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/include/linux/rmap.h b/include/linux/rmap.h
index 616aa4d..2462458 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -190,7 +190,7 @@
int try_to_unmap(struct page *, enum ttu_flags flags);
int try_to_unmap_one(struct page *, struct vm_area_struct *,
- unsigned long address, enum ttu_flags flags);
+ unsigned long address, void *arg);
/*
* Called from mm/filemap_xip.c to unmap empty zero page
@@ -256,9 +256,6 @@
bool (*invalid_vma)(struct vm_area_struct *vma, void *arg);
};
-/*
- * Called by migrate.c to remove migration ptes, but might be used more later.
- */
int rmap_walk(struct page *page, struct rmap_walk_control *rwc);
#else /* !CONFIG_MMU */