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authorHugh Dickins <hugh@veritas.com>2009-01-06 14:39:25 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 15:59:02 -0800
commitb5934c531849ff4a51ce0f290141efe564290e40 (patch)
tree0c741a5bd6178db11f1147875f59e7a1a9d1754d /mm/rmap.c
parent51726b1222863852c46ca21ed0115b85d1edfd89 (diff)
downloadop-kernel-dev-b5934c531849ff4a51ce0f290141efe564290e40.zip
op-kernel-dev-b5934c531849ff4a51ce0f290141efe564290e40.tar.gz
mm: add_active_or_unevictable into rmap
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 <hugh@veritas.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index f01e922..10da682 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -47,6 +47,7 @@
#include <linux/rmap.h>
#include <linux/rcupdate.h>
#include <linux/module.h>
+#include <linux/mm_inline.h>
#include <linux/kallsyms.h>
#include <linux/memcontrol.h>
#include <linux/mmu_notifier.h>
@@ -671,9 +672,13 @@ void page_add_anon_rmap(struct page *page,
void page_add_new_anon_rmap(struct page *page,
struct vm_area_struct *vma, unsigned long address)
{
- BUG_ON(address < vma->vm_start || address >= vma->vm_end);
+ VM_BUG_ON(address < vma->vm_start || address >= vma->vm_end);
atomic_set(&page->_mapcount, 0); /* elevate count by 1 (starts at -1) */
__page_set_anon_rmap(page, vma, address);
+ if (page_evictable(page, vma))
+ lru_cache_add_lru(page, LRU_ACTIVE + page_is_file_cache(page));
+ else
+ add_page_to_unevictable_list(page);
}
/**
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