Commit d20581aa authored by Benny Halevy's avatar Benny Halevy Committed by Boaz Harrosh

pnfs: support for non-rpc layout drivers

Non-rpc layout driver such as for objects and blocks
implement their own I/O path and error handling logic.
Therefore bypass NFS-based error handling for these layout drivers.

[fix lseg ref-count bugs, and null de-refs]
[Fall out from: non-rpc layout drivers]
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
[get rid of PNFS_USE_RPC_CODE]
[get rid of __nfs4_write_done_cb]
[revert useless change in nfs4_write_done_cb]
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
parent e51b841d
...@@ -310,6 +310,7 @@ extern int nfs_migrate_page(struct address_space *, ...@@ -310,6 +310,7 @@ extern int nfs_migrate_page(struct address_space *,
#endif #endif
/* nfs4proc.c */ /* nfs4proc.c */
extern void __nfs4_read_done_cb(struct nfs_read_data *);
extern void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data); extern void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data);
extern int nfs4_init_client(struct nfs_client *clp, extern int nfs4_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms, const struct rpc_timeout *timeparms,
......
...@@ -3175,6 +3175,11 @@ static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, ...@@ -3175,6 +3175,11 @@ static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
return err; return err;
} }
void __nfs4_read_done_cb(struct nfs_read_data *data)
{
nfs_invalidate_atime(data->inode);
}
static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
{ {
struct nfs_server *server = NFS_SERVER(data->inode); struct nfs_server *server = NFS_SERVER(data->inode);
...@@ -3184,7 +3189,7 @@ static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) ...@@ -3184,7 +3189,7 @@ static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
return -EAGAIN; return -EAGAIN;
} }
nfs_invalidate_atime(data->inode); __nfs4_read_done_cb(data);
if (task->tk_status > 0) if (task->tk_status > 0)
renew_lease(server, data->timestamp); renew_lease(server, data->timestamp);
return 0; return 0;
...@@ -3198,7 +3203,8 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) ...@@ -3198,7 +3203,8 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
if (!nfs4_sequence_done(task, &data->res.seq_res)) if (!nfs4_sequence_done(task, &data->res.seq_res))
return -EAGAIN; return -EAGAIN;
return data->read_done_cb(task, data); return data->read_done_cb ? data->read_done_cb(task, data) :
nfs4_read_done_cb(task, data);
} }
static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
...@@ -3243,7 +3249,8 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) ...@@ -3243,7 +3249,8 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
{ {
if (!nfs4_sequence_done(task, &data->res.seq_res)) if (!nfs4_sequence_done(task, &data->res.seq_res))
return -EAGAIN; return -EAGAIN;
return data->write_done_cb(task, data); return data->write_done_cb ? data->write_done_cb(task, data) :
nfs4_write_done_cb(task, data);
} }
/* Reset the the nfs_write_data to send the write to the MDS. */ /* Reset the the nfs_write_data to send the write to the MDS. */
......
...@@ -243,7 +243,7 @@ put_lseg_common(struct pnfs_layout_segment *lseg) ...@@ -243,7 +243,7 @@ put_lseg_common(struct pnfs_layout_segment *lseg)
{ {
struct inode *inode = lseg->pls_layout->plh_inode; struct inode *inode = lseg->pls_layout->plh_inode;
BUG_ON(test_bit(NFS_LSEG_VALID, &lseg->pls_flags)); WARN_ON(test_bit(NFS_LSEG_VALID, &lseg->pls_flags));
list_del_init(&lseg->pls_list); list_del_init(&lseg->pls_list);
if (list_empty(&lseg->pls_layout->plh_segs)) { if (list_empty(&lseg->pls_layout->plh_segs)) {
