| From: Zhongkun He <hezhongkun.hzk@bytedance.com> |
| 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@bytedance.com |
| Signed-off-by: Zhongkun He <hezhongkun.hzk@bytedance.com> |
| Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com> |
| Cc: Johannes Weiner <hannes@cmpxchg.org> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| 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); |
| |
| _ |
