diff options
| author | Dai Ngo <dai.ngo@oracle.com> | 2022-11-16 19:44:47 -0800 |
|---|---|---|
| committer | Chuck Lever <cel@kernel.org> | 2022-12-10 11:01:12 -0500 |
| commit | 44df6f439a1790a5f602e3842879efa88f346672 (patch) | |
| tree | 3f4ba612d056614685d124774a1174eff37177e9 /fs/nfsd/state.h | |
| parent | 3959066b697b5dfbb7141124ae9665337d4bc638 (diff) | |
NFSD: add delegation reaper to react to low memory condition
The delegation reaper is called by nfsd memory shrinker's on
the 'count' callback. It scans the client list and sends the
courtesy CB_RECALL_ANY to the clients that hold delegations.
To avoid flooding the clients with CB_RECALL_ANY requests, the
delegation reaper sends only one CB_RECALL_ANY request to each
client per 5 seconds.
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
[ cel: moved definition of RCA4_TYPE_MASK_RDATA_DLG ]
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/state.h')
| -rw-r--r-- | fs/nfsd/state.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index e30882f8b851..e94634d30591 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -368,6 +368,7 @@ struct nfs4_client { #define NFSD4_CLIENT_UPCALL_LOCK (5) /* upcall serialization */ #define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \ 1 << NFSD4_CLIENT_CB_KILL) +#define NFSD4_CLIENT_CB_RECALL_ANY (6) unsigned long cl_flags; const struct cred *cl_cb_cred; struct rpc_clnt *cl_cb_client; @@ -411,6 +412,10 @@ struct nfs4_client { unsigned int cl_state; atomic_t cl_delegs_in_recall; + + struct nfsd4_cb_recall_any *cl_ra; + time64_t cl_ra_time; + struct list_head cl_ra_cblist; }; /* struct nfs4_client_reset |