[PATCH v4] bio-integrity-fs: pass data iter to bio_integrity_verify()

[PATCH v4] bio-integrity-fs: pass data iter to bio_integrity_verify()

[Caleb Sander Mateos]

bio_integrity_verify() expects the passed struct bvec_iter to be an
iterator over bio data, not integrity. So construct a separate data
bvec_iter without the bio_integrity_bytes() conversion and pass it to
bio_integrity_verify() instead of bip_iter.

Fixes: 0bde8a12b554 ("block: add fs_bio_integrity helpers")
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Anuj Gupta <anuj20.g@samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
v4: split from series changing ref tag seed units
v3: https://lore.kernel.org/linux-block/20260417015732.2692434-3-csander@purestorage.com/

 block/bio-integrity-fs.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/block/bio-integrity-fs.c b/block/bio-integrity-fs.c
index acb1e5f270d2..0daa42d9ead7 100644
--- a/block/bio-integrity-fs.c
+++ b/block/bio-integrity-fs.c
@@ -53,21 +53,25 @@ EXPORT_SYMBOL_GPL(fs_bio_integrity_generate);
 
 int fs_bio_integrity_verify(struct bio *bio, sector_t sector, unsigned int size)
 {
 	struct blk_integrity *bi = blk_get_integrity(bio->bi_bdev->bd_disk);
 	struct bio_integrity_payload *bip = bio_integrity(bio);
+	struct bvec_iter data_iter = {
+		.bi_sector	= sector,
+		.bi_size	= size,
+	};
 
 	/*
 	 * Reinitialize bip->bip_iter.
 	 *
 	 * This is for use in the submitter after the driver is done with the
 	 * bio.  Requires the submitter to remember the sector and the size.
 	 */
 	memset(&bip->bip_iter, 0, sizeof(bip->bip_iter));
 	bip->bip_iter.bi_sector = sector;
 	bip->bip_iter.bi_size = bio_integrity_bytes(bi, size >> SECTOR_SHIFT);
-	return blk_status_to_errno(bio_integrity_verify(bio, &bip->bip_iter));
+	return blk_status_to_errno(bio_integrity_verify(bio, &data_iter));
 }
 
 static int __init fs_bio_integrity_init(void)
 {
 	fs_bio_integrity_cache = kmem_cache_create("fs_bio_integrity",
-- 
2.54.0