[PATCH v7 18/20] block: add bio_add_folio_nofail

[Johannes Thumshirn <johannes.thumshirn@wdc.com>]

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

Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
 block/bio.c         | 8 ++++++++
 include/linux/bio.h | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/block/bio.c b/block/bio.c
index 043944fd46eb..07bc5139f9db 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_nofail(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 ea2d937d3cba..f907d75af205 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -474,6 +474,8 @@ 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_nofail(struct bio *bio, struct folio *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);
-- 
2.40.1