NFSv4: Fix up handling of open_to_lock sequence ids
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
Родитель
faf5f49c2d
Коммит
06735b3454
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@ -2889,11 +2889,23 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *r
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struct inode *inode = state->inode;
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struct nfs_server *server = NFS_SERVER(inode);
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struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner;
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struct nfs_lock_opargs largs = {
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.lock_stateid = &lsp->ls_stateid,
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.open_stateid = &state->stateid,
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.lock_owner = {
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.clientid = server->nfs4_state->cl_clientid,
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.id = lsp->ls_id,
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},
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.reclaim = reclaim,
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};
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struct nfs_lockargs arg = {
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.fh = NFS_FH(inode),
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.type = nfs4_lck_type(cmd, request),
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.offset = request->fl_start,
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.length = nfs4_lck_length(request),
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.u = {
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.lock = &largs,
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},
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};
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struct nfs_lockres res = {
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.server = server,
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@ -2904,56 +2916,39 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *r
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.rpc_resp = &res,
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.rpc_cred = state->owner->so_cred,
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};
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struct nfs_lock_opargs largs = {
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.reclaim = reclaim,
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.new_lock_owner = 0,
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};
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struct nfs_seqid *lock_seqid;
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int status = -ENOMEM;
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lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid);
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if (lock_seqid == NULL)
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largs.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid);
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if (largs.lock_seqid == NULL)
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return -ENOMEM;
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if (!(lsp->ls_seqid.flags & NFS_SEQID_CONFIRMED)) {
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struct nfs4_state_owner *owner = state->owner;
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struct nfs_open_to_lock otl = {
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.lock_owner = {
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.clientid = server->nfs4_state->cl_clientid,
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},
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};
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otl.lock_seqid = lock_seqid;
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otl.lock_owner.id = lsp->ls_id;
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memcpy(&otl.open_stateid, &state->stateid, sizeof(otl.open_stateid));
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largs.u.open_lock = &otl;
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largs.open_seqid = nfs_alloc_seqid(&owner->so_seqid);
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if (largs.open_seqid == NULL)
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goto out;
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largs.new_lock_owner = 1;
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arg.u.lock = &largs;
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otl.open_seqid = nfs_alloc_seqid(&owner->so_seqid);
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if (otl.open_seqid != NULL) {
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status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
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/* increment seqid on success, and seqid mutating errors */
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nfs_increment_open_seqid(status, otl.open_seqid);
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nfs_free_seqid(otl.open_seqid);
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}
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if (status == 0)
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nfs_confirm_seqid(&lsp->ls_seqid, 0);
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} else {
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struct nfs_exist_lock el;
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memcpy(&el.stateid, &lsp->ls_stateid, sizeof(el.stateid));
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largs.u.exist_lock = ⪙
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arg.u.lock = &largs;
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el.seqid = lock_seqid;
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status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
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}
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/* increment seqid on success, and seqid mutating errors*/
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nfs_increment_lock_seqid(status, lock_seqid);
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/* increment open seqid on success, and seqid mutating errors */
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if (largs.new_lock_owner != 0) {
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nfs_increment_open_seqid(status, largs.open_seqid);
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if (status == 0)
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nfs_confirm_seqid(&lsp->ls_seqid, 0);
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}
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nfs_free_seqid(largs.open_seqid);
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} else
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status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
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/* increment lock seqid on success, and seqid mutating errors*/
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nfs_increment_lock_seqid(status, largs.lock_seqid);
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/* save the returned stateid. */
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if (status == 0) {
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memcpy(lsp->ls_stateid.data, res.u.stateid.data, sizeof(lsp->ls_stateid.data));
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memcpy(lsp->ls_stateid.data, res.u.stateid.data,
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sizeof(lsp->ls_stateid.data));
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lsp->ls_flags |= NFS_LOCK_INITIALIZED;
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} else if (status == -NFS4ERR_DENIED)
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status = -EAGAIN;
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nfs_free_seqid(lock_seqid);
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out:
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nfs_free_seqid(largs.lock_seqid);
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return status;
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}
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@ -729,22 +729,18 @@ static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
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WRITE64(arg->length);
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WRITE32(opargs->new_lock_owner);
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if (opargs->new_lock_owner){
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struct nfs_open_to_lock *ol = opargs->u.open_lock;
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RESERVE_SPACE(40);
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WRITE32(ol->open_seqid->sequence->counter);
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WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid));
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WRITE32(ol->lock_seqid->sequence->counter);
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WRITE64(ol->lock_owner.clientid);
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WRITE32(opargs->open_seqid->sequence->counter);
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WRITEMEM(opargs->open_stateid->data, sizeof(opargs->open_stateid->data));
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WRITE32(opargs->lock_seqid->sequence->counter);
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WRITE64(opargs->lock_owner.clientid);
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WRITE32(4);
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WRITE32(ol->lock_owner.id);
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WRITE32(opargs->lock_owner.id);
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}
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else {
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struct nfs_exist_lock *el = opargs->u.exist_lock;
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RESERVE_SPACE(20);
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WRITEMEM(&el->stateid, sizeof(el->stateid));
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WRITE32(el->seqid->sequence->counter);
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WRITEMEM(opargs->lock_stateid->data, sizeof(opargs->lock_stateid->data));
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WRITE32(opargs->lock_seqid->sequence->counter);
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}
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return 0;
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@ -1535,16 +1531,14 @@ static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_locka
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.nops = 2,
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};
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struct nfs_lock_opargs *opargs = args->u.lock;
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struct nfs_seqid *seqid;
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int status;
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if (opargs->new_lock_owner)
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seqid = opargs->u.open_lock->lock_seqid;
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else
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seqid = opargs->u.exist_lock->seqid;
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status = nfs_wait_on_sequence(seqid, req->rq_task);
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status = nfs_wait_on_sequence(opargs->lock_seqid, req->rq_task);
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if (status != 0)
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goto out;
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/* Do we need to do an open_to_lock_owner? */
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if (opargs->lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)
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opargs->new_lock_owner = 0;
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xdr_init_encode(&xdr, &req->rq_snd_buf, p);
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encode_compound_hdr(&xdr, &hdr);
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status = encode_putfh(&xdr, args->fh);
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@ -2908,8 +2902,8 @@ static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res)
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status = decode_op_hdr(xdr, OP_LOCK);
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if (status == 0) {
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READ_BUF(sizeof(nfs4_stateid));
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COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
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READ_BUF(sizeof(res->u.stateid.data));
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COPYMEM(res->u.stateid.data, sizeof(res->u.stateid.data));
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} else if (status == -NFS4ERR_DENIED)
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return decode_lock_denied(xdr, &res->u.denied);
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return status;
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@ -165,25 +165,14 @@ struct nfs_lowner {
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u32 id;
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};
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struct nfs_open_to_lock {
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struct nfs_seqid * open_seqid;
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nfs4_stateid open_stateid;
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struct nfs_seqid * lock_seqid;
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struct nfs_lowner lock_owner;
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};
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struct nfs_exist_lock {
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nfs4_stateid stateid;
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struct nfs_seqid * seqid;
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};
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struct nfs_lock_opargs {
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struct nfs_seqid * lock_seqid;
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nfs4_stateid * lock_stateid;
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struct nfs_seqid * open_seqid;
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nfs4_stateid * open_stateid;
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struct nfs_lowner lock_owner;
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__u32 reclaim;
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__u32 new_lock_owner;
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union {
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struct nfs_open_to_lock *open_lock;
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struct nfs_exist_lock *exist_lock;
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} u;
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};
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struct nfs_locku_opargs {
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