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NFSv4: Add encode/decode of the layoutreturn op in DELEGRETURN

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Add XDR encoding for the layoutreturn op, and storage for the layoutreturn
arguments to the DELEGRETURN compound.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2016-11-15 15:03:33 -05:00
parent cf80516579
commit 586f1c39da
3 changed files with 54 additions and 9 deletions
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50
fs/nfs/nfs4proc.c
View File

@ -5608,11 +5608,15 @@ struct nfs4_delegreturndata {
struct nfs_fh fh;
nfs4_stateid stateid;
unsigned long timestamp;
struct {
struct nfs4_layoutreturn_args arg;
struct nfs4_layoutreturn_res res;
u32 roc_barrier;
bool roc;
} lr;
struct nfs_fattr fattr;
int rpc_status;
struct inode *inode;
bool roc;
u32 roc_barrier;
};
static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
@ -5623,6 +5627,32 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
return;
trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status);
/* Handle Layoutreturn errors */
if (data->args.lr_args && task->tk_status != 0) {
switch(data->res.lr_ret) {
default:
data->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
break;
case 0:
data->args.lr_args = NULL;
data->res.lr_res = NULL;
break;
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_DELEG_REVOKED:
case -NFS4ERR_EXPIRED:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_UNKNOWN_LAYOUTTYPE:
case -NFS4ERR_WRONG_CRED:
data->args.lr_args = NULL;
data->res.lr_res = NULL;
data->res.lr_ret = 0;
rpc_restart_call_prepare(task);
return;
}
}
switch (task->tk_status) {
case 0:
renew_lease(data->res.server, data->timestamp);
@ -5646,8 +5676,8 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
}
}
data->rpc_status = task->tk_status;
if (data->roc && data->rpc_status == 0)
pnfs_roc_set_barrier(data->inode, data->roc_barrier);
if (data->lr.roc && data->rpc_status == 0)
pnfs_roc_set_barrier(data->inode, data->lr.roc_barrier);
}
static void nfs4_delegreturn_release(void *calldata)
@ -5656,7 +5686,7 @@ static void nfs4_delegreturn_release(void *calldata)
struct inode *inode = data->inode;
if (inode) {
if (data->roc)
if (data->lr.roc)
pnfs_roc_release(inode);
nfs_iput_and_deactive(inode);
}
@ -5669,11 +5699,12 @@ static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
d_data = (struct nfs4_delegreturndata *)data;
if (nfs4_wait_on_layoutreturn(d_data->inode, task))
if (!d_data->args.lr_args &&
nfs4_wait_on_layoutreturn(d_data->inode, task))
return;
if (d_data->roc)
pnfs_roc_get_barrier(d_data->inode, &d_data->roc_barrier);
if (d_data->lr.roc)
pnfs_roc_get_barrier(d_data->inode, &d_data->lr.roc_barrier);
nfs4_setup_sequence(d_data->res.server,
&d_data->args.seq_args,
@ -5720,12 +5751,13 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
nfs4_stateid_copy(&data->stateid, stateid);
data->res.fattr = &data->fattr;
data->res.server = server;
data->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
nfs_fattr_init(data->res.fattr);
data->timestamp = jiffies;
data->rpc_status = 0;
data->inode = nfs_igrab_and_active(inode);
if (data->inode)
data->roc = nfs4_roc(inode);
data->lr.roc = nfs4_roc(inode);
task_setup_data.callback_data = data;
msg.rpc_argp = &data->args;

10
fs/nfs/nfs4xdr.c
View File

@ -710,11 +710,13 @@ static int nfs4_stat_to_errno(int);
#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutreturn_maxsz + \
encode_delegreturn_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutreturn_maxsz + \
decode_delegreturn_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
@ -2683,6 +2685,8 @@ static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fhandle, &hdr);
if (args->lr_args)
encode_layoutreturn(xdr, args->lr_args, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_delegreturn(xdr, args->stateid, &hdr);
encode_nops(&hdr);
@ -6942,6 +6946,12 @@ static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
status = decode_putfh(xdr);
if (status != 0)
goto out;
if (res->lr_res) {
status = decode_layoutreturn(xdr, res->lr_res);
res->lr_ret = status;
if (status)
goto out;
}
status = decode_getfattr(xdr, res->fattr, res->server);
if (status != 0)
goto out;

3
include/linux/nfs_xdr.h
View File

@ -552,12 +552,15 @@ struct nfs4_delegreturnargs {
const struct nfs_fh *fhandle;
const nfs4_stateid *stateid;
const u32 * bitmask;
struct nfs4_layoutreturn_args *lr_args;
};
struct nfs4_delegreturnres {
struct nfs4_sequence_res seq_res;
struct nfs_fattr * fattr;
struct nfs_server *server;
struct nfs4_layoutreturn_res *lr_res;
int lr_ret;
};
/*