#include <linux/backing-dev.h>
#include <linux/pagevec.h>
#include <linux/migrate.h>
-#include <linux/memcontrol.h>
#include <asm/pgtable.h>
BUG_ON(PagePrivate(page));
error = radix_tree_preload(gfp_mask);
if (!error) {
-
- error = mem_cgroup_cache_charge(page, current->mm, gfp_mask);
- if (error)
- goto out;
-
write_lock_irq(&swapper_space.tree_lock);
error = radix_tree_insert(&swapper_space.page_tree,
entry.val, page);
total_swapcache_pages++;
__inc_zone_page_state(page, NR_FILE_PAGES);
INC_CACHE_INFO(add_total);
- } else {
- mem_cgroup_uncharge_page(page);
}
write_unlock_irq(&swapper_space.tree_lock);
radix_tree_preload_end();
}
-out:
return error;
}
BUG_ON(PageWriteback(page));
BUG_ON(PagePrivate(page));
- mem_cgroup_uncharge_page(page);
radix_tree_delete(&swapper_space.page_tree, page_private(page));
set_page_private(page, 0);
ClearPageSwapCache(page);
/**
* add_to_swap - allocate swap space for a page
* @page: page we want to move to swap
+ * @gfp_mask: memory allocation flags
*
* Allocate swap space for the page and add the page to the
* swap cache. Caller needs to hold the page lock.
/**
* swapin_readahead - swap in pages in hope we need them soon
* @entry: swap entry of this memory
+ * @gfp_mask: memory allocation flags
* @vma: user vma this address belongs to
* @addr: target address for mempolicy
*