[PATCH 2/3] md: Use folio APIs in free_page()
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: 2026-09-14 04:18:51
Also in:
linux-mm
Subsystem:
software raid (multiple disks) support, the rest · Maintainers:
Song Liu, Yu Kuai, Linus Torvalds
Convert the page to a folio. This removes some of the last uses of a few page APIs (detach_page_private(), page_buffers()). Replaces two calls to compound_head() with one. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> --- drivers/md/md-bitmap.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 5f1637f974c1..7b42db87d536 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c@@ -533,19 +533,18 @@ static void write_file_page(struct bitmap *bitmap, struct page *page, int wait) static void free_buffers(struct page *page) { - struct buffer_head *bh; + struct folio *folio = page_folio(page); + struct buffer_head *bh = folio_detach_private(folio); - if (!PagePrivate(page)) + if (!bh) return; - bh = page_buffers(page); while (bh) { struct buffer_head *next = bh->b_this_page; free_buffer_head(bh); bh = next; } - detach_page_private(page); - put_page(page); + folio_put(folio); } /* read a page from a file.
--
2.47.3