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path: root/fs/nfs/blocklayout/blocklayoutdev.c
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Diffstat (limited to 'fs/nfs/blocklayout/blocklayoutdev.c')
-rw-r--r--fs/nfs/blocklayout/blocklayoutdev.c35
1 files changed, 8 insertions, 27 deletions
diff --git a/fs/nfs/blocklayout/blocklayoutdev.c b/fs/nfs/blocklayout/blocklayoutdev.c
index a83b393fb01..d08ba9107fd 100644
--- a/fs/nfs/blocklayout/blocklayoutdev.c
+++ b/fs/nfs/blocklayout/blocklayoutdev.c
@@ -79,28 +79,6 @@ int nfs4_blkdev_put(struct block_device *bdev)
return blkdev_put(bdev, FMODE_READ);
}
-/*
- * Shouldn't there be a rpc_generic_upcall() to do this for us?
- */
-ssize_t bl_pipe_upcall(struct file *filp, struct rpc_pipe_msg *msg,
- char __user *dst, size_t buflen)
-{
- char *data = (char *)msg->data + msg->copied;
- size_t mlen = min(msg->len - msg->copied, buflen);
- unsigned long left;
-
- left = copy_to_user(dst, data, mlen);
- if (left == mlen) {
- msg->errno = -EFAULT;
- return -EFAULT;
- }
-
- mlen -= left;
- msg->copied += mlen;
- msg->errno = 0;
- return mlen;
-}
-
static struct bl_dev_msg bl_mount_reply;
ssize_t bl_pipe_downcall(struct file *filp, const char __user *src,
@@ -131,7 +109,7 @@ struct pnfs_block_dev *
nfs4_blk_decode_device(struct nfs_server *server,
struct pnfs_device *dev)
{
- struct pnfs_block_dev *rv = NULL;
+ struct pnfs_block_dev *rv;
struct block_device *bd = NULL;
struct rpc_pipe_msg msg;
struct bl_msg_hdr bl_msg = {
@@ -141,7 +119,7 @@ nfs4_blk_decode_device(struct nfs_server *server,
uint8_t *dataptr;
DECLARE_WAITQUEUE(wq, current);
struct bl_dev_msg *reply = &bl_mount_reply;
- int offset, len, i;
+ int offset, len, i, rc;
dprintk("%s CREATING PIPEFS MESSAGE\n", __func__);
dprintk("%s: deviceid: %s, mincount: %d\n", __func__, dev->dev_id.data,
@@ -168,8 +146,10 @@ nfs4_blk_decode_device(struct nfs_server *server,
dprintk("%s CALLING USERSPACE DAEMON\n", __func__);
add_wait_queue(&bl_wq, &wq);
- if (rpc_queue_upcall(bl_device_pipe->d_inode, &msg) < 0) {
+ rc = rpc_queue_upcall(bl_device_pipe->d_inode, &msg);
+ if (rc < 0) {
remove_wait_queue(&bl_wq, &wq);
+ rv = ERR_PTR(rc);
goto out;
}
@@ -187,8 +167,9 @@ nfs4_blk_decode_device(struct nfs_server *server,
bd = nfs4_blkdev_get(MKDEV(reply->major, reply->minor));
if (IS_ERR(bd)) {
- dprintk("%s failed to open device : %ld\n",
- __func__, PTR_ERR(bd));
+ rc = PTR_ERR(bd);
+ dprintk("%s failed to open device : %d\n", __func__, rc);
+ rv = ERR_PTR(rc);
goto out;
}