Re: [PATCH] mm/doc: Replace isolate_lru_page with folio_isolate_lru
From: Jonathan Corbet <corbet@lwn.net>
Date: 2023-02-02 18:02:46
Also in:
linux-doc, linux-mediatek, linux-mm, lkml
Kuan-Ying Lee [off-list ref] writes:
Since we introduce folio, replace isolate_lru_page() with folio_isolate_lru(). Signed-off-by: Kuan-Ying Lee <redacted> --- Documentation/mm/page_migration.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
This seems like a good patch to copy to linux-mm - done now. The patch perhaps is a closer match to what's in linux-next, but it seems that, if we're going to update this document, we should reflect the use folios throughout? Thanks, jon
quoted hunk ↗ jump to hunk
diff --git a/Documentation/mm/page_migration.rst b/Documentation/mm/page_migration.rst index 11493bad7112..1f8cc175d770 100644 --- a/Documentation/mm/page_migration.rst +++ b/Documentation/mm/page_migration.rst@@ -69,8 +69,8 @@ In kernel use of migrate_pages() Lists of pages to be migrated are generated by scanning over pages and moving them into lists. This is done by - calling isolate_lru_page(). - Calling isolate_lru_page() increases the references to the page + calling folio_isolate_lru(). + Calling folio_isolate_lru() increases the references to the page so that it cannot vanish while the page migration occurs. It also prevents the swapper or other scans from encountering the page.@@ -89,7 +89,7 @@ How migrate_pages() works migrate_pages() does several passes over its list of pages. A page is moved if all references to a page are removable at the time. The page has -already been removed from the LRU via isolate_lru_page() and the refcount +already been removed from the LRU via folio_isolate_lru() and the refcount is increased so that the page cannot be freed while page migration occurs. Steps:-- 2.18.0
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