diff options
| author | Wei Yang <richard.weiyang@gmail.com> | 2025-02-12 01:38:18 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-03-16 22:06:14 -0700 |
| commit | bf40aa214195864eeb63165cfb02e959c464d409 (patch) | |
| tree | 271cd6115d130c52e5f0fbbde8a58b4b1e34ea73 /mm/mm_init.c | |
| parent | 85968b6a2042cd19c6afd1fb49b64bd32f3a4d07 (diff) | |
mm/mm_init.c: use round_up() to calculate usermap size
Since pageblock_nr_pages and BITS_PER_LONG are power of 2, we could use
round_up() to calculate it.
Also we have renamed blockflags to pageblock_flags, adjust the comment
accordingly.
Link: https://lkml.kernel.org/r/20250212013818.873-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Suggested-by: Shivank Garg <shivankg@amd.com>
Reviewed-by: Shivank Garg <shivankg@amd.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/mm_init.c')
| -rw-r--r-- | mm/mm_init.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/mm_init.c b/mm/mm_init.c index 6078b3651f2e..c767946e8f5f 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -1431,7 +1431,7 @@ void __meminit init_currently_empty_zone(struct zone *zone, #ifndef CONFIG_SPARSEMEM /* - * Calculate the size of the zone->blockflags rounded to an unsigned long + * Calculate the size of the zone->pageblock_flags rounded to an unsigned long * Start by making sure zonesize is a multiple of pageblock_order by rounding * up. Then use 1 NR_PAGEBLOCK_BITS worth of bits per pageblock, finally * round what is now in bits to nearest long in bits, then return it in @@ -1442,10 +1442,10 @@ static unsigned long __init usemap_size(unsigned long zone_start_pfn, unsigned l unsigned long usemapsize; zonesize += zone_start_pfn & (pageblock_nr_pages-1); - usemapsize = roundup(zonesize, pageblock_nr_pages); + usemapsize = round_up(zonesize, pageblock_nr_pages); usemapsize = usemapsize >> pageblock_order; usemapsize *= NR_PAGEBLOCK_BITS; - usemapsize = roundup(usemapsize, BITS_PER_LONG); + usemapsize = round_up(usemapsize, BITS_PER_LONG); return usemapsize / BITS_PER_BYTE; } |