linux-kernel - [RFC PATCH v2 08/21] mm/zsmalloc: convert obj

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Date:   Thu, 13 Jul 2023 13:20:23 +0900
From:   Hyeonggon Yoo <42.hyeyoo@...il.com>
To:     Minchan Kim <minchan@...nel.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Matthew Wilcox <willy@...radead.org>,
        Mike Rapoport <rppt@...nel.org>,
        Hyeonggon Yoo <42.hyeyoo@...il.com>
Subject: [RFC PATCH v2 08/21] mm/zsmalloc: convert obj_malloc() to use zsdesc

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@...il.com>
---
 mm/zsmalloc.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index be9762a49237..06227da86afc 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -1412,12 +1412,12 @@ EXPORT_SYMBOL_GPL(zs_huge_class_size);
 static unsigned long obj_malloc(struct zs_pool *pool,
 				struct zspage *zspage, unsigned long handle)
 {
-	int i, nr_page, offset;
+	int i, nr_zsdesc, offset;
 	unsigned long obj;
 	struct link_free *link;
 	struct size_class *class;
 
-	struct page *m_page;
+	struct zsdesc *m_zsdesc;
 	unsigned long m_offset;
 	void *vaddr;
 
@@ -1426,14 +1426,14 @@ static unsigned long obj_malloc(struct zs_pool *pool,
 	obj = get_freeobj(zspage);
 
 	offset = obj * class->size;
-	nr_page = offset >> PAGE_SHIFT;
+	nr_zsdesc = offset >> PAGE_SHIFT;
 	m_offset = offset_in_page(offset);
-	m_page = get_first_page(zspage);
+	m_zsdesc = get_first_zsdesc(zspage);
 
-	for (i = 0; i < nr_page; i++)
-		m_page = get_next_page(m_page);
+	for (i = 0; i < nr_zsdesc; i++)
+		m_zsdesc = get_next_zsdesc(m_zsdesc);
 
-	vaddr = kmap_atomic(m_page);
+	vaddr = zsdesc_kmap_atomic(m_zsdesc);
 	link = (struct link_free *)vaddr + m_offset / sizeof(*link);
 	set_freeobj(zspage, link->next >> OBJ_TAG_BITS);
 	if (likely(!ZsHugePage(zspage)))
@@ -1446,7 +1446,7 @@ static unsigned long obj_malloc(struct zs_pool *pool,
 	kunmap_atomic(vaddr);
 	mod_zspage_inuse(zspage, 1);
 
-	obj = location_to_obj(m_page, obj);
+	obj = location_to_obj(zsdesc_page(m_zsdesc), obj);
 
 	return obj;
 }
-- 
2.41.0