[PATCH v6 1/5] mm/page_alloc: introduce __free_prepared_contig_range() with fpi_t

[Jiaqi Yan]

A future commit introducing free_has_hwpoison() to be called within
__free_pages_prepare() will need to pass specific fpi_t flags when
freeing a contiguous range of pages. Currently,
free_prepared_contig_range() hardcodes the FPI_PREPARED flag and
does not accept any caller-provided flags.

Rename the core logic to __free_prepared_contig_range() to accept
an fpi_t argument. It bitwise ORs with the required FPI_PREPARED
flag.

This is a preparatory commit with no functional changes.

Signed-off-by: Jiaqi Yan <jiaqiyan@xxxxxxxxxx>
---
 mm/page_alloc.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 762d9b6bc792..7d27aff48b15 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6852,8 +6852,8 @@ void __init page_alloc_sysctl_init(void)
 	register_sysctl_init("vm", page_alloc_sysctl_table);
 }
 
-static void free_prepared_contig_range(struct page *page,
-		unsigned long nr_pages)
+static void __free_prepared_contig_range(struct page *page,
+		unsigned long nr_pages, fpi_t fpi_flags)
 {
 	unsigned long pfn = page_to_pfn(page);
 
@@ -6870,7 +6870,7 @@ static void free_prepared_contig_range(struct page *page,
 		 * Free the chunk as a single block. Our caller has already
 		 * called free_pages_prepare() for each order-0 page.
 		 */
-		__free_frozen_pages(page, order, FPI_PREPARED);
+		__free_frozen_pages(page, order, fpi_flags | FPI_PREPARED);
 
 		pfn += 1UL << order;
 		page += 1UL << order;
@@ -6878,6 +6878,11 @@ static void free_prepared_contig_range(struct page *page,
 	}
 }
 
+static void free_prepared_contig_range(struct page *page, unsigned long nr_pages)
+{
+	__free_prepared_contig_range(page, nr_pages, FPI_NONE);
+}
+
 static void __free_contig_range_common(unsigned long pfn, unsigned long nr_pages,
 		bool is_frozen)
 {
-- 
2.55.0.rc0.799.gd6f94ed593-goog