block: add bio_add_folio_nofail

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>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/924dff4077812804398ef84128fb920507fa4be1.1685532726.git.johannes.thumshirn@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/bio.c b/block/bio.c
index 798cc4cf3bd2dd41d491c41e6c1f910ae904264f..8672179213b93902dde50a1d125f9563f80a4dcd 100644 (file)
--- 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 d63f0bb47c6509e53eeccca8636866d9e5208763..0002bd78e02da04d526104cd3802354470b8c0c4 100644 (file)
--- 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);