[PATCH v5 18/20] block: add __bio_add_folio

Johannes Thumshirn
2023-05-02T16:49:27Z

Just like for bio_add_pages() add a no-fail variant for bio_add_folio().

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
block/bio.c | 8 ++++++++
include/linux/bio.h | 1 +
2 files changed, 9 insertions(+)

diff --git a/block/bio.c b/block/bio.c
index 043944fd46eb..350c653d4a57 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1138,6 +1138,14 @@ int bio_add_page(struct bio *bio, struct page *page,
}
EXPORT_SYMBOL(bio_add_page);

+void __bio_add_folio(struct bio *bio, struct folio *folio, size_t len,
+ size_t off)
+{
+ WARN_ON_ONCE(len > UINT_MAX);
+ WARN_ON_ONCE(off > UINT_MAX);
+ __bio_add_page(bio, &folio->page, len, off);
+}
+
/**
* bio_add_folio - Attempt to add part of a folio to a bio.
* @bio: BIO to add to.
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 5d5b081ee062..4232a17e6b10 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -473,6 +473,7 @@ int bio_add_zone_append_page(struct bio *bio, struct page *page,
unsigned int len, unsigned int offset);
void __bio_add_page(struct bio *bio, struct page *page,
unsigned int len, unsigned int off);
+void __bio_add_folio(struct bio *, struct folio *, size_t len, size_t off);
int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter);
void bio_iov_bvec_set(struct bio *bio, struct iov_iter *iter);
void __bio_release_pages(struct bio *bio, bool mark_dirty);
--
2.40.0