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| author | Wei Yang <richard.weiyang@gmail.com> | 2018-05-26 14:15:16 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2018-05-26 14:29:04 +1000 |
| commit | 511c20af4edab6b81eaad31f9d7922d3fa3edeaf (patch) | |
| tree | 49030ef6c11eeeefbc868d04968be86b3c10fdd3 | |
| parent | bc1388666c44a58d868df64c84f37613345dc734 (diff) | |
| download | linux-next-511c20af4edab6b81eaad31f9d7922d3fa3edeaf.tar.gz | |
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: Stephen Rothwell <sfr@canb.auug.org.au>
| -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 |