diff options
| author | Jeff Layton <jlayton@poochiereds.net> | 2015-06-09 19:43:57 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-06-16 11:15:31 -0400 |
| commit | 3a6bb738792500e8b4534c0350c13a132bac0492 (patch) | |
| tree | acc786a4630b7f3f6615795f7837a126df470f4e /fs/nfs/nfs4proc.c | |
| parent | 764ad8ba8cd4c6f836fca9378f8c5121aece0842 (diff) | |
nfs: convert setclientid and exchange_id encoders to use clp->cl_owner_id
...instead of buffers that are part of their arg structs. We already
hold a reference to the client, so we might as well use the allocated
buffer. In the event that we can't allocate the clp->cl_owner_id, then
just return -ENOMEM.
Note too that we switch from a GFP_KERNEL allocation here to GFP_NOFS.
It's possible we could end up trying to do a SETCLIENTID or EXCHANGE_ID
in order to reclaim some memory, and the GFP_KERNEL allocations in the
existing code could cause recursion back into NFS reclaim.
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/nfs4proc.c')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index d689ea37be84..b2afe9556147 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5046,7 +5046,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, struct nfs4_setclientid setclientid = { .sc_verifier = &sc_verifier, .sc_prog = program, - .sc_cb_ident = clp->cl_cb_ident, + .sc_clnt = clp, }; struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], @@ -5076,6 +5076,12 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, nfs4_init_nonuniform_client_string(clp, setclientid.sc_name, sizeof(setclientid.sc_name)); + + if (!clp->cl_owner_id) { + status = -ENOMEM; + goto out; + } + /* cb_client4 */ setclientid.sc_netid_len = nfs4_init_callback_netid(clp, @@ -5085,9 +5091,9 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, sizeof(setclientid.sc_uaddr), "%s.%u.%u", clp->cl_ipaddr, port >> 8, port & 255); - dprintk("NFS call setclientid auth=%s, '%.*s'\n", + dprintk("NFS call setclientid auth=%s, '%s'\n", clp->cl_rpcclient->cl_auth->au_ops->au_name, - setclientid.sc_name_len, setclientid.sc_name); + clp->cl_owner_id); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) { status = PTR_ERR(task); @@ -6850,9 +6856,14 @@ static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, nfs4_init_boot_verifier(clp, &verifier); args.id_len = nfs4_init_uniform_client_string(clp, args.id, sizeof(args.id)); - dprintk("NFS call exchange_id auth=%s, '%.*s'\n", + if (!clp->cl_owner_id) { + status = -ENOMEM; + goto out; + } + + dprintk("NFS call exchange_id auth=%s, '%s'\n", clp->cl_rpcclient->cl_auth->au_ops->au_name, - args.id_len, args.id); + clp->cl_owner_id); res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), GFP_NOFS); |