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| author | Wei Yang <richard.weiyang@linux.alibaba.com> | 2020-08-07 08:25:44 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-07 20:33:29 +0200 |
| commit | 399b795b7a80bf703aae56fa0b66fd1949ca1fd9 (patch) | |
| tree | f74f6ecb60872f96763ca59324c3f074ed0d0531 /mm/page_alloc.c | |
| parent | mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migrat... (diff) | |
| download | linux-399b795b7a80bf703aae56fa0b66fd1949ca1fd9.tar.xz linux-399b795b7a80bf703aae56fa0b66fd1949ca1fd9.zip | |
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.
Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Link: http://lkml.kernel.org/r/20200623124201.8199-2-richard.weiyang@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/page_alloc.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index ba09a3aeb76b..6c524fb76b31 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -459,11 +459,10 @@ static inline int pfn_to_bitidx(struct page *page, unsigned long pfn) { #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; } /** |