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NFSv4.1: layoutcommit

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The filelayout driver sends LAYOUTCOMMIT only when COMMIT goes to
the data server (as opposed to the MDS) and the data server WRITE
is not NFS_FILE_SYNC.

Only whole file layout support means that there is only one IOMODE_RW layout
segment.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com>
Signed-off-by: Fred Isaman <iisaman@citi.umich.edu>
Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn>
Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn>
Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn>
Tested-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Andy Adamson
2011-03-23 13:27:54 +00:00
committed by Trond Myklebust
parent e0c2b38018
commit 863a3c6c68
11 changed files with 387 additions and 2 deletions
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94
fs/nfs/nfs4proc.c
View File

@@ -5616,6 +5616,100 @@ int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
}
EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_layoutcommit_data *data = calldata;
struct nfs_server *server = NFS_SERVER(data->args.inode);
if (nfs4_setup_sequence(server, &data->args.seq_args,
&data->res.seq_res, 1, task))
return;
rpc_call_start(task);
}
static void
nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
{
struct nfs4_layoutcommit_data *data = calldata;
struct nfs_server *server = NFS_SERVER(data->args.inode);
if (!nfs4_sequence_done(task, &data->res.seq_res))
return;
switch (task->tk_status) { /* Just ignore these failures */
case NFS4ERR_DELEG_REVOKED: /* layout was recalled */
case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */
case NFS4ERR_BADLAYOUT: /* no layout */
case NFS4ERR_GRACE: /* loca_recalim always false */
task->tk_status = 0;
}
if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
nfs_restart_rpc(task, server->nfs_client);
return;
}
if (task->tk_status == 0)
nfs_post_op_update_inode_force_wcc(data->args.inode,
data->res.fattr);
}
static void nfs4_layoutcommit_release(void *calldata)
{
struct nfs4_layoutcommit_data *data = calldata;
/* Matched by references in pnfs_set_layoutcommit */
put_lseg(data->lseg);
put_rpccred(data->cred);
kfree(data);
}
static const struct rpc_call_ops nfs4_layoutcommit_ops = {
.rpc_call_prepare = nfs4_layoutcommit_prepare,
.rpc_call_done = nfs4_layoutcommit_done,
.rpc_release = nfs4_layoutcommit_release,
};
int
nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, int sync)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
struct rpc_task_setup task_setup_data = {
.task = &data->task,
.rpc_client = NFS_CLIENT(data->args.inode),
.rpc_message = &msg,
.callback_ops = &nfs4_layoutcommit_ops,
.callback_data = data,
.flags = RPC_TASK_ASYNC,
};
struct rpc_task *task;
int status = 0;
dprintk("NFS: %4d initiating layoutcommit call. sync %d "
"lbw: %llu inode %lu\n",
data->task.tk_pid, sync,
data->args.lastbytewritten,
data->args.inode->i_ino);
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
if (!sync)
goto out;
status = nfs4_wait_for_completion_rpc_task(task);
if (status != 0)
goto out;
status = task->tk_status;
out:
dprintk("%s: status %d\n", __func__, status);
rpc_put_task(task);
return status;
}
#endif /* CONFIG_NFS_V4_1 */
struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {