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| author | Wei Yang <richard.weiyang@gmail.com> | 2018-06-07 17:06:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-07 17:34:35 -0700 |
| commit | e69438596bb3e97809e76be315e54a4a444f4797 (patch) | |
| tree | 307e813f11204cf50d1ac109c6dccc33f8e39ebf /mm/page_alloc.c | |
| parent | 5d752600a8c373382264392f5b573b2fc9c0e8ea (diff) | |
| download | lwn-e69438596bb3e97809e76be315e54a4a444f4797.tar.gz lwn-e69438596bb3e97809e76be315e54a4a444f4797.zip | |
mm/page_alloc: remove realsize in free_area_init_core()
Highmem's realsize always equals to freesize, so it is not necessary to
spare a variable to record this.
Link: http://lkml.kernel.org/r/20180413083859.65888-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 22320ea27489..4fbe211340e0 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6229,18 +6229,18 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat) for (j = 0; j < MAX_NR_ZONES; j++) { struct zone *zone = pgdat->node_zones + j; - unsigned long size, realsize, freesize, memmap_pages; + unsigned long size, freesize, memmap_pages; unsigned long zone_start_pfn = zone->zone_start_pfn; size = zone->spanned_pages; - realsize = freesize = zone->present_pages; + freesize = zone->present_pages; /* * Adjust freesize so that it accounts for how much memory * is used by this zone for memmap. This affects the watermark * and per-cpu initialisations */ - memmap_pages = calc_memmap_size(size, realsize); + memmap_pages = calc_memmap_size(size, freesize); if (!is_highmem_idx(j)) { if (freesize >= memmap_pages) { freesize -= memmap_pages; @@ -6272,7 +6272,7 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat) * when the bootmem allocator frees pages into the buddy system. * And all highmem pages will be managed by the buddy system. */ - zone->managed_pages = is_highmem_idx(j) ? realsize : freesize; + zone->managed_pages = freesize; #ifdef CONFIG_NUMA zone->node = nid; #endif |