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    SubjectRe: WARNING: at mm/page-writeback.c:1990 __set_page_dirty_nobuffers+0x13a/0x170()
    >   	mlock_migrate_page(newpage, page);
    > --- 3.4.0+/mm/page-writeback.c 2012-05-29 08:09:58.304806782 -0700
    > +++ linux/mm/page-writeback.c 2012-06-01 00:23:43.984116973 -0700
    > @@ -1987,7 +1987,10 @@ int __set_page_dirty_nobuffers(struct pa
    > mapping2 = page_mapping(page);
    > if (mapping2) { /* Race with truncate? */
    > BUG_ON(mapping2 != mapping);
    > - WARN_ON_ONCE(!PagePrivate(page)&& !PageUptodate(page));
    > + if (WARN_ON(!PagePrivate(page)&& !PageUptodate(page)))
    > + print_symbol(KERN_WARNING
    > + "mapping->a_ops->writepage: %s\n",
    > + (unsigned long)mapping->a_ops->writepage);

    type mismatch? I guess you want %pf or %pF.




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