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authorFred Isaman <fred.isaman@gmail.com>2016-09-21 18:43:41 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2018-05-31 22:03:11 +0300
commit56f487f8c8fc5d6e582b79a86fc132d050129e15 (patch)
treeff955ea569d3e9d69fd3a82541da9dc49f25a020 /fs/nfs
parentdacb452db8733474c0317d499244c3c1ac769ef5 (diff)
downloadlinux-56f487f8c8fc5d6e582b79a86fc132d050129e15.tar.xz
pnfs: Add conditional encode/decode of LAYOUTGET within OPEN compound
Signed-off-by: Fred Isaman <fred.isaman@gmail.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/nfs4proc.c1
-rw-r--r--fs/nfs/nfs4xdr.c50
2 files changed, 47 insertions, 4 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 16b14aa99b79..b3f200208295 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1080,6 +1080,7 @@ struct nfs4_opendata {
struct nfs4_state_owner *owner;
struct nfs4_state *state;
struct iattr attrs;
+ struct nfs4_layoutget *lgp;
unsigned long timestamp;
bool rpc_done;
bool file_created;
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 6024980dfc9e..738a7be019d2 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -65,7 +65,13 @@
/* Mapping from NFS error code to "errno" error code. */
#define errno_NFSERR_IO EIO
+struct compound_hdr;
static int nfs4_stat_to_errno(int);
+static void encode_layoutget(struct xdr_stream *xdr,
+ const struct nfs4_layoutget_args *args,
+ struct compound_hdr *hdr);
+static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
+ struct nfs4_layoutget_res *res);
/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
#ifdef DEBUG
@@ -424,6 +430,8 @@ static int nfs4_stat_to_errno(int);
#define decode_sequence_maxsz 0
#define encode_layoutreturn_maxsz 0
#define decode_layoutreturn_maxsz 0
+#define encode_layoutget_maxsz 0
+#define decode_layoutget_maxsz 0
#endif /* CONFIG_NFS_V4_1 */
#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
@@ -476,14 +484,16 @@ static int nfs4_stat_to_errno(int);
encode_open_maxsz + \
encode_access_maxsz + \
encode_getfh_maxsz + \
- encode_getattr_maxsz)
+ encode_getattr_maxsz + \
+ encode_layoutget_maxsz)
#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_open_maxsz + \
decode_access_maxsz + \
decode_getfh_maxsz + \
- decode_getattr_maxsz)
+ decode_getattr_maxsz + \
+ decode_layoutget_maxsz)
#define NFS4_enc_open_confirm_sz \
(compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
@@ -497,13 +507,15 @@ static int nfs4_stat_to_errno(int);
encode_putfh_maxsz + \
encode_open_maxsz + \
encode_access_maxsz + \
- encode_getattr_maxsz)
+ encode_getattr_maxsz + \
+ encode_layoutget_maxsz)
#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_open_maxsz + \
decode_access_maxsz + \
- decode_getattr_maxsz)
+ decode_getattr_maxsz + \
+ decode_layoutget_maxsz)
#define NFS4_enc_open_downgrade_sz \
(compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
@@ -2070,6 +2082,13 @@ encode_layoutreturn(struct xdr_stream *xdr,
struct compound_hdr *hdr)
{
}
+
+static void
+encode_layoutget(struct xdr_stream *xdr,
+ const struct nfs4_layoutget_args *args,
+ struct compound_hdr *hdr)
+{
+}
#endif /* CONFIG_NFS_V4_1 */
/*
@@ -2316,6 +2335,12 @@ static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
if (args->access)
encode_access(xdr, args->access, &hdr);
encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
+ if (args->lg_args) {
+ encode_layoutget(xdr, args->lg_args, &hdr);
+ xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
+ args->lg_args->layout.pages,
+ 0, args->lg_args->layout.pglen);
+ }
encode_nops(&hdr);
}
@@ -2356,6 +2381,12 @@ static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
if (args->access)
encode_access(xdr, args->access, &hdr);
encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
+ if (args->lg_args) {
+ encode_layoutget(xdr, args->lg_args, &hdr);
+ xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
+ args->lg_args->layout.pages,
+ 0, args->lg_args->layout.pglen);
+ }
encode_nops(&hdr);
}
@@ -6182,6 +6213,13 @@ int decode_layoutreturn(struct xdr_stream *xdr,
{
return 0;
}
+
+static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
+ struct nfs4_layoutget_res *res)
+{
+ return 0;
+}
+
#endif /* CONFIG_NFS_V4_1 */
/*
@@ -6628,6 +6666,8 @@ static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
if (res->access_request)
decode_access(xdr, &res->access_supported, &res->access_result);
decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
+ if (res->lg_res)
+ decode_layoutget(xdr, rqstp, res->lg_res);
out:
return status;
}
@@ -6680,6 +6720,8 @@ static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
if (res->access_request)
decode_access(xdr, &res->access_supported, &res->access_result);
decode_getfattr(xdr, res->f_attr, res->server);
+ if (res->lg_res)
+ decode_layoutget(xdr, rqstp, res->lg_res);
out:
return status;
}