The quilt patch titled
Subject: mm/page_ext: add common function to get client data from page_ext
has been removed from the -mm tree. Its filename was
mm-page_ext-add-common-function-to-get-client-data-from-page_ext.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Subject: mm/page_ext: add common function to get client data from page_ext
Date: Tue, 18 Jul 2023 22:58:10 +0800
Patch series "add page_ext_data to get client data in page_ext".
Current clients get data from page_ext by adding offset which is auto
generated in page_ext core and exposes the data layout design inside
page_ext core. This series adds a page_ext_data() to hide this from
clients.
Benefits include:
1. Future clients can call page_ext_data directly instead of defining
a new function like get_page_owner to get the data.
2. There is no change to clients if the layout of page_ext data changes.
This patch (of 3):
Add common page_ext_data function to get client data. This could hide
offset which is auto generated in page_ext core and expose the desgin of
page_ext data layout.
Link: https://lkml.kernel.org/r/20230718145812.1991717-1-shikemeng@xxxxxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20230718145812.1991717-2-shikemeng@xxxxxxxxxxxxxxx
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxx>
Acked-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/page_ext.h | 6 ++++++
1 file changed, 6 insertions(+)
--- a/include/linux/page_ext.h~mm-page_ext-add-common-function-to-get-client-data-from-page_ext
+++ a/include/linux/page_ext.h
@@ -82,6 +82,12 @@ static inline void page_ext_init(void)
extern struct page_ext *page_ext_get(struct page *page);
extern void page_ext_put(struct page_ext *page_ext);
+static inline void *page_ext_data(struct page_ext *page_ext,
+ struct page_ext_operations *ops)
+{
+ return (void *)(page_ext) + ops->offset;
+}
+
static inline struct page_ext *page_ext_next(struct page_ext *curr)
{
void *next = curr;
_
Patches currently in -mm which might be from shikemeng@xxxxxxxxxxxxxxx are
