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NFS: add ca_source_server<> to COPY 

Support only one source server address: the same address that
the client and source server use.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
This commit is contained in:
Olga Kornievskaia 2019-06-04 11:54:18 -04:00 committed by Olga Kornievskaia
parent 0491567b51
commit 1d38f3f0d7
5 changed files with 36 additions and 13 deletions
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3
fs/nfs/nfs42.h
View File

@ -15,7 +15,8 @@
/* nfs4.2proc.c */
#ifdef CONFIG_NFS_V4_2
int nfs42_proc_allocate(struct file *, loff_t, loff_t);
ssize_t nfs42_proc_copy(struct file *, loff_t, struct file *, loff_t, size_t);
ssize_t nfs42_proc_copy(struct file *, loff_t, struct file *, loff_t, size_t,
struct nl4_server *, nfs4_stateid *);
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 *,

26
fs/nfs/nfs42proc.c
View File

@ -243,7 +243,9 @@ static ssize_t _nfs42_proc_copy(struct file *src,
struct file *dst,
struct nfs_lock_context *dst_lock,
struct nfs42_copy_args *args,
struct nfs42_copy_res *res)
struct nfs42_copy_res *res,
struct nl4_server *nss,
nfs4_stateid *cnr_stateid)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
@ -257,11 +259,15 @@ static ssize_t _nfs42_proc_copy(struct file *src,
size_t count = args->count;
ssize_t status;
status = nfs4_set_rw_stateid(&args->src_stateid, src_lock->open_context,
src_lock, FMODE_READ);
if (status)
return status;
if (nss) {
args->cp_src = nss;
nfs4_stateid_copy(&args->src_stateid, cnr_stateid);
} else {
status = nfs4_set_rw_stateid(&args->src_stateid,
src_lock->open_context, src_lock, FMODE_READ);
if (status)
return status;
}
status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
pos_src, pos_src + (loff_t)count - 1);
if (status)
@ -325,8 +331,9 @@ static ssize_t _nfs42_proc_copy(struct file *src,
}
ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
struct file *dst, loff_t pos_dst,
size_t count)
struct file *dst, loff_t pos_dst, size_t count,
struct nl4_server *nss,
nfs4_stateid *cnr_stateid)
{
struct nfs_server *server = NFS_SERVER(file_inode(dst));
struct nfs_lock_context *src_lock;
@ -368,7 +375,8 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
inode_lock(file_inode(dst));
err = _nfs42_proc_copy(src, src_lock,
dst, dst_lock,
&args, &res);
&args, &res,
nss, cnr_stateid);
inode_unlock(file_inode(dst));
if (err >= 0)

12
fs/nfs/nfs42xdr.c
View File

@ -21,7 +21,10 @@
#define encode_copy_maxsz (op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_STATEID_SIZE) + \
XDR_QUADLEN(NFS4_STATEID_SIZE) + \
2 + 2 + 2 + 1 + 1 + 1)
2 + 2 + 2 + 1 + 1 + 1 +\
1 + /* One cnr_source_server */\
1 + /* nl4_type */ \
1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
#define decode_copy_maxsz (op_decode_hdr_maxsz + \
NFS42_WRITE_RES_SIZE + \
1 /* cr_consecutive */ + \
@ -216,7 +219,12 @@ static void encode_copy(struct xdr_stream *xdr,
encode_uint32(xdr, 1); /* consecutive = true */
encode_uint32(xdr, args->sync);
encode_uint32(xdr, 0); /* src server list */
if (args->cp_src == NULL) { /* intra-ssc */
encode_uint32(xdr, 0); /* no src server list */
return;
}
encode_uint32(xdr, 1); /* supporting 1 server */
encode_nl4_server(xdr, args->cp_src);
}
static void encode_offload_cancel(struct xdr_stream *xdr,

7
fs/nfs/nfs4file.c
View File

@ -134,6 +134,8 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
size_t count, unsigned int flags)
{
struct nfs42_copy_notify_res *cn_resp = NULL;
struct nl4_server *nss = NULL;
nfs4_stateid *cnrs = NULL;
ssize_t ret;
/* Only offload copy if superblock is the same */
@ -154,8 +156,11 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
ret = -EOPNOTSUPP;
goto out;
}
nss = &cn_resp->cnr_src;
cnrs = &cn_resp->cnr_stateid;
}
ret = nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count);
ret = nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count,
nss, cnrs);
out:
kfree(cn_resp);
return ret;

1
include/linux/nfs_xdr.h
View File

@ -1435,6 +1435,7 @@ struct nfs42_copy_args {
u64 count;
bool sync;
struct nl4_server *cp_src;
};
struct nfs42_write_res {