From c76e14dc13bcf89f3b55fd9dcd036a453a822d79 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Fri, 24 Mar 2023 18:01:02 +0000 Subject: fscrypt: Add some folio helper functions fscrypt_is_bounce_folio() is the equivalent of fscrypt_is_bounce_page() and fscrypt_pagecache_folio() is the equivalent of fscrypt_pagecache_page(). Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Ritesh Harjani (IBM) Link: https://lore.kernel.org/r/20230324180129.1220691-3-willy@infradead.org Signed-off-by: Theodore Ts'o --- include/linux/fscrypt.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux/fscrypt.h') diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h index e0a49c3125eb..c068cb487aaa 100644 --- a/include/linux/fscrypt.h +++ b/include/linux/fscrypt.h @@ -273,6 +273,16 @@ static inline struct page *fscrypt_pagecache_page(struct page *bounce_page) return (struct page *)page_private(bounce_page); } +static inline bool fscrypt_is_bounce_folio(struct folio *folio) +{ + return folio->mapping == NULL; +} + +static inline struct folio *fscrypt_pagecache_folio(struct folio *bounce_folio) +{ + return bounce_folio->private; +} + void fscrypt_free_bounce_page(struct page *bounce_page); /* policy.c */ @@ -445,6 +455,17 @@ static inline struct page *fscrypt_pagecache_page(struct page *bounce_page) return ERR_PTR(-EINVAL); } +static inline bool fscrypt_is_bounce_folio(struct folio *folio) +{ + return false; +} + +static inline struct folio *fscrypt_pagecache_folio(struct folio *bounce_folio) +{ + WARN_ON_ONCE(1); + return ERR_PTR(-EINVAL); +} + static inline void fscrypt_free_bounce_page(struct page *bounce_page) { } -- cgit