From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Peng Tao <tao.peng@xxxxxxxxxxxxxxx>
---
fs/nfs/nfs42.h | 7 ++-
fs/nfs/nfs42proc.c | 27 +++++++++++
fs/nfs/nfs42xdr.c | 122 ++++++++++++++++++++++++++++++++++++++++++++++++
fs/nfs/nfs4_fs.h | 1 +
fs/nfs/nfs4proc.c | 4 +-
fs/nfs/nfs4xdr.c | 1 +
include/linux/nfs4.h | 1 +
include/linux/nfs_xdr.h | 43 +++++++++++++++++
8 files changed, 203 insertions(+), 3 deletions(-)
diff --git a/fs/nfs/nfs42.h b/fs/nfs/nfs42.h
index 7afb894..579cb0e 100644
--- a/fs/nfs/nfs42.h
+++ b/fs/nfs/nfs42.h
@@ -5,11 +5,16 @@
#ifndef __LINUX_FS_NFS_NFS4_2_H
#define __LINUX_FS_NFS_NFS4_2_H
+/* FIXME: two LAYOUTSTATS calls per compound at most! Do we need to support
+ * more? Need to consider not to pre-alloc too much for a compound. */
+#define PNFS_LAYOUTSTATS_MAXDEV (4)
+
/* nfs4.2proc.c */
int nfs42_proc_allocate(struct file *, loff_t, loff_t);
int nfs42_proc_deallocate(struct file *, loff_t, loff_t);
loff_t nfs42_proc_llseek(struct file *, loff_t, int);
-
+int nfs42_proc_layoutstats_generic(struct nfs_server *,
+ struct nfs42_layoutstat_data *);
/* nfs4.2xdr.h */
extern struct rpc_procinfo nfs4_2_procedures[];
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index 3a9e752..ac92968 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -165,3 +165,30 @@ loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
}
+
+static const struct rpc_call_ops nfs42_layoutstat_ops = {
+};
+
+int nfs42_proc_layoutstats_generic(struct nfs_server *server,
+ struct nfs42_layoutstat_data *data)
+{
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
+ .rpc_argp = &data->args,
+ .rpc_resp = &data->res,
+ };
+ struct rpc_task_setup task_setup = {
+ .rpc_client = server->client,
+ .rpc_message = &msg,
+ .callback_ops = &nfs42_layoutstat_ops,
+ .callback_data = data,
+ .flags = RPC_TASK_ASYNC,
+ };
+ struct rpc_task *task;
+
+ nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
+ task = rpc_run_task(&task_setup);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
+ return 0;
+}
diff --git a/fs/nfs/nfs42xdr.c b/fs/nfs/nfs42xdr.c
index 1a25b27..9aae020 100644
--- a/fs/nfs/nfs42xdr.c
+++ b/fs/nfs/nfs42xdr.c
@@ -4,6 +4,8 @@
#ifndef __LINUX_FS_NFS_NFS4_2XDR_H
#define __LINUX_FS_NFS_NFS4_2XDR_H
+#include "nfs42.h"
+
#define encode_fallocate_maxsz (encode_stateid_maxsz + \
2 /* offset */ + \
2 /* length */)
@@ -22,6 +24,16 @@
1 /* whence */ + \
2 /* offset */ + \
2 /* length */)
+#define encode_io_info_maxsz 4
+#define encode_layoutstats_maxsz (op_decode_hdr_maxsz + \
+ 2 /* offset */ + \
+ 2 /* length */ + \
+ encode_stateid_maxsz + \
+ encode_io_info_maxsz + \
+ encode_io_info_maxsz + \
+ 1 /* opaque devaddr4 length */ + \
+ XDR_QUADLEN(PNFS_LAYOUTSTATS_MAXSIZE))
+#define decode_layoutstats_maxsz (op_decode_hdr_maxsz)
#define NFS4_enc_allocate_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
@@ -45,6 +57,14 @@
#define NFS4_dec_seek_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_seek_maxsz)
+#define NFS4_enc_layoutstats_sz (compound_encode_hdr_maxsz + \
+ encode_sequence_maxsz + \
+ encode_putfh_maxsz + \
+ PNFS_LAYOUTSTATS_MAXDEV * encode_layoutstats_maxsz)
+#define NFS4_dec_layoutstats_sz (compound_decode_hdr_maxsz + \
+ decode_sequence_maxsz + \
+ decode_putfh_maxsz + \
+ PNFS_LAYOUTSTATS_MAXDEV * decode_layoutstats_maxsz)
static void encode_fallocate(struct xdr_stream *xdr,
@@ -81,6 +101,33 @@ static void encode_seek(struct xdr_stream *xdr,
encode_uint32(xdr, args->sa_what);
}
+static void encode_layoutstats(struct xdr_stream *xdr,
+ struct nfs42_layoutstat_args *args,
+ struct nfs42_layoutstat_devinfo *devinfo,
+ struct compound_hdr *hdr)
+{
+ __be32 *p;
+
+ encode_op_hdr(xdr, OP_LAYOUTSTATS, decode_layoutstats_maxsz, hdr);
+ p = reserve_space(xdr, 8 + 8);
+ p = xdr_encode_hyper(p, devinfo->offset);
+ p = xdr_encode_hyper(p, devinfo->length);
+ encode_nfs4_stateid(xdr, &args->stateid);
+ p = reserve_space(xdr, 4*8 + NFS4_DEVICEID4_SIZE + 4);
+ p = xdr_encode_hyper(p, devinfo->read_count);
+ p = xdr_encode_hyper(p, devinfo->read_bytes);
+ p = xdr_encode_hyper(p, devinfo->write_count);
+ p = xdr_encode_hyper(p, devinfo->write_bytes);
+ p = xdr_encode_opaque_fixed(p, devinfo->dev_id.data,
+ NFS4_DEVICEID4_SIZE);
+ /* Encode layoutupdate4 */
+ *p++ = cpu_to_be32(devinfo->layout_type);
+ if (devinfo->layoutstats_encode != NULL)
+ devinfo->layoutstats_encode(xdr, args, devinfo);
+ else
+ encode_uint32(xdr, 0);
+}
+
/*
* Encode ALLOCATE request
*/
@@ -137,6 +184,28 @@ static void nfs4_xdr_enc_seek(struct rpc_rqst *req,
encode_nops(&hdr);
}
+/*
