Commit 9f0c5124 authored by Trond Myklebust's avatar Trond Myklebust Committed by Anna Schumaker
Browse files

NFS: Don't open code clearing of delegation state 



Add a helper for the case when the nfs4 open state has been set to use
a delegation stateid, and we want to revert to using the open stateid.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 994b15b9

fs/nfs/nfs4proc.c

+12 −9
Original line number Diff line number Diff line
@@ -1637,6 +1637,14 @@ static void nfs_state_set_delegation(struct nfs4_state *state, 
	write_sequnlock(&state->seqlock);

}



static void nfs_state_clear_delegation(struct nfs4_state *state)

{

	write_seqlock(&state->seqlock);

	nfs4_stateid_copy(&state->stateid, &state->open_stateid);

	clear_bit(NFS_DELEGATED_STATE, &state->flags);

	write_sequnlock(&state->seqlock);

}



static int update_open_stateid(struct nfs4_state *state,

		const nfs4_stateid *open_stateid,

		const nfs4_stateid *delegation,
@@ -2145,10 +2153,7 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, 
	if (IS_ERR(opendata))

		return PTR_ERR(opendata);

	nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);

	write_seqlock(&state->seqlock);

	nfs4_stateid_copy(&state->stateid, &state->open_stateid);

	write_sequnlock(&state->seqlock);

	clear_bit(NFS_DELEGATED_STATE, &state->flags);

	nfs_state_clear_delegation(state);

	switch (type & (FMODE_READ|FMODE_WRITE)) {

	case FMODE_READ|FMODE_WRITE:

	case FMODE_WRITE:
@@ -2601,10 +2606,7 @@ static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state, 
		const nfs4_stateid *stateid)

{

	nfs_remove_bad_delegation(state->inode, stateid);

	write_seqlock(&state->seqlock);

	nfs4_stateid_copy(&state->stateid, &state->open_stateid);

	write_sequnlock(&state->seqlock);

	clear_bit(NFS_DELEGATED_STATE, &state->flags);

	nfs_state_clear_delegation(state);

}



static void nfs40_clear_delegation_stateid(struct nfs4_state *state)
@@ -2672,13 +2674,14 @@ static void nfs41_check_delegation_stateid(struct nfs4_state *state) 
	delegation = rcu_dereference(NFS_I(state->inode)->delegation);

	if (delegation == NULL) {

		rcu_read_unlock();

		nfs_state_clear_delegation(state);

		return;

	}



	nfs4_stateid_copy(&stateid, &delegation->stateid);

	if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) {

		rcu_read_unlock();

		nfs_finish_clear_delegation_stateid(state, &stateid);

		nfs_state_clear_delegation(state);

		return;

	}

CRA Git | Maintained and supported by SUSTech CRA and CCSE