> @@ -715,13 +725,7 @@ unlock:
> * restored.
> */
> list_del(&page->lru);
> - if (!page->mapping) {
> - VM_BUG_ON(page_count(page) != 1);
> - unlock_page(page);
> - put_page(page); /* just free the old page */
> - goto end_migration;
> - } else
> - unlock = putback_lru_page(page);
> + unlock = putback_lru_page(page);
> }
>
> if (unlock)
this part is really necessary?
I tryed to remove it, but any problem doesn't happend.
Of cource, another part is definitly necessary for specurative pagecache :)
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