The patch titled
Subject: mm/page_isolation.c: remove redundant pfn_valid_within() in __first_valid_page()
has been added to the -mm tree. Its filename is
mm-isolation-remove-redundant-pfn_valid_within-in-__first_valid_page.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-isolation-remove-redundant-pfn_valid_within-in-__first_valid_page.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-isolation-remove-redundant-pfn_valid_within-in-__first_valid_page.patch
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------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Subject: mm/page_isolation.c: remove redundant pfn_valid_within() in __first_valid_page()
pfn_valid_within() calls pfn_valid() when CONFIG_HOLES_IN_ZONE making it
redundant for both definitions (w/wo CONFIG_MEMORY_HOTPLUG) of the helper
pfn_to_online_page() which either calls pfn_valid() or pfn_valid_within().
pfn_valid_within() being 1 when !CONFIG_HOLES_IN_ZONE is irrelevant
either way. This does not change functionality.
Link: http://lkml.kernel.org/r/1553141595-26907-1-git-send-email-anshuman.khandual@xxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>
Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_isolation.c | 2 --
1 file changed, 2 deletions(-)
--- a/mm/page_isolation.c~mm-isolation-remove-redundant-pfn_valid_within-in-__first_valid_page
+++ a/mm/page_isolation.c
@@ -151,8 +151,6 @@ __first_valid_page(unsigned long pfn, un
for (i = 0; i < nr_pages; i++) {
struct page *page;
- if (!pfn_valid_within(pfn + i))
- continue;
page = pfn_to_online_page(pfn + i);
if (!page)
continue;
_
Patches currently in -mm which might be from anshuman.khandual@xxxxxxx are
mm-isolation-remove-redundant-pfn_valid_within-in-__first_valid_page.patch
