From 6d2790d95d7cffaf0def36270032ce5228dd43a5 Mon Sep 17 00:00:00 2001 From: ZhangPeng Date: Fri, 21 Jul 2023 11:44:44 +0800 Subject: [PATCH] mm/page_io: introduce bio_first_folio_all() Introduce bio_first_folio_all() to return a folio, which makes it easier to use. Link: https://lkml.kernel.org/r/20230721034451.16412-4-zhangpeng362@huawei.com Signed-off-by: ZhangPeng Suggested-by: Matthew Wilcox (Oracle) Cc: Christoph Hellwig Cc: Kefeng Wang Cc: Nanyong Sun Cc: Sidhartha Kumar Signed-off-by: Andrew Morton --- Documentation/block/biovecs.rst | 1 + include/linux/bio.h | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/Documentation/block/biovecs.rst b/Documentation/block/biovecs.rst index ddb867e0185b..b9dc0c9dbee4 100644 --- a/Documentation/block/biovecs.rst +++ b/Documentation/block/biovecs.rst @@ -134,6 +134,7 @@ Usage of helpers: bio_for_each_bvec_all() bio_first_bvec_all() bio_first_page_all() + bio_first_folio_all() bio_last_bvec_all() * The following helpers iterate over single-page segment. The passed 'struct diff --git a/include/linux/bio.h b/include/linux/bio.h index c4f5b5228105..027ff9ab5d12 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -253,6 +253,11 @@ static inline struct page *bio_first_page_all(struct bio *bio) return bio_first_bvec_all(bio)->bv_page; } +static inline struct folio *bio_first_folio_all(struct bio *bio) +{ + return page_folio(bio_first_page_all(bio)); +} + static inline struct bio_vec *bio_last_bvec_all(struct bio *bio) { WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED));