The patch titled
Subject: mm/z3fold: remove unneeded spinlock in z3fold_alloc
has been added to the -mm mm-unstable branch. Its filename is
mm-z3fold-remove-unneeded-spinlock-in-z3fold_alloc.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-z3fold-remove-unneeded-spinlock-in-z3fold_alloc.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: Zhongkun He <hezhongkun.hzk@xxxxxxxxxxxxx>
Subject: mm/z3fold: remove unneeded spinlock in z3fold_alloc
Date: Sun, 4 Feb 2024 21:15:43 +0800
The spinlock in z3fold_alloc() is used to protect page->lru, but now it
was removed in commit e774a7bc7f0ad ("mm: zswap: remove page reclaim logic
from z3fold"), so remove the spinlock too.
Link: https://lkml.kernel.org/r/20240204131543.1469661-1-hezhongkun.hzk@xxxxxxxxxxxxx
Signed-off-by: Zhongkun He <hezhongkun.hzk@xxxxxxxxxxxxx>
Cc: Domenico Cerasuolo <cerasuolodomenico@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/z3fold.c | 2 --
1 file changed, 2 deletions(-)
--- a/mm/z3fold.c~mm-z3fold-remove-unneeded-spinlock-in-z3fold_alloc
+++ a/mm/z3fold.c
@@ -1070,9 +1070,7 @@ found:
add_to_unbuddied(pool, zhdr);
headless:
- spin_lock(&pool->lock);
*handle = encode_handle(zhdr, bud);
- spin_unlock(&pool->lock);
if (bud != HEADLESS)
z3fold_page_unlock(zhdr);
_
Patches currently in -mm which might be from hezhongkun.hzk@xxxxxxxxxxxxx are
mm-z3fold-remove-unneeded-spinlock-in-z3fold_alloc.patch
