netfs: Fix netfs_unbuffered_read() to return ssize_t rather than int

Fix netfs_unbuffered_read() to return an ssize_t rather than an int as
netfs_wait_for_read() returns ssize_t and this gets implicitly truncated.

Signed-off-by: David Howells <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Acked-by: "Paulo Alcantara (Red Hat)" <[email protected]>
cc: Jeff Layton <[email protected]>
cc: Viacheslav Dubeyko <[email protected]>
cc: Alex Markuze <[email protected]>
cc: Ilya Dryomov <[email protected]>
cc: [email protected]
cc: [email protected]
Signed-off-by: Christian Brauner <[email protected]>

Author: dhowells

fs/netfs/direct_read.c

@@ -125,9 +125,9 @@ static int netfs_dispatch_unbuffered_reads(struct netfs_io_request *rreq)
  * Perform a read to an application buffer, bypassing the pagecache and the
  * local disk cache.
  */
-static int netfs_unbuffered_read(struct netfs_io_request *rreq, bool sync)
+static ssize_t netfs_unbuffered_read(struct netfs_io_request *rreq, bool sync)
 {
-	int ret;
+	ssize_t ret;
 
 	_enter("R=%x %llx-%llx",
 	       rreq->debug_id, rreq->start, rreq->start + rreq->len - 1);
@@ -155,7 +155,7 @@ static int netfs_unbuffered_read(struct netfs_io_request *rreq, bool sync)
 	else
 		ret = -EIOCBQUEUED;
 out:
-	_leave(" = %d", ret);
+	_leave(" = %zd", ret);
 	return ret;
 }