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mm: add_active_or_unevictable into rmap

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lru_cache_add_active_or_unevictable() and page_add_new_anon_rmap() always
appear together.  Save some symbol table space and some jumping around by
removing lru_cache_add_active_or_unevictable(), folding its code into
page_add_new_anon_rmap(): like how we add file pages to lru just after
adding them to page cache.

Remove the nearby "TODO: is this safe?" comments (yes, it is safe), and
change page_add_new_anon_rmap()'s address BUG_ON to VM_BUG_ON as
originally intended.

Signed-off-by: Hugh Dickins <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Cc: Lee Schermerhorn <[email protected]>
Cc: Nick Piggin <[email protected]>
Cc: Mel Gorman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Hugh Dickins 2009-01-06 14:39:25 -08:00 • committed by Linus Torvalds
commit b5934c5318
4 changed files with 6 additions and 28 deletions
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19
mm/swap.c
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@ -246,25 +246,6 @@ void add_page_to_unevictable_list(struct page *page)
spin_unlock_irq(&zone->lru_lock);
}
/**
* lru_cache_add_active_or_unevictable
* @page: the page to be added to LRU
* @vma: vma in which page is mapped for determining reclaimability
*
* place @page on active or unevictable LRU list, depending on
* page_evictable(). Note that if the page is not evictable,
* it goes directly back onto it's zone's unevictable list. It does
* NOT use a per cpu pagevec.
*/
void lru_cache_add_active_or_unevictable(struct page *page,
struct vm_area_struct *vma)
{
if (page_evictable(page, vma))
lru_cache_add_lru(page, LRU_ACTIVE + page_is_file_cache(page));
else
add_page_to_unevictable_list(page);
}
/*
* Drain pages out of the cpu's pagevecs.
* Either "cpu" is the current CPU, and preemption has already been