bio-integrity: update the payload size in bio_integrity_add_page()

Previously, the bip's bi_size has been set before an integrity pages
were added. If a problem occurs in the process of adding pages for
bip, the bi_size mismatch problem must be dealt with.

When the page is successfully added to bvec, the bi_size is updated.

The parts affected by the change were also contained in this commit.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jinyoung Choi <j-young.choi@samsung.com>
Tested-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20230803024956epcms2p38186a17392706650c582d38ef3dbcd32@epcms2p3
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index 045553a..6220a99 100644 (file)
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -137,6 +137,7 @@ int bio_integrity_add_page(struct bio *bio, struct page *page,
 
        bvec_set_page(&bip->bip_vec[bip->bip_vcnt], page, len, offset);
        bip->bip_vcnt++;
+       bip->bip_iter.bi_size += len;
 
        return len;
 }
@@ -244,7 +245,6 @@ bool bio_integrity_prep(struct bio *bio)
        }
 
        bip->bip_flags |= BIP_BLOCK_INTEGRITY;
-       bip->bip_iter.bi_size = len;
        bip_set_seed(bip, bio->bi_iter.bi_sector);
 
        if (bi->flags & BLK_INTEGRITY_IP_CHECKSUM)

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 1dc6227..f2662c2 100644 (file)
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1160,7 +1160,6 @@ static int dm_crypt_integrity_io_alloc(struct dm_crypt_io *io, struct bio *bio)
 
        tag_len = io->cc->on_disk_tag_size * (bio_sectors(bio) >> io->cc->sector_shift);
 
-       bip->bip_iter.bi_size = tag_len;
        bip->bip_iter.bi_sector = io->cc->start + io->sector;
 
        ret = bio_integrity_add_page(bio, virt_to_page(io->integrity_metadata),

diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c
index 5c3250f..19a5177 100644 (file)
--- a/drivers/nvme/host/ioctl.c
+++ b/drivers/nvme/host/ioctl.c
@@ -118,7 +118,6 @@ static void *nvme_add_user_metadata(struct request *req, void __user *ubuf,
                goto out_free_meta;
        }
 
-       bip->bip_iter.bi_size = len;
        bip->bip_iter.bi_sector = seed;
        ret = bio_integrity_add_page(bio, virt_to_page(buf), len,
                        offset_in_page(buf));

diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c
index 2733e01..4688336 100644 (file)
--- a/drivers/nvme/target/io-cmd-bdev.c
+++ b/drivers/nvme/target/io-cmd-bdev.c
@@ -206,12 +206,11 @@ static int nvmet_bdev_alloc_bip(struct nvmet_req *req, struct bio *bio,
                return PTR_ERR(bip);
        }
 
-       bip->bip_iter.bi_size = bio_integrity_bytes(bi, bio_sectors(bio));
        /* virtual start sector must be in integrity interval units */
        bip_set_seed(bip, bio->bi_iter.bi_sector >>
                     (bi->interval_exp - SECTOR_SHIFT));
 
-       resid = bip->bip_iter.bi_size;
+       resid = bio_integrity_bytes(bi, bio_sectors(bio));
        while (resid > 0 && sg_miter_next(miter)) {
                len = min_t(size_t, miter->length, resid);
                rc = bio_integrity_add_page(bio, miter->page, len,

diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 3d1b511..a7050f6 100644 (file)
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -689,7 +689,6 @@ iblock_alloc_bip(struct se_cmd *cmd, struct bio *bio,
                return PTR_ERR(bip);
        }
 
-       bip->bip_iter.bi_size = bio_integrity_bytes(bi, bio_sectors(bio));
        /* virtual start sector must be in integrity interval units */
        bip_set_seed(bip, bio->bi_iter.bi_sector >>
                                  (bi->interval_exp - SECTOR_SHIFT));
@@ -697,7 +696,7 @@ iblock_alloc_bip(struct se_cmd *cmd, struct bio *bio,
        pr_debug("IBLOCK BIP Size: %u Sector: %llu\n", bip->bip_iter.bi_size,
                 (unsigned long long)bip->bip_iter.bi_sector);
 
-       resid = bip->bip_iter.bi_size;
+       resid = bio_integrity_bytes(bi, bio_sectors(bio));
        while (resid > 0 && sg_miter_next(miter)) {
 
                len = min_t(size_t, miter->length, resid);