+ mm-damon-paddr-fix-missing-folio_sz-update-in-damon_pa_young.patch added to mm-unstable branch

+ mm-damon-paddr-fix-missing-folio_sz-update-in-damon_pa_young.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/damon/paddr: fix missing folio_sz update in damon_pa_young()
has been added to the -mm mm-unstable branch.  Its filename is
     mm-damon-paddr-fix-missing-folio_sz-update-in-damon_pa_young.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-paddr-fix-missing-folio_sz-update-in-damon_pa_young.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: mm/damon/paddr: fix missing folio_sz update in damon_pa_young()
Date: Wed, 8 Mar 2023 16:33:11 +0800

The *folio_sz in damon_pa_young() will be used(as last_folio_sz) by
__damon_pa_check_access(), so it's need to be updated, fix missing branch.

Link: https://lkml.kernel.org/r/20230308083311.120951-4-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/mm/damon/paddr.c~mm-damon-paddr-fix-missing-folio_sz-update-in-damon_pa_young
+++ a/mm/damon/paddr.c
@@ -134,10 +134,8 @@ static bool damon_pa_young(unsigned long
 	}
 
 	need_lock = !folio_test_anon(folio) || folio_test_ksm(folio);
-	if (need_lock && !folio_trylock(folio)) {
-		folio_put(folio);
-		return false;
-	}
+	if (need_lock && !folio_trylock(folio))
+		goto out;
 
 	rmap_walk(folio, &rwc);
 
_

Patches currently in -mm which might be from wangkefeng.wang@huawei.com are

mm-huge_memory-convert-__do_huge_pmd_anonymous_page-to-use-a-folio.patch
mm-memory-use-folio_throttle_swaprate-in-do_swap_page.patch
mm-memory-use-folio_throttle_swaprate-in-page_copy_prealloc.patch
mm-memory-use-folio_throttle_swaprate-in-wp_page_copy.patch
mm-memory-use-folio_throttle_swaprate-in-do_anonymous_page.patch
mm-memory-use-folio_throttle_swaprate-in-do_cow_fault.patch
mm-swap-remove-unneeded-cgroup_throttle_swaprate.patch
mm-damon-paddr-minor-refactor-of-damon_pa_pageout.patch
mm-damon-paddr-minor-refactor-of-damon_pa_mark_accessed_or_deactivate.patch
mm-damon-paddr-fix-missing-folio_sz-update-in-damon_pa_young.patch