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

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

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
hifive-unleashed-5.1
Trond Myklebust 2016-11-15 14:56:07 -05:00
parent d8434d4c54
commit cf80516579
3 changed files with 69 additions and 9 deletions
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49
fs/nfs/nfs4proc.c
View File

@ -3035,10 +3035,14 @@ struct nfs4_closedata {
struct nfs4_state *state;
struct nfs_closeargs arg;
struct nfs_closeres res;
struct {
struct nfs4_layoutreturn_args arg;
struct nfs4_layoutreturn_res res;
u32 roc_barrier;
bool roc;
} lr;
struct nfs_fattr fattr;
unsigned long timestamp;
bool roc;
u32 roc_barrier;
};
static void nfs4_free_closedata(void *data)
@ -3047,7 +3051,7 @@ static void nfs4_free_closedata(void *data)
struct nfs4_state_owner *sp = calldata->state->owner;
struct super_block *sb = calldata->state->inode->i_sb;
if (calldata->roc)
if (calldata->lr.roc)
pnfs_roc_release(calldata->state->inode);
nfs4_put_open_state(calldata->state);
nfs_free_seqid(calldata->arg.seqid);
@ -3067,15 +3071,41 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
if (!nfs4_sequence_done(task, &calldata->res.seq_res))
return;
trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status);
/* Handle Layoutreturn errors */
if (calldata->arg.lr_args && task->tk_status != 0) {
switch (calldata->res.lr_ret) {
default:
calldata->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
break;
case 0:
calldata->arg.lr_args = NULL;
calldata->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:
calldata->arg.lr_args = NULL;
calldata->res.lr_res = NULL;
calldata->res.lr_ret = 0;
rpc_restart_call_prepare(task);
return;
}
}
/* hmm. we are done with the inode, and in the process of freeing
* the state_owner. we keep this around to process errors
*/
switch (task->tk_status) {
case 0:
res_stateid = &calldata->res.stateid;
if (calldata->roc)
if (calldata->lr.roc)
pnfs_roc_set_barrier(state->inode,
calldata->roc_barrier);
calldata->lr.roc_barrier);
renew_lease(server, calldata->timestamp);
break;
case -NFS4ERR_ADMIN_REVOKED:
@ -3151,7 +3181,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
goto out_no_action;
}
if (nfs4_wait_on_layoutreturn(inode, task)) {
if (!calldata->arg.lr_args && nfs4_wait_on_layoutreturn(inode, task)) {
nfs_release_seqid(calldata->arg.seqid);
goto out_wait;
}
@ -3165,8 +3195,8 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
else
calldata->arg.bitmask = NULL;
}
if (calldata->roc)
pnfs_roc_get_barrier(inode, &calldata->roc_barrier);
if (calldata->lr.roc)
pnfs_roc_get_barrier(inode, &calldata->lr.roc_barrier);
calldata->arg.share_access =
nfs4_map_atomic_open_share(NFS_SERVER(inode),
@ -3250,7 +3280,8 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
calldata->res.server = server;
calldata->roc = nfs4_roc(state->inode);
calldata->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
calldata->lr.roc = nfs4_roc(state->inode);
nfs_sb_active(calldata->inode->i_sb);
msg.rpc_argp = &calldata->arg;

26
fs/nfs/nfs4xdr.c
View File

@ -415,6 +415,8 @@ static int nfs4_stat_to_errno(int);
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
#define encode_layoutreturn_maxsz 0
#define decode_layoutreturn_maxsz 0
#endif /* CONFIG_NFS_V4_1 */
#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
@ -508,11 +510,13 @@ static int nfs4_stat_to_errno(int);
#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutreturn_maxsz + \
encode_close_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutreturn_maxsz + \
decode_close_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
@ -2061,6 +2065,13 @@ static void encode_free_stateid(struct xdr_stream *xdr,
encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
encode_nfs4_stateid(xdr, &args->stateid);
}
#else
static inline void
encode_layoutreturn(struct xdr_stream *xdr,
const struct nfs4_layoutreturn_args *args,
struct compound_hdr *hdr)
{
}
#endif /* CONFIG_NFS_V4_1 */
/*
@ -2248,6 +2259,8 @@ static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
if (args->lr_args)
encode_layoutreturn(xdr, args->lr_args, &hdr);
encode_close(xdr, args, &hdr);
if (args->bitmask != NULL)
encode_getfattr(xdr, args->bitmask, &hdr);
@ -6088,6 +6101,13 @@ static int decode_free_stateid(struct xdr_stream *xdr,
res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
return res->status;
}
#else
static inline
int decode_layoutreturn(struct xdr_stream *xdr,
struct nfs4_layoutreturn_res *res)
{
return 0;
}
#endif /* CONFIG_NFS_V4_1 */
/*
@ -6440,6 +6460,12 @@ static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
status = decode_putfh(xdr);
if (status)
goto out;
if (res->lr_res) {
status = decode_layoutreturn(xdr, res->lr_res);
res->lr_ret = status;
if (status)
goto out;
}
status = decode_close(xdr, res);
if (status != 0)
goto out;

3
include/linux/nfs_xdr.h
View File

@ -469,6 +469,7 @@ struct nfs_closeargs {
fmode_t fmode;
u32 share_access;
const u32 * bitmask;
struct nfs4_layoutreturn_args *lr_args;
};
struct nfs_closeres {
@ -477,6 +478,8 @@ struct nfs_closeres {
struct nfs_fattr * fattr;
struct nfs_seqid * seqid;
const struct nfs_server *server;
struct nfs4_layoutreturn_res *lr_res;
int lr_ret;
};
/*
* * Arguments to the lock,lockt, and locku call.