The quilt patch titled
Subject: mm/filemap: reinitialize folio->_mapcount directly
has been removed from the -mm tree. Its filename was
mm-filemap-reinitialize-folio-_mapcount-directly.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: David Hildenbrand <david@xxxxxxxxxx>
Subject: mm/filemap: reinitialize folio->_mapcount directly
Date: Wed, 29 May 2024 13:19:03 +0200
Let's get rid of the page_mapcount_reset() call and simply reinitialize
folio->_mapcount directly.
Link: https://lkml.kernel.org/r/20240529111904.2069608-6-david@xxxxxxxxxx
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Tested-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx> [zram/zsmalloc workloads]
Cc: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/filemap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/filemap.c~mm-filemap-reinitialize-folio-_mapcount-directly
+++ a/mm/filemap.c
@@ -177,7 +177,7 @@ static void filemap_unaccount_folio(stru
* and we'd rather not leak it: if we're wrong,
* another bad page check should catch it later.
*/
- page_mapcount_reset(&folio->page);
+ atomic_set(&folio->_mapcount, -1);
folio_ref_sub(folio, mapcount);
}
}
_
Patches currently in -mm which might be from david@xxxxxxxxxx are
