The patch titled
Subject: zsmalloc-fix-races-between-modifications-of-fullness-and-isolated-v2
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
zsmalloc-fix-races-between-modifications-of-fullness-and-isolated-v2.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zsmalloc-fix-races-between-modifications-of-fullness-and-isolated-v2.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Andrew Yang <andrew.yang@xxxxxxxxxxxx>
Subject: zsmalloc-fix-races-between-modifications-of-fullness-and-isolated-v2
Date: Thu, 27 Jul 2023 14:29:07 +0800
move comment
Link: https://lkml.kernel.org/r/20230727062910.6337-1-andrew.yang@xxxxxxxxxxxx
Signed-off-by: Andrew Yang <andrew.yang@xxxxxxxxxxxx>
Fixes: c4549b871102 ("zsmalloc: remove zspage isolation for migration")
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Cc: Matthias Brugger <matthias.bgg@xxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Cc: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zsmalloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/zsmalloc.c~zsmalloc-fix-races-between-modifications-of-fullness-and-isolated-v2
+++ a/mm/zsmalloc.c
@@ -1877,11 +1877,11 @@ static int zs_page_migrate(struct page *
kunmap_atomic(s_addr);
replace_sub_page(class, zspage, newpage, page);
+ dec_zspage_isolation(zspage);
/*
* Since we complete the data copy and set up new zspage structure,
* it's okay to release the pool's lock.
*/
- dec_zspage_isolation(zspage);
spin_unlock(&pool->lock);
migrate_write_unlock(zspage);
_
Patches currently in -mm which might be from andrew.yang@xxxxxxxxxxxx are
zsmalloc-fix-races-between-modifications-of-fullness-and-isolated.patch
zsmalloc-fix-races-between-modifications-of-fullness-and-isolated-v2.patch
fs-drop_caches-draining-pages-before-dropping-caches.patch
