The patch titled
Subject: mm-thp-split-huge-page-to-any-lower-order-pages-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-thp-split-huge-page-to-any-lower-order-pages-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-thp-split-huge-page-to-any-lower-order-pages-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Zi Yan <ziy@xxxxxxxxxx>
Subject: mm-thp-split-huge-page-to-any-lower-order-pages-fix
Date: Wed, 28 Feb 2024 10:52:23 -0500
fixup per discussion with Ryan at https://lore.kernel.org/linux-mm/408df79a-130e-43cd-a21a-9b3a2ddef617
Link: https://lkml.kernel.org/r/494F48CD-1F0F-4CAD-884E-6D48F40AF990@xxxxxxxxxx
Signed-off-by: Zi Yan <ziy@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Luis Chamberlain <mcgrof@xxxxxxxxxx>
Cc: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Cc: Michal Koutny <mkoutny@xxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Ryan Roberts <ryan.roberts@xxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Cc: Yu Zhao <yuzhao@xxxxxxxxxx>
Cc: Zach O'Keefe <zokeefe@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
--- a/mm/huge_memory.c~mm-thp-split-huge-page-to-any-lower-order-pages-fix
+++ a/mm/huge_memory.c
@@ -3059,11 +3059,8 @@ int split_huge_page_to_list_to_order(str
if (new_order) {
/* Only swapping a whole PMD-mapped folio is supported */
- if (folio_test_swapcache(folio)) {
- VM_WARN_ONCE(1,
- "Cannot split swap-cached folio to non-0 order");
+ if (folio_test_swapcache(folio))
return -EINVAL;
- }
/* Split shmem folio to non-zero order not supported */
if (shmem_mapping(folio->mapping)) {
VM_WARN_ONCE(1,
_
Patches currently in -mm which might be from ziy@xxxxxxxxxx are
mm-huge_memory-only-split-pmd-mapping-when-necessary-in-unmap_folio.patch
mm-memcg-use-order-instead-of-nr-in-split_page_memcg.patch
mm-page_owner-use-order-instead-of-nr-in-split_page_owner.patch
mm-memcg-make-memcg-huge-page-split-support-any-order-split.patch
mm-page_owner-add-support-for-splitting-to-any-order-in-split-page_owner.patch
mm-thp-split-huge-page-to-any-lower-order-pages.patch
mm-thp-split-huge-page-to-any-lower-order-pages-fix.patch
mm-huge_memory-enable-debugfs-to-split-huge-pages-to-any-order.patch
