[RFC PATCH 05/25] mm/zsmalloc: convert {try,}lock_zspage() to use zsdesc

[Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>]

Convert trylock_zspage() and lock_zspage() to use zsdesc.

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
---
 mm/zsmalloc.c | 40 ++++++++++++++++++++--------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 1ee9cfae282b..dc6a7130cdfd 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -1091,11 +1091,11 @@ static void reset_page(struct page *page)
 
 static int trylock_zspage(struct zspage *zspage)
 {
-	struct page *cursor, *fail;
+	struct zsdesc *cursor, *fail;
 
-	for (cursor = get_first_page(zspage); cursor != NULL; cursor =
-					get_next_page(cursor)) {
-		if (!trylock_page(cursor)) {
+	for (cursor = get_first_zsdesc(zspage); cursor != NULL; cursor =
+					get_next_zsdesc(cursor)) {
+		if (!trylock_zsdesc(cursor)) {
 			fail = cursor;
 			goto unlock;
 		}
@@ -1103,9 +1103,9 @@ static int trylock_zspage(struct zspage *zspage)
 
 	return 1;
 unlock:
-	for (cursor = get_first_page(zspage); cursor != fail; cursor =
-					get_next_page(cursor))
-		unlock_page(cursor);
+	for (cursor = get_first_zsdesc(zspage); cursor != fail; cursor =
+					get_next_zsdesc(cursor))
+		unlock_zsdesc(cursor);
 
 	return 0;
 }
@@ -2056,7 +2056,7 @@ static enum fullness_group putback_zspage(struct size_class *class,
  */
 static void lock_zspage(struct zspage *zspage)
 {
-	struct page *curr_page, *page;
+	struct zsdesc *curr_zsdesc, *zsdesc;
 
 	/*
 	 * Pages we haven't locked yet can be migrated off the list while we're
@@ -2068,24 +2068,24 @@ static void lock_zspage(struct zspage *zspage)
 	 */
 	while (1) {
 		migrate_read_lock(zspage);
-		page = get_first_page(zspage);
-		if (trylock_page(page))
+		zsdesc = get_first_zsdesc(zspage);
+		if (trylock_zsdesc(zsdesc))
 			break;
-		get_page(page);
+		zsdesc_get(zsdesc);
 		migrate_read_unlock(zspage);
-		wait_on_page_locked(page);
-		put_page(page);
+		wait_on_zsdesc_locked(zsdesc);
+		zsdesc_put(zsdesc);
 	}
 
-	curr_page = page;
-	while ((page = get_next_page(curr_page))) {
-		if (trylock_page(page)) {
-			curr_page = page;
+	curr_zsdesc = zsdesc;
+	while ((zsdesc = get_next_zsdesc(curr_zsdesc))) {
+		if (trylock_zsdesc(zsdesc)) {
+			curr_zsdesc = zsdesc;
 		} else {
-			get_page(page);
+			zsdesc_get(zsdesc);
 			migrate_read_unlock(zspage);
-			wait_on_page_locked(page);
-			put_page(page);
+			wait_on_zsdesc_locked(zsdesc);
+			zsdesc_put(zsdesc);
 			migrate_read_lock(zspage);
 		}
 	}
-- 
2.25.1