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block: don't free the integrity payload in bio_integrity_unmap_free_user

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Now that the integrity payload is always freed in bio_uninit, don't
bother freeing it a little earlier in bio_integrity_unmap_free_user.
With that the separate bio_integrity_unmap_free_user can go away by
just passing the bio to bio_integrity_unmap_user.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240702151047.1746127-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2024-07-02 17:10:24 +02:00 committed by Jens Axboe
parent 85253bac4d
commit 74cc150282
3 changed files with 14 additions and 23 deletions
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31
block/bio-integrity.c
View file

@ -131,34 +131,25 @@ static void bio_integrity_uncopy_user(struct bio_integrity_payload *bip)
bio_integrity_unpin_bvec(copy, nr_vecs, true);
}
static void bio_integrity_unmap_user(struct bio_integrity_payload *bip)
/**
* bio_integrity_unmap_user - Unmap user integrity payload
* @bio: bio containing bip to be unmapped
*
* Unmap the user mapped integrity portion of a bio.
*/
void bio_integrity_unmap_user(struct bio *bio)
{
bool dirty = bio_data_dir(bip->bip_bio) == READ;
struct bio_integrity_payload *bip = bio_integrity(bio);
if (bip->bip_flags & BIP_COPY_USER) {
if (dirty)
if (bio_data_dir(bio) == READ)
bio_integrity_uncopy_user(bip);
kfree(bvec_virt(bip->bip_vec));
return;
}
bio_integrity_unpin_bvec(bip->bip_vec, bip->bip_max_vcnt, dirty);
}
/**
* bio_integrity_unmap_free_user - Unmap and free bio user integrity payload
* @bio: bio containing bip to be unmapped and freed
*
* Description: Used to unmap and free the user mapped integrity portion of a
* bio. Submitter attaching the user integrity buffer is responsible for
* unmapping and freeing it during completion.
*/
void bio_integrity_unmap_free_user(struct bio *bio)
{
struct bio_integrity_payload *bip = bio_integrity(bio);
bio_integrity_unmap_user(bip);
bio_integrity_free(bio);
bio_integrity_unpin_bvec(bip->bip_vec, bip->bip_max_vcnt,
bio_data_dir(bio) == READ);
}
/**

2
block/blk-map.c
View file

@ -758,7 +758,7 @@ int blk_rq_unmap_user(struct bio *bio)
}
if (bio_integrity(bio))
bio_integrity_unmap_free_user(bio);
bio_integrity_unmap_user(bio);
next_bio = bio;
bio = bio->bi_next;

4
include/linux/bio-integrity.h
View file

@ -73,7 +73,7 @@ struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio, gfp_t gfp,
int bio_integrity_add_page(struct bio *bio, struct page *page, unsigned int len,
unsigned int offset);
int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t len, u32 seed);
void bio_integrity_unmap_free_user(struct bio *bio);
void bio_integrity_unmap_user(struct bio *bio);
bool bio_integrity_prep(struct bio *bio);
void bio_integrity_advance(struct bio *bio, unsigned int bytes_done);
void bio_integrity_trim(struct bio *bio);
@ -104,7 +104,7 @@ static inline int bio_integrity_map_user(struct bio *bio, void __user *ubuf,
return -EINVAL;
}
static inline void bio_integrity_unmap_free_user(struct bio *bio)
static inline void bio_integrity_unmap_user(struct bio *bio)
{
}