The patch titled
Subject: mm/huge_memory: fix can_split_huge_page assumption of THP size
has been removed from the -mm tree. Its filename was
mm-huge_memory-fix-can_split_huge_page-assumption-of-thp-size.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm/huge_memory: fix can_split_huge_page assumption of THP size
Ask the page how many subpages it has instead of assuming it's PMD size.
Link: https://lkml.kernel.org/r/20200908195539.25896-8-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Reviewed-by: SeongJae Park <sjpark@xxxxxxxxx>
Acked-by: "Huang, Ying" <ying.huang@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/huge_memory.c~mm-huge_memory-fix-can_split_huge_page-assumption-of-thp-size
+++ a/mm/huge_memory.c
@@ -2582,9 +2582,9 @@ bool can_split_huge_page(struct page *pa
/* Additional pins from page cache */
if (PageAnon(page))
- extra_pins = PageSwapCache(page) ? HPAGE_PMD_NR : 0;
+ extra_pins = PageSwapCache(page) ? thp_nr_pages(page) : 0;
else
- extra_pins = HPAGE_PMD_NR;
+ extra_pins = thp_nr_pages(page);
if (pextra_pins)
*pextra_pins = extra_pins;
return total_mapcount(page) == page_count(page) - extra_pins - 1;
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-update-the-documentation-for-vfree.patch
