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NFSv4.1 identify and mark RPC tasks that can move between transports

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In preparation for when we can re-try a task on a different transport,
identify and mark such RPC tasks as moveable. Only 4.1+ operarations can
be re-tried on a different transport.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Olga Kornievskaia 2021-06-23 23:28:51 -04:00 committed by Trond Myklebust
parent 5b7eb78486
commit 85e39feead
4 changed files with 46 additions and 8 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

38
fs/nfs/nfs4proc.c
View file

@ -1155,7 +1155,11 @@ static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
struct nfs4_sequence_args *args,
struct nfs4_sequence_res *res)
{
return nfs4_do_call_sync(clnt, server, msg, args, res, 0);
unsigned short task_flags = 0;
if (server->nfs_client->cl_minorversion)
task_flags = RPC_TASK_MOVEABLE;
return nfs4_do_call_sync(clnt, server, msg, args, res, task_flags);
}
@ -2569,6 +2573,9 @@ static int nfs4_run_open_task(struct nfs4_opendata *data,
};
int status;
if (server->nfs_client->cl_minorversion)
task_setup_data.flags |= RPC_TASK_MOVEABLE;
kref_get(&data->kref);
data->rpc_done = false;
data->rpc_status = 0;
@ -3749,6 +3756,9 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
};
int status = -ENOMEM;
if (server->nfs_client->cl_minorversion)
task_setup_data.flags |= RPC_TASK_MOVEABLE;
nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP,
&task_setup_data.rpc_client, &msg);
@ -4188,6 +4198,9 @@ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
};
unsigned short task_flags = 0;
if (nfs4_has_session(server->nfs_client))
task_flags = RPC_TASK_MOVEABLE;
/* Is this is an attribute revalidation, subject to softreval? */
if (inode && (server->flags & NFS_MOUNT_SOFTREVAL))
task_flags |= RPC_TASK_TIMEOUT;
@ -4307,6 +4320,9 @@ static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
};
unsigned short task_flags = 0;
if (server->nfs_client->cl_minorversion)
task_flags = RPC_TASK_MOVEABLE;
/* Is this is an attribute revalidation, subject to softreval? */
if (nfs_lookup_is_soft_revalidate(dentry))
task_flags |= RPC_TASK_TIMEOUT;
@ -6538,7 +6554,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred,
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_delegreturn_ops,
.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT | RPC_TASK_MOVEABLE,
};
int status = 0;
@ -6856,6 +6872,11 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
struct nfs_client *client =
NFS_SERVER(lsp->ls_state->inode)->nfs_client;
if (client->cl_minorversion)
task_setup_data.flags |= RPC_TASK_MOVEABLE;
nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client,
NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg);
@ -7130,6 +7151,10 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
.flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF,
};
int ret;
struct nfs_client *client = NFS_SERVER(state->inode)->nfs_client;
if (client->cl_minorversion)
task_setup_data.flags |= RPC_TASK_MOVEABLE;
dprintk("%s: begin!\n", __func__);
data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
@ -9186,7 +9211,7 @@ static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp,
.rpc_client = clp->cl_rpcclient,
.rpc_message = &msg,
.callback_ops = &nfs41_sequence_ops,
.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT | RPC_TASK_MOVEABLE,
};
struct rpc_task *ret;
@ -9509,7 +9534,8 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout)
.rpc_message = &msg,
.callback_ops = &nfs4_layoutget_call_ops,
.callback_data = lgp,
.flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF,
.flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF |
RPC_TASK_MOVEABLE,
};
struct pnfs_layout_segment *lseg = NULL;
struct nfs4_exception exception = {
@ -9650,6 +9676,7 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync)
.rpc_message = &msg,
.callback_ops = &nfs4_layoutreturn_call_ops,
.callback_data = lrp,
.flags = RPC_TASK_MOVEABLE,
};
int status = 0;
@ -9804,6 +9831,7 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
.rpc_message = &msg,
.callback_ops = &nfs4_layoutcommit_ops,
.callback_data = data,
.flags = RPC_TASK_MOVEABLE,
};
struct rpc_task *task;
int status = 0;
@ -10131,7 +10159,7 @@ static int nfs41_free_stateid(struct nfs_server *server,
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs41_free_stateid_ops,
.flags = RPC_TASK_ASYNC,
.flags = RPC_TASK_ASYNC | RPC_TASK_MOVEABLE,
};
struct nfs_free_stateid_data *data;
struct rpc_task *task;

8
fs/nfs/pagelist.c
View file

@ -954,6 +954,7 @@ static int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc)
{
struct nfs_pgio_header *hdr;
int ret;
unsigned short task_flags = 0;
hdr = nfs_pgio_header_alloc(desc->pg_rw_ops);
if (!hdr) {
@ -962,14 +963,17 @@ static int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc)
}
nfs_pgheader_init(desc, hdr, nfs_pgio_header_free);
ret = nfs_generic_pgio(desc, hdr);
if (ret == 0)
if (ret == 0) {
if (NFS_SERVER(hdr->inode)->nfs_client->cl_minorversion)
task_flags = RPC_TASK_MOVEABLE;
ret = nfs_initiate_pgio(NFS_CLIENT(hdr->inode),
hdr,
hdr->cred,
NFS_PROTO(hdr->inode),
desc->pg_rpc_callops,
desc->pg_ioflags,
RPC_TASK_CRED_NOREF);
RPC_TASK_CRED_NOREF | task_flags);
}
return ret;
}

6
fs/nfs/write.c
View file

@ -1810,6 +1810,7 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how,
struct nfs_commit_info *cinfo)
{
struct nfs_commit_data *data;
unsigned short task_flags = 0;
/* another commit raced with us */
if (list_empty(head))
@ -1820,8 +1821,11 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how,
/* Set up the argument struct */
nfs_init_commit(data, head, NULL, cinfo);
atomic_inc(&cinfo->mds->rpcs_out);
if (NFS_SERVER(inode)->nfs_client->cl_minorversion)
task_flags = RPC_TASK_MOVEABLE;
return nfs_initiate_commit(NFS_CLIENT(inode), data, NFS_PROTO(inode),
data->mds_ops, how, RPC_TASK_CRED_NOREF);
data->mds_ops, how,
RPC_TASK_CRED_NOREF | task_flags);
}
/*

2
include/linux/sunrpc/sched.h
View file

@ -121,6 +121,7 @@ struct rpc_task_setup {
*/
#define RPC_TASK_ASYNC 0x0001 /* is an async task */
#define RPC_TASK_SWAPPER 0x0002 /* is swapping in/out */
#define RPC_TASK_MOVEABLE 0x0004 /* nfs4.1+ rpc tasks */
#define RPC_TASK_NULLCREDS 0x0010 /* Use AUTH_NULL credential */
#define RPC_CALL_MAJORSEEN 0x0020 /* major timeout seen */
#define RPC_TASK_ROOTCREDS 0x0040 /* force root creds */
@ -139,6 +140,7 @@ struct rpc_task_setup {
#define RPC_IS_SOFT(t) ((t)->tk_flags & (RPC_TASK_SOFT|RPC_TASK_TIMEOUT))
#define RPC_IS_SOFTCONN(t) ((t)->tk_flags & RPC_TASK_SOFTCONN)
#define RPC_WAS_SENT(t) ((t)->tk_flags & RPC_TASK_SENT)
#define RPC_IS_MOVEABLE(t) ((t)->tk_flags & RPC_TASK_MOVEABLE)
#define RPC_TASK_RUNNING 0
#define RPC_TASK_QUEUED 1