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mm/page_alloc: fix obsolete comment in deferred_pfn_valid()

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There are no architectures that can have holes in the memory map within a
pageblock since commit 859a85ddf9 ("mm: remove pfn_valid_within() and
CONFIG_HOLES_IN_ZONE").  Update the corresponding comment.

Link: https://lkml.kernel.org/r/20220916072257.9639-17-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-09-16 15:22:57 +08:00 • committed by Andrew Morton
parent def76fd549
commit c9b3637f8a
1 changed files with 1 additions and 5 deletions
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6
mm/page_alloc.c
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@ -1929,11 +1929,7 @@ static inline void __init pgdat_init_report_one_done(void)
/*
* Returns true if page needs to be initialized or freed to buddy allocator.
*
* First we check if pfn is valid on architectures where it is possible to have
* holes within pageblock_nr_pages. On systems where it is not possible, this
* function is optimized out.
*
* Then, we check if a current large page is valid by only checking the validity
* We check if a current large page is valid by only checking the validity
* of the head pfn.
*/
static inline bool __init deferred_pfn_valid(unsigned long pfn)