The quilt patch titled
Subject: mm: migrate_device: unify migrate folio for MIGRATE_SYNC_NO_COPY
has been removed from the -mm tree. Its filename was
mm-migrate_device-unify-migrate-folio-for-migrate_sync_no_copy.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: mm: migrate_device: unify migrate folio for MIGRATE_SYNC_NO_COPY
Date: Fri, 24 May 2024 13:28:41 +0800
The __migrate_device_pages() won't copy page so MIGRATE_SYNC_NO_COPY
passed into migrate_folio()/migrate_folio_extra(), actually a easy way is
just to call folio_migrate_mapping()/folio_migrate_flags(), converting it
to unify and simplify the migrate device pages, which also remove the only
call for MIGRATE_SYNC_NO_COPY.
Link: https://lkml.kernel.org/r/20240524052843.182275-4-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Reviewed-by: Jane Chu <jane.chu@xxxxxxxxxx>
Cc: Alistair Popple <apopple@xxxxxxxxxx>
Cc: Benjamin LaHaise <bcrl@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Jiaqi Yan <jiaqiyan@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Naoya Horiguchi <nao.horiguchi@xxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
Cc: Zi Yan <ziy@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate_device.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
--- a/mm/migrate_device.c~mm-migrate_device-unify-migrate-folio-for-migrate_sync_no_copy
+++ a/mm/migrate_device.c
@@ -693,7 +693,7 @@ static void __migrate_device_pages(unsig
struct page *page = migrate_pfn_to_page(src_pfns[i]);
struct address_space *mapping;
struct folio *newfolio, *folio;
- int r;
+ int r, extra_cnt = 0;
if (!newpage) {
src_pfns[i] &= ~MIGRATE_PFN_MIGRATE;
@@ -754,14 +754,15 @@ static void __migrate_device_pages(unsig
continue;
}
+ BUG_ON(folio_test_writeback(folio));
+
if (migrate && migrate->fault_page == page)
- r = migrate_folio_extra(mapping, newfolio, folio,
- MIGRATE_SYNC_NO_COPY, 1);
- else
- r = migrate_folio(mapping, newfolio, folio,
- MIGRATE_SYNC_NO_COPY);
+ extra_cnt = 1;
+ r = folio_migrate_mapping(mapping, newfolio, folio, extra_cnt);
if (r != MIGRATEPAGE_SUCCESS)
src_pfns[i] &= ~MIGRATE_PFN_MIGRATE;
+ else
+ folio_migrate_flags(newfolio, folio);
}
if (notified)
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
fs-proc-task_mmu-use-folio-api-in-pte_is_pinned.patch
mm-remove-page_maybe_dma_pinned.patch
mm-remove-page_maybe_dma_pinned-fix.patch
fb_defio-use-a-folio-in-fb_deferred_io_work.patch
mm-remove-page_mkclean.patch
mm-move-memory_failure_queue-into-copy_mc__highpage.patch
mm-add-folio_mc_copy.patch
mm-migrate-split-folio_migrate_mapping.patch
mm-migrate-support-poisoned-recover-from-migrate-folio.patch
fs-hugetlbfs-support-poison-recover-from-hugetlbfs_migrate_folio.patch
mm-migrate-remove-folio_migrate_copy.patch
mm-memory-convert-clear_huge_page-to-folio_zero_user.patch
mm-memory-use-folio-in-struct-copy_subpage_arg.patch
mm-memory-improve-copy_user_large_folio.patch
mm-memory-rename-pages_per_huge_page-to-nr_pages.patch
