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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-04-08 01:33:45 -0400 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-12-16 15:49:51 -0500 |
| commit | 85f5a74c2b9ba213d4102dc12ccbfdbe26472abb (patch) | |
| tree | 03ac987502f88052aaed845eae9de886a2edde3c /include/linux/bio.h | |
| parent | Linux 5.16-rc5 (diff) | |
| download | wireguard-linux-85f5a74c2b9ba213d4102dc12ccbfdbe26472abb.tar.xz wireguard-linux-85f5a74c2b9ba213d4102dc12ccbfdbe26472abb.zip | |
block: Add bio_add_folio()
This is a thin wrapper around bio_add_page(). The main advantage here
is the documentation that folios larger than 2GiB are not supported.
It's not currently possible to allocate folios that large, but if it
ever becomes possible, this function will fail gracefully instead of
doing I/O to the wrong bytes.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'include/linux/bio.h')
| -rw-r--r-- | include/linux/bio.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index fe6bdfbbef66..a783cac49978 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -409,7 +409,8 @@ extern void bio_uninit(struct bio *); extern void bio_reset(struct bio *); void bio_chain(struct bio *, struct bio *); -extern int bio_add_page(struct bio *, struct page *, unsigned int,unsigned int); +int bio_add_page(struct bio *, struct page *, unsigned len, unsigned off); +bool bio_add_folio(struct bio *, struct folio *, size_t len, size_t off); extern int bio_add_pc_page(struct request_queue *, struct bio *, struct page *, unsigned int, unsigned int); int bio_add_zone_append_page(struct bio *bio, struct page *page, |