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authorMiaohe Lin <linmiaohe@huawei.com>2022-09-16 15:22:57 +0800
committerAndrew Morton <akpm@linux-foundation.org>2022-10-03 14:03:30 -0700
commitc9b3637f8a5a4c869f78c26773c559669796212f (patch)
tree01a2b72ecb5d1b86862447039171fb265c0507de
parentdef76fd549c513bb90278a8d6d0fe3ef3faa20a7 (diff)
downloadlinux-c9b3637f8a5a4c869f78c26773c559669796212f.tar.bz2
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 859a85ddf90e ("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>
-rw-r--r--mm/page_alloc.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 23f839e1d89e..66f7778732fb 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -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)