NFSD: add delegation reaper to react to low memory condition
[ Upstream commit 44df6f43 ] 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> Signed-off-by:
Sasha Levin <sashal@kernel.org>
parent
80a81db0
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