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authorPankaj Raghav <[email protected]>2023-04-17 14:36:16 +0200
committerAndrew Morton <[email protected]>2023-04-21 14:52:01 -0700
commitc71124a8afa441af203d2001a92c91f114446687 (patch)
tree1b111553fcda41b94e8bd1f77e76033976e68e58 /include/linux
parent465e5e6a1698f3325f5d2262d2875779b06b50c7 (diff)
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/[email protected] Signed-off-by: Pankaj Raghav <[email protected]> Reviewed-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Hannes Reinecke <[email protected]> Cc: Alexander Viro <[email protected]> Cc: Christian Brauner <[email protected]> Cc: Luis Chamberlain <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/buffer_head.h2
1 files changed, 2 insertions, 0 deletions
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,