commit dc386d4d1e98bb39fb967ee156cd456c802fc692 adds rcu_read_lock, but some routines in the lock range might sleep (like lock_buffer, aops->writepage), I saw a 'sleep in atomic' warning. It appears the patch has several versions before. Doing rcu_read_lock in PageAnon sounds break the case of PageAnon(page) && PageSwapCache(page), as .writepage might be called. The dummy anon patch maybe is ok.
Thanks, Shaohua - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
