__inc_zone_page_state(newpage, NR_FILE_PAGES);
spin_unlock_irq(&mapping->tree_lock);
- if (!PageSwapCache(newpage))
- mem_cgroup_uncharge_cache_page(page);
return 0;
}
*/
static void migrate_page_copy(struct page *newpage, struct page *page)
{
+ int anon;
+
copy_highpage(newpage, page);
if (PageError(page))
#endif
ClearPagePrivate(page);
set_page_private(page, 0);
+ /* page->mapping contains a flag for PageAnon() */
+ anon = PageAnon(page);
page->mapping = NULL;
+ if (!anon) /* This page was removed from radix-tree. */
+ mem_cgroup_uncharge_cache_page(page);
+
/*
* If any waiters have accumulated on the new page then
* wake them up.
remove_migration_ptes(page, page);
rc = mapping->a_ops->writepage(page, &wbc);
- if (rc < 0)
- /* I/O Error writing */
- return -EIO;
if (rc != AOP_WRITEPAGE_ACTIVATE)
/* unlocked. Relock */
lock_page(page);
- return -EAGAIN;
+ return (rc < 0) ? -EIO : -EAGAIN;
}
/*
struct page_to_node *pp;
LIST_HEAD(pagelist);
+ migrate_prep();
down_read(&mm->mmap_sem);
/*
* Build a list of pages to migrate
*/
- migrate_prep();
for (pp = pm; pp->node != MAX_NUMNODES; pp++) {
struct vm_area_struct *vma;
struct page *page;