The patch titled
Subject: mm/swap_state.c: optimize the code in clear_shadow_from_swap_cache()
has been added to the -mm mm-unstable branch. Its filename is
mm-swap_statec-optimize-the-code-in-clear_shadow_from_swap_cache.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-swap_statec-optimize-the-code-in-clear_shadow_from_swap_cache.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: Baoquan He <bhe@xxxxxxxxxx>
Subject: mm/swap_state.c: optimize the code in clear_shadow_from_swap_cache()
Date: Wed, 5 Feb 2025 17:27:11 +0800
Use ALIGN to achieve the same effect and simplify the code.
Link: https://lkml.kernel.org/r/20250205092721.9395-3-bhe@xxxxxxxxxx
Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
Cc: Chis Li <chrisl@xxxxxxxxxx>
Cc: Kairui Song <ryncsn@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swap_state.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/mm/swap_state.c~mm-swap_statec-optimize-the-code-in-clear_shadow_from_swap_cache
+++ a/mm/swap_state.c
@@ -270,9 +270,7 @@ void clear_shadow_from_swap_cache(int ty
xa_unlock_irq(&address_space->i_pages);
/* search the next swapcache until we meet end */
- curr >>= SWAP_ADDRESS_SPACE_SHIFT;
- curr++;
- curr <<= SWAP_ADDRESS_SPACE_SHIFT;
+ curr = ALIGN((curr + 1), SWAP_ADDRESS_SPACE_PAGES);
if (curr > end)
break;
}
_
Patches currently in -mm which might be from bhe@xxxxxxxxxx are
mm-swap_statec-fix-the-obsolete-code-comment.patch
mm-swap_statec-optimize-the-code-in-clear_shadow_from_swap_cache.patch
mm-swap-remove-swap_flag_prio_shift.patch
mm-swap-skip-scanning-cluster-range-if-its-empty-cluster.patch
mm-swap-rename-swap_is_has_cache-to-swap_only_has_cache.patch
mm-swapfilec-update-the-code-comment-above-swap_count_continued.patch
mm-swapfilec-optimize-code-in-setup_clusters.patch
mm-swap_statec-remove-the-meaningless-code-comment.patch
mm-swapfilec-remove-the-unneeded-checking.patch
mm-swap-rename-swap_swapcount-to-swap_entry_swapped.patch
mm-swapfilec-remove-the-incorrect-code-comment.patch
mm-swapfilec-open-code-cluster_alloc_swap.patch
