NFSv4.1: Pin the inode and super block in asynchronous layoutcommit
If we're sending an asynchronous layoutcommit, then we need to ensure
that the inode and the super block remain pinned.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Reviewed-by: Peng Tao <tao.peng@primarydata.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index dd892a4..e092b85 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -7989,6 +7989,7 @@
nfs_post_op_update_inode_force_wcc(data->args.inode,
data->res.fattr);
put_rpccred(data->cred);
+ nfs_iput_and_deactive(data->inode);
kfree(data);
}
@@ -8013,7 +8014,6 @@
.rpc_message = &msg,
.callback_ops = &nfs4_layoutcommit_ops,
.callback_data = data,
- .flags = RPC_TASK_ASYNC,
};
struct rpc_task *task;
int status = 0;
@@ -8024,18 +8024,21 @@
data->args.lastbytewritten,
data->args.inode->i_ino);
+ if (!sync) {
+ data->inode = nfs_igrab_and_active(data->args.inode);
+ if (data->inode == NULL) {
+ nfs4_layoutcommit_release(data);
+ return -EAGAIN;
+ }
+ task_setup_data.flags = RPC_TASK_ASYNC;
+ }
nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
- if (sync == false)
- goto out;
- status = nfs4_wait_for_completion_rpc_task(task);
- if (status != 0)
- goto out;
- status = task->tk_status;
+ if (sync)
+ status = task->tk_status;
trace_nfs4_layoutcommit(data->args.inode, status);
-out:
dprintk("%s: status %d\n", __func__, status);
rpc_put_task(task);
return status;