[PATCH v4 13/22] mm/zsmalloc: convert location_to_obj() to take zpdesc

alexs
2024-07-29T11:21:00Z

From: Hyeonggon Yoo <42.hyeyoo@gmail.com>

As all users of location_to_obj() now use zpdesc, convert
location_to_obj() to take zpdesc.

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Alex Shi <alexs@kernel.org>
---
mm/zsmalloc.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 68fdea7b6e0d..e291c7319485 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -826,15 +826,15 @@ static void obj_to_zpdesc(unsigned long obj, struct zpdesc **zpdesc)
}

/**
- * location_to_obj - get obj value encoded from (<page>, <obj_idx>)
- * @page: page object resides in zspage
+ * location_to_obj - get obj value encoded from (<zpdesc>, <obj_idx>)
+ * @zpdesc: zpdesc object resides in zspage
* @obj_idx: object index
*/
-static unsigned long location_to_obj(struct page *page, unsigned int obj_idx)
+static unsigned long location_to_obj(struct zpdesc *zpdesc, unsigned int obj_idx)
{
unsigned long obj;

- obj = page_to_pfn(page) << OBJ_INDEX_BITS;
+ obj = zpdesc_pfn(zpdesc) << OBJ_INDEX_BITS;
obj |= obj_idx & OBJ_INDEX_MASK;

return obj;
@@ -1392,7 +1392,7 @@ static unsigned long obj_malloc(struct zs_pool *pool,
kunmap_atomic(vaddr);
mod_zspage_inuse(zspage, 1);

- obj = location_to_obj(zpdesc_page(m_zpdesc), obj);
+ obj = location_to_obj(m_zpdesc, obj);
record_obj(handle, obj);

return obj;
@@ -1879,8 +1879,7 @@ static int zs_page_migrate(struct page *newpage, struct page *page,

old_obj = handle_to_obj(handle);
obj_to_location(old_obj, &dummy, &obj_idx);
- new_obj = (unsigned long)location_to_obj(zpdesc_page(newzpdesc),
- obj_idx);
+ new_obj = (unsigned long)location_to_obj(newzpdesc, obj_idx);
record_obj(handle, new_obj);
}
}
--
2.43.0