The patch titled
Subject: mm/compaction: merge end_pfn boundary check in isolate_freepages_range
has been added to the -mm mm-unstable branch. Its filename is
mm-compaction-merge-end_pfn-boundary-check-in-isolate_freepages_range.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-compaction-merge-end_pfn-boundary-check-in-isolate_freepages_range.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: Kemeng Shi <shikemeng@xxxxxxxxxx>
Subject: mm/compaction: merge end_pfn boundary check in isolate_freepages_range
Date: Sun, 30 Jul 2023 01:43:52 +0800
Merge the end_pfn boundary check for single page block forward and
multiple page blocks forward to avoid do twice boundary check for multiple
page blocks forward.
Link: https://lkml.kernel.org/r/20230729174354.2239980-4-shikemeng@xxxxxxxxxxxxxxx
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Cc: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/mm/compaction.c~mm-compaction-merge-end_pfn-boundary-check-in-isolate_freepages_range
+++ a/mm/compaction.c
@@ -737,8 +737,6 @@ isolate_freepages_range(struct compact_c
/* Protect pfn from changing by isolate_freepages_block */
unsigned long isolate_start_pfn = pfn;
- block_end_pfn = min(block_end_pfn, end_pfn);
-
/*
* pfn could pass the block_end_pfn if isolated freepage
* is more than pageblock order. In this case, we adjust
@@ -747,9 +745,10 @@ isolate_freepages_range(struct compact_c
if (pfn >= block_end_pfn) {
block_start_pfn = pageblock_start_pfn(pfn);
block_end_pfn = pageblock_end_pfn(pfn);
- block_end_pfn = min(block_end_pfn, end_pfn);
}
+ block_end_pfn = min(block_end_pfn, end_pfn);
+
if (!pageblock_pfn_to_page(block_start_pfn,
block_end_pfn, cc->zone))
break;
_
Patches currently in -mm which might be from shikemeng@xxxxxxxxxx are
mm-compaction-correct-comment-of-candidate-pfn-in-fast_isolate_freepages.patch
mm-compaction-avoid-unneeded-pageblock_end_pfn-when-no_set_skip_hint-is-set.patch
mm-compaction-merge-end_pfn-boundary-check-in-isolate_freepages_range.patch
