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authorOlga Kornievskaia <kolga@netapp.com>2018-07-09 15:13:34 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2018-08-09 12:56:39 -0400
commitc975c20926575e5968c617ec437647b2f9d87532 (patch)
tree1184d85aa011b09a3b2a6c33e6e6b4d43386cafb /fs
parent0f913a57d74ddae9f168c59d4003f3fd3e293669 (diff)
downloadlinux-c975c20926575e5968c617ec437647b2f9d87532.tar.bz2
NFS send OFFLOAD_CANCEL when COPY killed
When COPY is killed by the user send OFFLOAD_CANCEL to server processing the copy. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/nfs42proc.c91
1 files changed, 90 insertions, 1 deletions
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index c7d31f72070e..aeb9837b7e40 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -17,6 +17,7 @@
#include "internal.h"
#define NFSDBG_FACILITY NFSDBG_PROC
+static int nfs42_do_offload_cancel_async(struct file *dst, nfs4_stateid *std);
static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
struct nfs_lock_context *lock, loff_t offset, loff_t len)
@@ -166,10 +167,15 @@ static int handle_async_copy(struct nfs42_copy_res *res,
list_add_tail(&copy->copies, &server->ss_copies);
spin_unlock(&server->nfs_client->cl_lock);
- wait_for_completion_interruptible(&copy->completion);
+ status = wait_for_completion_interruptible(&copy->completion);
spin_lock(&server->nfs_client->cl_lock);
list_del_init(&copy->copies);
spin_unlock(&server->nfs_client->cl_lock);
+ if (status == -ERESTARTSYS) {
+ nfs42_do_offload_cancel_async(dst, &copy->stateid);
+ kfree(copy);
+ return status;
+ }
out:
res->write_res.count = copy->count;
memcpy(&res->write_res.verifier, &copy->verf, sizeof(copy->verf));
@@ -327,6 +333,89 @@ out_put_src_lock:
return err;
}
+struct nfs42_offloadcancel_data {
+ struct nfs_server *seq_server;
+ struct nfs42_offload_status_args args;
+ struct nfs42_offload_status_res res;
+};
+
+static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata)
+{
+ struct nfs42_offloadcancel_data *data = calldata;
+
+ nfs4_setup_sequence(data->seq_server->nfs_client,
+ &data->args.osa_seq_args,
+ &data->res.osr_seq_res, task);
+}
+
+static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
+{
+ struct nfs42_offloadcancel_data *data = calldata;
+
+ nfs41_sequence_done(task, &data->res.osr_seq_res);
+ if (task->tk_status &&
+ nfs4_async_handle_error(task, data->seq_server, NULL,
+ NULL) == -EAGAIN)
+ rpc_restart_call_prepare(task);
+}
+
+static void nfs42_free_offloadcancel_data(void *data)
+{
+ kfree(data);
+}
+
+static const struct rpc_call_ops nfs42_offload_cancel_ops = {
+ .rpc_call_prepare = nfs42_offload_cancel_prepare,
+ .rpc_call_done = nfs42_offload_cancel_done,
+ .rpc_release = nfs42_free_offloadcancel_data,
+};
+
+static int nfs42_do_offload_cancel_async(struct file *dst,
+ nfs4_stateid *stateid)
+{
+ struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
+ struct nfs42_offloadcancel_data *data = NULL;
+ struct nfs_open_context *ctx = nfs_file_open_context(dst);
+ struct rpc_task *task;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL],
+ .rpc_cred = ctx->cred,
+ };
+ struct rpc_task_setup task_setup_data = {
+ .rpc_client = dst_server->client,
+ .rpc_message = &msg,
+ .callback_ops = &nfs42_offload_cancel_ops,
+ .workqueue = nfsiod_workqueue,
+ .flags = RPC_TASK_ASYNC,
+ };
+ int status;
+
+ if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL))
+ return -EOPNOTSUPP;
+
+ data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS);
+ if (data == NULL)
+ return -ENOMEM;
+
+ data->seq_server = dst_server;
+ data->args.osa_src_fh = NFS_FH(file_inode(dst));
+ memcpy(&data->args.osa_stateid, stateid,
+ sizeof(data->args.osa_stateid));
+ msg.rpc_argp = &data->args;
+ msg.rpc_resp = &data->res;
+ task_setup_data.callback_data = data;
+ nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res,
+ 1, 0);
+ task = rpc_run_task(&task_setup_data);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
+ status = rpc_wait_for_completion_task(task);
+ if (status == -ENOTSUPP)
+ dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL;
+ rpc_put_task(task);
+ return status;
+}
+
static loff_t _nfs42_proc_llseek(struct file *filep,
struct nfs_lock_context *lock, loff_t offset, int whence)
{