+ mm-compaction-merge-end_pfn-boundary-check-in-isolate_freepages_range.patch added to mm-unstable branch

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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




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