+ * Encode LAYOUTSTATS request
+ */
+static void nfs4_xdr_enc_layoutstats(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs42_layoutstat_args *args)
+{
+ int i;
+
+ 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, args->fh, &hdr);
+ WARN_ON(args->num_dev > PNFS_LAYOUTSTATS_MAXDEV);
+ for (i = 0; i < args->num_dev; i++)
+ encode_layoutstats(xdr, args, &args->devinfo[i], &hdr);
+ encode_nops(&hdr);
+}
+
static int decode_allocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
{
return decode_op_hdr(xdr, OP_ALLOCATE);
@@ -169,6 +238,28 @@ out_overflow:
return -EIO;
}
+static int decode_layoutstats(struct xdr_stream *xdr,
+ struct nfs42_layoutstat_res *res)
+{
+ int status;
+ __be32 *p;
+
+ status = decode_op_hdr(xdr, OP_LAYOUTSTATS);
+ if (status)
+ return status;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+
+ res->rpc_status = be32_to_cpup(p++);
+ return 0;
+
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
/*
* Decode ALLOCATE request
*/
@@ -246,4 +337,35 @@ static int nfs4_xdr_dec_seek(struct rpc_rqst *rqstp,
out:
return status;
}
+
+/*
+ * Decode LAYOUTSTATS request
+ */
+static int nfs4_xdr_dec_layoutstats(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs42_layoutstat_res *res)
+{
+ struct compound_hdr hdr;
+ int status, i;
+
+ 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;
+ WARN_ON(res->num_dev > PNFS_LAYOUTSTATS_MAXDEV);
+ for (i = 0; i < res->num_dev; i++) {
+ status = decode_layoutstats(xdr, res);
+ if (status)
+ goto out;
+ }
+out:
+ res->rpc_status = status;
+ return status;
+}
+
#endif /* __LINUX_FS_NFS_NFS4_2XDR_H */
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index fdef424..ea3bee9 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -233,6 +233,7 @@ extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception
extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *,
struct rpc_message *, struct nfs4_sequence_args *,
struct nfs4_sequence_res *, int);
+extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int);
extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *);
extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 55e1e3a..a231691 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -482,8 +482,8 @@ struct nfs4_call_sync_data {
struct nfs4_sequence_res *seq_res;
};
-static void nfs4_init_sequence(struct nfs4_sequence_args *args,
- struct nfs4_sequence_res *res, int cache_reply)
+void nfs4_init_sequence(struct nfs4_sequence_args *args,
+ struct nfs4_sequence_res *res, int cache_reply)
{
args->sa_slot = NULL;
args->sa_cache_this = cache_reply;
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 0aea978..102239d 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -7427,6 +7427,7 @@ struct rpc_procinfo nfs4_procedures[] = {
PROC(SEEK, enc_seek, dec_seek),
PROC(ALLOCATE, enc_allocate, dec_allocate),
PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
+ PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
#endif /* CONFIG_NFS_V4_2 */
};
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 32201c2..b8e72aa 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -500,6 +500,7 @@ enum {
NFSPROC4_CLNT_SEEK,
NFSPROC4_CLNT_ALLOCATE,
NFSPROC4_CLNT_DEALLOCATE,
+ NFSPROC4_CLNT_LAYOUTSTATS,
};
/* nfs41 types */
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 93ab607..0b75d54 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -316,6 +316,49 @@ struct nfs4_layoutreturn {
int rpc_status;
};
+#define PNFS_LAYOUTSTATS_MAXSIZE 256
+
+struct nfs42_layoutstat_args;
+struct nfs42_layoutstat_devinfo;
+typedef void (*layoutstats_encode_t)(struct xdr_stream *,
+ struct nfs42_layoutstat_args *,
+ struct nfs42_layoutstat_devinfo *);
+
+/* Per file per deviceid layoutstats */
+struct nfs42_layoutstat_devinfo {
+ struct nfs4_deviceid dev_id;
+ __u64 offset;
+ __u64 length;
+ __u64 read_count;
+ __u64 read_bytes;
+ __u64 write_count;
+ __u64 write_bytes;
+ __u32 layout_type;
+ layoutstats_encode_t layoutstats_encode;
+ void *layout_private;
+};
+
+struct nfs42_layoutstat_args {
+ struct nfs4_sequence_args seq_args;
+ struct nfs_fh *fh;
+ struct inode *inode;
+ nfs4_stateid stateid;
+ int num_dev;
+ struct nfs42_layoutstat_devinfo *devinfo;
+};
+
+struct nfs42_layoutstat_res {
+ struct nfs4_sequence_res seq_res;
+ int num_dev;
+ int rpc_status;
+};
+
+struct nfs42_layoutstat_data {
+ struct inode *inode;
+ struct nfs42_layoutstat_args args;
+ struct nfs42_layoutstat_res res;
+};
+
struct stateowner_id {
__u64 create_time;
__u32 uniquifier;
--
1.8.3.1
--
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