Increase limit for 'max_write' and 'max_read' almost twice, make it d…

…epend on MAX_REPLY_LEN

sshfs.c

@@ -127,6 +127,8 @@
 #define MY_EOF 1
 
 #define MAX_REPLY_LEN (1 << 17)
+#define MAX_READ_LEN (MAX_REPLY_LEN - 9)
+#define MAX_WRITE_LEN (MAX_REPLY_LEN - 16)
 
 #define RENAME_TEMP_CHARS 8
 
@@ -4338,10 +4340,10 @@ int main(int argc, char *argv[])
 
 	sshfs.randseed = time(0);
 
-	if (sshfs.max_read > 65536)
-		sshfs.max_read = 65536;
-	if (sshfs.max_write > 65536)
-		sshfs.max_write = 65536;
+	if (sshfs.max_read > MAX_READ_LEN)
+		sshfs.max_read = MAX_READ_LEN;
+	if (sshfs.max_write > MAX_WRITE_LEN)
+		sshfs.max_write = MAX_WRITE_LEN;
 
 	fsname = fsname_escape_commas(fsname);
 	tmp = g_strdup_printf("-osubtype=sshfs,fsname=%s", fsname);