>>>>> Andrew Morton (AM) writes: AM> What lock protects the fields in struct ext[234]_reserve_window from being AM> concurrently modified by two CPUs? None, it seems. Ditto AM> ext[234]_reserve_window_node. i_mutex will cover it for write(), but not AM> for pageout over a file hole. If we end up with a zero- or negative-sized AM> window then odd things might happen. truncate_mutex? thanks, Alex - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
