NFS: Ensure that rpc_run_task() errors are propagated back to the caller

[linux-2.6-omap-h63xx.git] / fs / nfs / write.c

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 31681bb5e4c1031ab8da3968dcd0f1ad3d3d7655..1ade11d1ba078c922e8dc24b0d2d98eec022d09f 100644 (file)
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -778,7 +778,7 @@ static int flush_task_priority(int how)
 /*
  * Set up the argument/result storage required for the RPC call.
  */
-static void nfs_write_rpcsetup(struct nfs_page *req,
+static int nfs_write_rpcsetup(struct nfs_page *req,
                struct nfs_write_data *data,
                const struct rpc_call_ops *call_ops,
                unsigned int count, unsigned int offset,
@@ -841,8 +841,10 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
                (unsigned long long)data->args.offset);
 
        task = rpc_run_task(&task_setup_data);
-       if (!IS_ERR(task))
-               rpc_put_task(task);
+       if (IS_ERR(task))
+               return PTR_ERR(task);
+       rpc_put_task(task);
+       return 0;
 }
 
 /* If a nfs_flush_* function fails, it should remove reqs from @head and
@@ -868,6 +870,7 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
        size_t wsize = NFS_SERVER(inode)->wsize, nbytes;
        unsigned int offset;
        int requests = 0;
+       int ret = 0;
        LIST_HEAD(list);
 
        nfs_list_remove_request(req);
@@ -889,6 +892,8 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
        offset = 0;
        nbytes = count;
        do {
+               int ret2;
+
                data = list_entry(list.next, struct nfs_write_data, pages);
                list_del_init(&data->pages);
 
@@ -896,13 +901,15 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
 
                if (nbytes < wsize)
                        wsize = nbytes;
-               nfs_write_rpcsetup(req, data, &nfs_write_partial_ops,
+               ret2 = nfs_write_rpcsetup(req, data, &nfs_write_partial_ops,
                                   wsize, offset, how);
+               if (ret == 0)
+                       ret = ret2;
                offset += wsize;
                nbytes -= wsize;
        } while (nbytes != 0);
 
-       return 0;
+       return ret;
 
 out_bad:
        while (!list_empty(&list)) {
@@ -943,9 +950,7 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i
        req = nfs_list_entry(data->pages.next);
 
        /* Set up the argument struct */
-       nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, how);
-
-       return 0;
+       return nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, how);
  out_bad:
        while (!list_empty(head)) {
                req = nfs_list_entry(head->next);
@@ -1183,7 +1188,7 @@ void nfs_commitdata_release(void *data)
 /*
  * Set up the argument/result storage required for the RPC call.
  */
-static void nfs_commit_rpcsetup(struct list_head *head,
+static int nfs_commit_rpcsetup(struct list_head *head,
                struct nfs_write_data *data,
                int how)
 {
@@ -1232,8 +1237,10 @@ static void nfs_commit_rpcsetup(struct list_head *head,
        dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
 
        task = rpc_run_task(&task_setup_data);
-       if (!IS_ERR(task))
-               rpc_put_task(task);
+       if (IS_ERR(task))
+               return PTR_ERR(task);
+       rpc_put_task(task);
+       return 0;
 }
 
 /*
@@ -1251,9 +1258,7 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
                goto out_bad;
 
        /* Set up the argument struct */
-       nfs_commit_rpcsetup(head, data, how);
-
-       return 0;
+       return nfs_commit_rpcsetup(head, data, how);
  out_bad:
        while (!list_empty(head)) {
                req = nfs_list_entry(head->next);