Commit c9b3637f authored by Miaohe Lin's avatar Miaohe Lin Committed by Andrew Morton
Browse files

mm/page_alloc: fix obsolete comment in deferred_pfn_valid() 

There are no architectures that can have holes in the memory map within a
pageblock since commit 859a85dd ("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: default avatarMiaohe Lin <linmiaohe@huawei.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Reviewed-by: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: default avatarOscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent def76fd5

mm/page_alloc.c

+1 −5
Original line number Diff line number Diff line
@@ -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)