delegation reaper 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.
. Add CB_RECALL_ANY tracepoints.
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
v5:
. refactor courtesy_client_reaper to a generic low memory
shrinker
. merge courtesy client shrinker and delegtion shrinker into
one.
. reposition nfsd_cb_recall_any and nfsd_cb_recall_any_done
in nfsd/trace.h
. use __get_sockaddr to display server IP address in
tracepoints.
. modify encode_cb_recallany4args to replace sizeof with
ARRAY_SIZE.
---
Dai Ngo (4):
NFSD: refactoring courtesy_client_reaper to a generic low memory shrinker
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/nfs4callback.c | 62 +++++++++++++++++++++++
fs/nfsd/nfs4state.c | 116 +++++++++++++++++++++++++++++++++++++++-----
fs/nfsd/state.h | 9 ++++
fs/nfsd/trace.h | 49 +++++++++++++++++++
fs/nfsd/xdr4.h | 5 ++
fs/nfsd/xdr4cb.h | 6 +++
6 files changed, 234 insertions(+), 13 deletions(-)
