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mm: remove unnecessary empty range check in early_calculate_totalpages()

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early_calculate_totalpages() iterates the memory ranges with
for_each_mem_pfn_range() and calls node_set_state(nid, N_MEMORY) only when
end_pfn - start_pfn is non-zero. for_each_mem_pfn_range() never returns an
empty range, so start_pfn < end_pfn always.

Therefore the check is unnecessary, so remove it.

No functional change.

Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Link: https://patch.msgid.link/20260630150413.1718632-8-ekffu200098@gmail.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
This commit is contained in:
Sang-Heon Jeon 2026-07-01 00:04:12 +09:00 committed by Mike Rapoport (Microsoft)
parent 21e95a4b6f
commit c6af91e485
1 changed files with 1 additions and 2 deletions
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3
mm/mm_init.c
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@ -332,8 +332,7 @@ static unsigned long __init early_calculate_totalpages(void)
unsigned long pages = end_pfn - start_pfn;
totalpages += pages;
if (pages)
node_set_state(nid, N_MEMORY);
node_set_state(nid, N_MEMORY);
}
return totalpages;
}