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pnfs: layoutreturn

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NFSv4.1 LAYOUTRETURN implementation

Currently, does not support layout-type payload encoding.

Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Andy Adamson <andros@citi.umich.edu>
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com>
Signed-off-by: Fred Isaman <iisaman@citi.umich.edu>
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Marc Eshel <eshel@almaden.ibm.com>
Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn>
[call pnfs_return_layout right before pnfs_destroy_layout]
[remove assert_spin_locked from pnfs_clear_lseg_list]
[remove wait parameter from the layoutreturn path.]
[remove return_type field from nfs4_layoutreturn_args]
[remove range from nfs4_layoutreturn_args]
[no need to send layoutcommit from _pnfs_return_layout]
[don't wait on sync layoutreturn]
[fix layout stateid in layoutreturn args]
[fixed NULL deref in _pnfs_return_layout]
[removed recaim member of nfs4_layoutreturn_args]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
This commit is contained in:
Benny Halevy
2011-05-22 19:52:37 +03:00
committed by Boaz Harrosh
parent 04f8345038
commit cbe8260369
7 changed files with 274 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

111
fs/nfs/nfs4xdr.c
View File

@@ -338,7 +338,11 @@ static int nfs4_stat_to_errno(int);
1 /* layoutupdate4 layout type */ + \
1 /* NULL filelayout layoutupdate4 payload */)
#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
encode_stateid_maxsz + \
1 /* FIXME: opaque lrf_body always empty at the moment */)
#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
1 + decode_stateid_maxsz)
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
@@ -760,7 +764,14 @@ static int nfs4_stat_to_errno(int);
decode_putfh_maxsz + \
decode_layoutcommit_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutreturn_maxsz)
#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutreturn_maxsz)
const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_encode_hdr_maxsz +
@@ -1889,6 +1900,31 @@ encode_layoutcommit(struct xdr_stream *xdr,
hdr->replen += decode_layoutcommit_maxsz;
return 0;
}
static void
encode_layoutreturn(struct xdr_stream *xdr,
const struct nfs4_layoutreturn_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
p = reserve_space(xdr, 20);
*p++ = cpu_to_be32(OP_LAYOUTRETURN);
*p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
*p++ = cpu_to_be32(args->layout_type);
*p++ = cpu_to_be32(IOMODE_ANY);
*p = cpu_to_be32(RETURN_FILE);
p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE);
p = xdr_encode_hyper(p, 0);
p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
spin_lock(&args->inode->i_lock);
xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
spin_unlock(&args->inode->i_lock);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(0);
hdr->nops++;
hdr->replen += decode_layoutreturn_maxsz;
}
#endif /* CONFIG_NFS_V4_1 */
/*
@@ -2706,9 +2742,9 @@ static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
/*
* Encode LAYOUTCOMMIT request
*/
static int nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_layoutcommit_args *args)
static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_layoutcommit_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
@@ -2720,7 +2756,24 @@ static int nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
encode_layoutcommit(xdr, args, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
return 0;
}
/*
* Encode LAYOUTRETURN request
*/
static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_layoutreturn_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, NFS_FH(args->inode), &hdr);
encode_layoutreturn(xdr, args, &hdr);
encode_nops(&hdr);
}
#endif /* CONFIG_NFS_V4_1 */
@@ -5203,6 +5256,27 @@ out_overflow:
return -EIO;
}
static int decode_layoutreturn(struct xdr_stream *xdr,
struct nfs4_layoutreturn_res *res)
{
__be32 *p;
int status;
status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
if (status)
return status;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
res->lrs_present = be32_to_cpup(p);
if (res->lrs_present)
status = decode_stateid(xdr, &res->stateid);
return status;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_layoutcommit(struct xdr_stream *xdr,
struct rpc_rqst *req,
struct nfs4_layoutcommit_res *res)
@@ -6319,6 +6393,30 @@ out:
return status;
}
/*
* Decode LAYOUTRETURN response
*/
static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_layoutreturn_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_layoutreturn(xdr, res);
out:
return status;
}
/*
* Decode LAYOUTCOMMIT response
*/
@@ -6547,6 +6645,7 @@ struct rpc_procinfo nfs4_procedures[] = {
PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
#endif /* CONFIG_NFS_V4_1 */
};