Commit ce0887ac authored by Olga Kornievskaia's avatar Olga Kornievskaia Committed by J. Bruce Fields

NFSD add nfs4 inter ssc to nfsd4_copy

Given a universal address, mount the source server from the destination
server.  Use an internal mount. Call the NFS client nfs42_ssc_open to
obtain the NFS struct file suitable for nfsd_copy_range.

Ability to do "inter" server-to-server depends on the an nfsd kernel
parameter "inter_copy_offload_enable".
Signed-off-by: default avatarOlga Kornievskaia <kolga@netapp.com>
parent b9e8638e
This diff is collapsed.
......@@ -5681,7 +5681,8 @@ _free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cpntf_state *cps)
* copy stateid. Look up the copy notify stateid from the
* idr structure and take a reference on it.
*/
static __be32 _find_cpntf_state(struct nfsd_net *nn, stateid_t *st,
__be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st,
struct nfs4_client *clp,
struct nfs4_cpntf_state **cps)
{
copy_stateid_t *cps_t;
......@@ -5696,11 +5697,15 @@ static __be32 _find_cpntf_state(struct nfsd_net *nn, stateid_t *st,
cp_stateid);
if (state->cp_stateid.sc_type != NFS4_COPYNOTIFY_STID)
return nfserr_bad_stateid;
if (!clp)
refcount_inc(&state->cp_stateid.sc_count);
else
_free_cpntf_state_locked(nn, state);
}
spin_unlock(&nn->s2s_cp_lock);
if (!state)
return nfserr_bad_stateid;
if (!clp && state)
*cps = state;
return 0;
}
......@@ -5712,7 +5717,7 @@ static __be32 find_cpntf_state(struct nfsd_net *nn, stateid_t *st,
struct nfs4_cpntf_state *cps = NULL;
struct nfsd4_compound_state cstate;
status = _find_cpntf_state(nn, st, &cps);
status = manage_cpntf_state(nn, st, NULL, &cps);
if (status)
return status;
......
......@@ -31,6 +31,12 @@
#define NFSDDBG_FACILITY NFSDDBG_SVC
bool inter_copy_offload_enable;
EXPORT_SYMBOL_GPL(inter_copy_offload_enable);
module_param(inter_copy_offload_enable, bool, 0644);
MODULE_PARM_DESC(inter_copy_offload_enable,
"Enable inter server to server copy offload. Default: false");
extern struct svc_program nfsd_program;
static int nfsd(void *vrqstp);
#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
......
......@@ -680,6 +680,9 @@ extern struct nfsd4_copy *
find_async_copy(struct nfs4_client *clp, stateid_t *staetid);
extern void nfs4_put_cpntf_state(struct nfsd_net *nn,
struct nfs4_cpntf_state *cps);
extern __be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st,
struct nfs4_client *clp,
struct nfs4_cpntf_state **cps);
static inline void get_nfs4_file(struct nfs4_file *fi)
{
refcount_inc(&fi->fi_ref);
......
......@@ -549,7 +549,12 @@ struct nfsd4_copy {
struct task_struct *copy_task;
refcount_t refcount;
bool stopped;
struct vfsmount *ss_mnt;
struct nfs_fh c_fh;
nfs4_stateid stateid;
};
extern bool inter_copy_offload_enable;
struct nfsd4_seek {
/* request */
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment