linux-ext4 - [PATCH 18/20] zsmalloc: Convert to migrate

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Date:   Mon,  6 Jun 2022 21:40:48 +0100
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     linux-fsdevel@...r.kernel.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-aio@...ck.org, linux-btrfs@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        cluster-devel@...hat.com, linux-mm@...ck.org,
        linux-xfs@...r.kernel.org, linux-nfs@...r.kernel.org,
        linux-ntfs-dev@...ts.sourceforge.net, ocfs2-devel@....oracle.com,
        linux-mtd@...ts.infradead.org,
        virtualization@...ts.linux-foundation.org
Subject: [PATCH 18/20] zsmalloc: Convert to migrate_folio

zsmalloc doesn't really use folios, but it needs to be called like this
in order to migrate an individual page.  Convert from a folio back to
a page until we decide how to handle migration better for zsmalloc.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 mm/zsmalloc.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 5d5fc04385b8..8ed79121195a 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -1865,9 +1865,11 @@ static bool zs_page_isolate(struct page *page, isolate_mode_t mode)
 	return true;
 }
 
-static int zs_page_migrate(struct address_space *mapping, struct page *newpage,
-		struct page *page, enum migrate_mode mode)
+static int zs_migrate_folio(struct address_space *mapping,
+		struct folio *dst, struct folio *src, enum migrate_mode mode)
 {
+	struct page *newpage = &dst->page;
+	struct page *page = &src->page;
 	struct zs_pool *pool;
 	struct size_class *class;
 	struct zspage *zspage;
@@ -1966,7 +1968,7 @@ static void zs_page_putback(struct page *page)
 
 static const struct address_space_operations zsmalloc_aops = {
 	.isolate_page = zs_page_isolate,
-	.migratepage = zs_page_migrate,
+	.migrate_folio = zs_migrate_folio,
 	.putback_page = zs_page_putback,
 };
 
-- 
2.35.1