diff options
| author | Kundan Kumar <kundan.kumar@samsung.com> | 2024-09-11 12:19:32 +0530 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-09-11 07:24:00 -0600 |
| commit | 7de98954687fe152c5f38afd719b3fdf9f34020a (patch) | |
| tree | 312848e406236b3f9be8a75861e51fbc4fd6dee5 | |
| parent | a7609d2aec67ec16220036a5b1b14610883cdbd3 (diff) | |
| download | lwn-7de98954687fe152c5f38afd719b3fdf9f34020a.tar.gz lwn-7de98954687fe152c5f38afd719b3fdf9f34020a.zip | |
block: Added folio-ized version of bio_add_hw_page()
Added new bio_add_hw_folio() function as a wrapper around
bio_add_hw_page(). This is a prep patch.
Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com>
Tested-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lore.kernel.org/r/20240911064935.5630-2-kundan.kumar@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/bio.c | 23 | ||||
| -rw-r--r-- | block/blk.h | 4 |
2 files changed, 27 insertions, 0 deletions
diff --git a/block/bio.c b/block/bio.c index c4053d49679a..f9d759315f4d 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1017,6 +1017,29 @@ int bio_add_hw_page(struct request_queue *q, struct bio *bio, } /** + * bio_add_hw_folio - attempt to add a folio to a bio with hw constraints + * @q: the target queue + * @bio: destination bio + * @folio: folio to add + * @len: vec entry length + * @offset: vec entry offset in the folio + * @max_sectors: maximum number of sectors that can be added + * @same_page: return if the segment has been merged inside the same folio + * + * Add a folio to a bio while respecting the hardware max_sectors, max_segment + * and gap limitations. + */ +int bio_add_hw_folio(struct request_queue *q, struct bio *bio, + struct folio *folio, size_t len, size_t offset, + unsigned int max_sectors, bool *same_page) +{ + if (len > UINT_MAX || offset > UINT_MAX) + return 0; + return bio_add_hw_page(q, bio, folio_page(folio, 0), len, offset, + max_sectors, same_page); +} + +/** * bio_add_pc_page - attempt to add page to passthrough bio * @q: the target queue * @bio: destination bio diff --git a/block/blk.h b/block/blk.h index 32f4e9f630a3..86affb583eb6 100644 --- a/block/blk.h +++ b/block/blk.h @@ -574,6 +574,10 @@ int bio_add_hw_page(struct request_queue *q, struct bio *bio, struct page *page, unsigned int len, unsigned int offset, unsigned int max_sectors, bool *same_page); +int bio_add_hw_folio(struct request_queue *q, struct bio *bio, + struct folio *folio, size_t len, size_t offset, + unsigned int max_sectors, bool *same_page); + /* * Clean up a page appropriately, where the page may be pinned, may have a * ref taken on it or neither. |