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List: linux-aio
Subject: [PATCH rfc 2/9] mm: migrate_device: use more folio in __migrate_device_pages()
From: Kefeng Wang <wangkefeng.wang () huawei ! com>
Date: 2024-01-29 7:09:27
Message-ID: 20240129070934.3717659-3-wangkefeng.wang () huawei ! com
[Download RAW message or body]
Use newfolio/folio for migrate_folio_extra()/migrate_folio() to
save three compound_head() calls.
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
mm/migrate_device.c | 19 +++++++++----------
1 file changed, 9 insertions(+), 10 deletions(-)
diff --git a/mm/migrate_device.c b/mm/migrate_device.c
index b6c27c76e1a0..d49a48d87d72 100644
--- a/mm/migrate_device.c
+++ b/mm/migrate_device.c
@@ -694,6 +694,7 @@ static void __migrate_device_pages(unsigned long *src_pfns,
struct page *newpage = migrate_pfn_to_page(dst_pfns[i]);
struct page *page = migrate_pfn_to_page(src_pfns[i]);
struct address_space *mapping;
+ struct folio *newfolio, *folio;
int r;
if (!newpage) {
@@ -729,13 +730,12 @@ static void __migrate_device_pages(unsigned long *src_pfns,
}
mapping = page_mapping(page);
+ folio = page_folio(page);
+ newfolio = page_folio(newpage);
- if (is_device_private_page(newpage) ||
- is_device_coherent_page(newpage)) {
+ if (folio_is_device_private(newfolio) ||
+ folio_is_device_coherent(newfolio)) {
if (mapping) {
- struct folio *folio;
-
- folio = page_folio(page);
/*
* For now only support anonymous memory migrating to
@@ -749,7 +749,7 @@ static void __migrate_device_pages(unsigned long *src_pfns,
continue;
}
}
- } else if (is_zone_device_page(newpage)) {
+ } else if (folio_is_zone_device(newfolio)) {
/*
* Other types of ZONE_DEVICE page are not supported.
*/
@@ -758,12 +758,11 @@ static void __migrate_device_pages(unsigned long *src_pfns,
}
if (migrate && migrate->fault_page == page)
- r = migrate_folio_extra(mapping, page_folio(newpage),
- page_folio(page),
+ r = migrate_folio_extra(mapping, newfolio, folio,
MIGRATE_SYNC_NO_COPY, 1);
else
- r = migrate_folio(mapping, page_folio(newpage),
- page_folio(page), MIGRATE_SYNC_NO_COPY);
+ r = migrate_folio(mapping, newfolio, folio,
+ MIGRATE_SYNC_NO_COPY);
if (r != MIGRATEPAGE_SUCCESS)
src_pfns[i] &= ~MIGRATE_PFN_MIGRATE;
}
--
2.27.0
--
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