Messages in this thread Patch in this message | | | From | Kemeng Shi <> | Subject | [PATCH v2 2/4] mm/compaction: merge end_pfn boundary check in isolate_freepages_range | Date | Thu, 3 Aug 2023 17:48:59 +0800 |
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From: Kemeng Shi <shikemeng@huawei.com>
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.
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> --- mm/compaction.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/mm/compaction.c b/mm/compaction.c index 61f56cee3715..b7a05b9843ed 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -735,8 +735,6 @@ isolate_freepages_range(struct compact_control *cc, /* 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 @@ -745,9 +743,10 @@ isolate_freepages_range(struct compact_control *cc, 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; -- 2.30.0
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