Commit 7a150f1e authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by Jens Axboe
Browse files

block: add bio_add_folio_nofail 



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

Reviewed-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/924dff4077812804398ef84128fb920507fa4be1.1685532726.git.johannes.thumshirn@wdc.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 83f2caaa

block/bio.c

+8 −0
Original line number Diff line number Diff line
@@ -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.

include/linux/bio.h

+2 −0
Original line number Diff line number Diff line
@@ -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);