The patch titled
Subject: mm/vmscan: simplify the nr assignment logic for pages to scan
has been added to the -mm mm-unstable branch. Its filename is
mm-vmscan-simplify-the-nr-assignment-logic-for-pages-to-scan.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-vmscan-simplify-the-nr-assignment-logic-for-pages-to-scan.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: Chao Xu <amos.xuchao@xxxxxxxxx>
Subject: mm/vmscan: simplify the nr assignment logic for pages to scan
Date: Thu, 10 Nov 2022 19:31:30 +0800
By default the assignment logic of anonymouns or file inactive pages and
active pages to scan using the same duplicated code snippet. To simplify
the logic, merge the same part.
Link: https://lkml.kernel.org/r/20221110113130.284290-1-Chao.Xu9@xxxxxxxxxxxxx
Signed-off-by: Chao Xu <Chao.Xu9@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
--- a/mm/vmscan.c~mm-vmscan-simplify-the-nr-assignment-logic-for-pages-to-scan
+++ a/mm/vmscan.c
@@ -5950,14 +5950,11 @@ static void shrink_lruvec(struct lruvec
* scan target and the percentage scanning already complete
*/
lru = (lru == LRU_FILE) ? LRU_BASE : LRU_FILE;
- nr_scanned = targets[lru] - nr[lru];
- nr[lru] = targets[lru] * (100 - percentage) / 100;
- nr[lru] -= min(nr[lru], nr_scanned);
-
- lru += LRU_ACTIVE;
- nr_scanned = targets[lru] - nr[lru];
- nr[lru] = targets[lru] * (100 - percentage) / 100;
- nr[lru] -= min(nr[lru], nr_scanned);
+ for ( ; lru <= lru + LRU_ACTIVE; lru += LRU_ACTIVE) {
+ nr_scanned = targets[lru] - nr[lru];
+ nr[lru] = targets[lru] * (100 - percentage) / 100;
+ nr[lru] -= min(nr[lru], nr_scanned);
+ }
scan_adjusted = true;
}
_
Patches currently in -mm which might be from amos.xuchao@xxxxxxxxx are
mm-vmscan-simplify-the-nr-assignment-logic-for-pages-to-scan.patch
