mm/rmap: use rmap_walk() in try_to_unmap()
Now, we have an infrastructure in rmap_walk() to handle difference from
variants of rmap traversing functions.
So, just use it in try_to_unmap().
In this patch, I change following things.
1. enable rmap_walk() if !CONFIG_MIGRATION.
2. mechanical change to use rmap_walk() in try_to_unmap().
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/ksm.c b/mm/ksm.c
index 91b8cb3..6b4baa9 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1982,7 +1982,7 @@
continue;
ret = try_to_unmap_one(page, vma,
- rmap_item->address, flags);
+ rmap_item->address, (void *)flags);
if (ret != SWAP_AGAIN || !page_mapped(page)) {
anon_vma_unlock_read(anon_vma);
goto out;
@@ -1996,7 +1996,6 @@
return ret;
}
-#ifdef CONFIG_MIGRATION
int rmap_walk_ksm(struct page *page, struct rmap_walk_control *rwc)
{
struct stable_node *stable_node;
@@ -2054,6 +2053,7 @@
return ret;
}
+#ifdef CONFIG_MIGRATION
void ksm_migrate_page(struct page *newpage, struct page *oldpage)
{
struct stable_node *stable_node;