very small nit
> There were minor changes in how the rcu_read_lock is taken and released
> based on other comments. With your suggestion, the block now looks like;
>
> if (PageAnon(page)) {
> rcu_read_lock();
> rcu_locked = 1;
>
> /*
> * If the page has no mappings any more, just bail. An
> * unmapped anon page is likely to be freed soon but
> * worse,
> * it's possible its anon_vma disappeared between when
> * the page was isolated and when we reached here while
> * the RCU lock was not held
> */
> if (!page_mapcount(page) && !PageSwapCache(page))
page_mapped?
> goto rcu_unlock;
>
> anon_vma = page_anon_vma(page);
> atomic_inc(&anon_vma->external_refcount);
> }
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxxx For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>