From c71124a8afa441af203d2001a92c91f114446687 Mon Sep 17 00:00:00 2001
From: Pankaj Raghav
Date: Mon, 17 Apr 2023 14:36:16 +0200
Subject: buffer: add folio_alloc_buffers() helper
Folio version of alloc_page_buffers() helper. This is required to convert
create_page_buffers() to folio_create_buffers() later in the series.
alloc_page_buffers() has been modified to call folio_alloc_buffers() which
adds one call to compound_head() but folio_alloc_buffers() removes one
call to compound_head() compared to the existing alloc_page_buffers()
implementation.
Link: https://lkml.kernel.org/r/20230417123618.22094-3-p.raghav@samsung.com
Signed-off-by: Pankaj Raghav
Reviewed-by: Matthew Wilcox (Oracle)
Reviewed-by: Hannes Reinecke
Cc: Alexander Viro
Cc: Christian Brauner
Cc: Luis Chamberlain
Signed-off-by: Andrew Morton
---
include/linux/buffer_head.h | 2 ++
1 file changed, 2 insertions(+)
(limited to 'include/linux/buffer_head.h')
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 7e92d23f4782..0b14eab41bd1 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -199,6 +199,8 @@ void set_bh_page(struct buffer_head *bh,
void folio_set_bh(struct buffer_head *bh, struct folio *folio,
unsigned long offset);
bool try_to_free_buffers(struct folio *);
+struct buffer_head *folio_alloc_buffers(struct folio *folio, unsigned long size,
+ bool retry);
struct buffer_head *alloc_page_buffers(struct page *page, unsigned long size,
bool retry);
void create_empty_buffers(struct page *, unsigned long,
--
cgit