Do not ignore error codes for linux readahead

Author: frankeh

src/io.c

@@ -2067,8 +2067,8 @@ static void
 _dispatch_operation_advise(dispatch_operation_t op, size_t chunk_size)
 {
 #ifdef __linux__
-    // radvisory and F_RDAVICE is not support, to reuse code
-    // define structure here and use readahead
+	// radvisory and F_RDAVICE is not supported
+	// to reuse code define structure here and use readahead
 	struct radvisory {
 		off_t   ra_offset;
 		int     ra_count;
@@ -2096,8 +2096,6 @@ _dispatch_operation_advise(dispatch_operation_t op, size_t chunk_size)
 #ifdef __linux__
 	_dispatch_io_syscall_switch(err,
 		readahead(op->fd_entry->fd, advise.ra_offset, advise.ra_count),
-		case EBADF: break; // bad file desciptor
-		case EINVAL: break; // wrong file type to apply
 		default: (void)dispatch_assume_zero(err); break;
 	);
 #else