set_bit(NFS_LAYOUT_DESTROYED, &lseg->pls_layout->plh_flags); set_bit(NFS_LAYOUT_DESTROYED, &lseg->pls_layout->plh_flags);
...@@ -1054,6 +1054,29 @@ pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode) ...@@ -1054,6 +1054,29 @@ pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode)
pgio->pg_test = (ld && ld->pg_test) ? pnfs_write_pg_test : NULL; pgio->pg_test = (ld && ld->pg_test) ? pnfs_write_pg_test : NULL;
} }
/*
* Called by non rpc-based layout drivers
*/
int
pnfs_ld_write_done(struct nfs_write_data *data)
{
int status;
if (!data->pnfs_error) {
pnfs_set_layoutcommit(data);
data->mds_ops->rpc_call_done(&data->task, data);
data->mds_ops->rpc_release(data);
return 0;
}
dprintk("%s: pnfs_error=%d, retry via MDS\n", __func__,
data->pnfs_error);
status = nfs_initiate_write(data, NFS_CLIENT(data->inode),
data->mds_ops, NFS_FILE_SYNC);
return status ? : -EAGAIN;
}
EXPORT_SYMBOL_GPL(pnfs_ld_write_done);
enum pnfs_try_status enum pnfs_try_status
pnfs_try_to_write_data(struct nfs_write_data *wdata, pnfs_try_to_write_data(struct nfs_write_data *wdata,
const struct rpc_call_ops *call_ops, int how) const struct rpc_call_ops *call_ops, int how)
...@@ -1078,6 +1101,29 @@ pnfs_try_to_write_data(struct nfs_write_data *wdata, ...@@ -1078,6 +1101,29 @@ pnfs_try_to_write_data(struct nfs_write_data *wdata,
return trypnfs; return trypnfs;
} }
/*
* Called by non rpc-based layout drivers
*/
int
pnfs_ld_read_done(struct nfs_read_data *data)
{
int status;
if (!data->pnfs_error) {
__nfs4_read_done_cb(data);
data->mds_ops->rpc_call_done(&data->task, data);
data->mds_ops->rpc_release(data);
return 0;
}
dprintk("%s: pnfs_error=%d, retry via MDS\n", __func__,
data->pnfs_error);
status = nfs_initiate_read(data, NFS_CLIENT(data->inode),
data->mds_ops);
return status ? : -EAGAIN;
}
EXPORT_SYMBOL_GPL(pnfs_ld_read_done);
/* /*
* Call the appropriate parallel I/O subsystem read function. * Call the appropriate parallel I/O subsystem read function.
*/ */
......
...@@ -165,6 +165,8 @@ void pnfs_roc_set_barrier(struct inode *ino, u32 barrier); ...@@ -165,6 +165,8 @@ void pnfs_roc_set_barrier(struct inode *ino, u32 barrier);
bool pnfs_roc_drain(struct inode *ino, u32 *barrier); bool pnfs_roc_drain(struct inode *ino, u32 *barrier);
void pnfs_set_layoutcommit(struct nfs_write_data *wdata); void pnfs_set_layoutcommit(struct nfs_write_data *wdata);
int pnfs_layoutcommit_inode(struct inode *inode, bool sync); int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
int pnfs_ld_write_done(struct nfs_write_data *);
int pnfs_ld_read_done(struct nfs_read_data *);
/* pnfs_dev.c */ /* pnfs_dev.c */
struct nfs4_deviceid_node { struct nfs4_deviceid_node {
......
...@@ -1087,6 +1087,7 @@ struct nfs_read_data { ...@@ -1087,6 +1087,7 @@ struct nfs_read_data {
const struct rpc_call_ops *mds_ops; const struct rpc_call_ops *mds_ops;
int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data); int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
__u64 mds_offset; __u64 mds_offset;
int pnfs_error;
struct page *page_array[NFS_PAGEVEC_SIZE]; struct page *page_array[NFS_PAGEVEC_SIZE];
}; };
...@@ -1112,6 +1113,7 @@ struct nfs_write_data { ...@@ -1112,6 +1113,7 @@ struct nfs_write_data {
unsigned long timestamp; /* For lease renewal */ unsigned long timestamp; /* For lease renewal */
#endif #endif
__u64 mds_offset; /* Filelayout dense stripe */ __u64 mds_offset; /* Filelayout dense stripe */
int pnfs_error;
struct page *page_array[NFS_PAGEVEC_SIZE]; struct page *page_array[NFS_PAGEVEC_SIZE];
}; };
......
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