The patch titled
Subject: mm/page_alloc.c: extract the common part in pfn_to_bitidx()
has been added to the -mm tree. Its filename is
mm-page_allocc-extract-the-common-part-in-pfn_to_bitidx.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_allocc-extract-the-common-part-in-pfn_to_bitidx.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_allocc-extract-the-common-part-in-pfn_to_bitidx.patch
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------------------------------------------------------
From: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>
Subject: mm/page_alloc.c: extract the common part in pfn_to_bitidx()
The return value calculation is the same both for SPARSEMEM or not.
Just take it out.
Link: http://lkml.kernel.org/r/20200623124201.8199-2-richard.weiyang@xxxxxxxxxxxxxxxxx
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/page_alloc.c~mm-page_allocc-extract-the-common-part-in-pfn_to_bitidx
+++ a/mm/page_alloc.c
@@ -462,11 +462,10 @@ static inline int pfn_to_bitidx(struct p
{
#ifdef CONFIG_SPARSEMEM
pfn &= (PAGES_PER_SECTION-1);
- return (pfn >> pageblock_order) * NR_PAGEBLOCK_BITS;
#else
pfn = pfn - round_down(page_zone(page)->zone_start_pfn, pageblock_nr_pages);
- return (pfn >> pageblock_order) * NR_PAGEBLOCK_BITS;
#endif /* CONFIG_SPARSEMEM */
+ return (pfn >> pageblock_order) * NR_PAGEBLOCK_BITS;
}
/**
_
Patches currently in -mm which might be from richard.weiyang@xxxxxxxxxxxxxxxxx are
mm-page_allocc-replace-the-definition-of-nr_migratetype_bits-with-pb_migratetype_bits.patch
mm-page_allocc-extract-the-common-part-in-pfn_to_bitidx.patch
mm-page_allocc-simplify-pageblock-bitmap-access.patch
mm-page_allocc-remove-unnecessary-end_bitidx-for-_pfnblock_flags_mask.patch
