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 kZWuOsJdJQdmwlWC5L5ln9xgfr/4mOY38B0U= Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.4 (3.50.4-1.fc39) Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Sun, 2024-03-03 at 14:23 -0800, Dai Ngo wrote: > The NFS server should ask clients to voluntarily return unused > delegations when the number of granted delegations reaches the > max_delegations. This is so that the server can continue to > grant delegations for new requests. >=20 > Signed-off-by: Dai Ngo > --- > fs/nfsd/nfs4state.c | 3 +++ > 1 file changed, 3 insertions(+) >=20 > v2: move declaration of deleg_reaper() up to other forward > declarations in the file. >=20 > diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c > index fdc95bfbfbb6..961000261b3e 100644 > --- a/fs/nfsd/nfs4state.c > +++ b/fs/nfsd/nfs4state.c > @@ -87,6 +87,7 @@ static void nfs4_free_ol_stateid(struct nfs4_stid *stid= ); > void nfsd4_end_grace(struct nfsd_net *nn); > static void _free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cp= ntf_state *cps); > static void nfsd4_file_hash_remove(struct nfs4_file *fi); > +static void deleg_reaper(struct nfsd_net *nn); > =20 > /* Locking: */ > =20 > @@ -6550,6 +6551,8 @@ nfs4_laundromat(struct nfsd_net *nn) > /* service the server-to-server copy delayed unmount list */ > nfsd4_ssc_expire_umount(nn); > #endif > + if (atomic_long_read(&num_delegations) >=3D max_delegations) > + deleg_reaper(nn); > out: > return max_t(time64_t, lt.new_timeo, NFSD_LAUNDROMAT_MINTIMEOUT); > } Seems like a reasonable thing to do: Reviewed-by: Jeff Layton