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bio-integrity: fold bio_integrity_enabled to bio_integrity_prep

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Currently all integrity prep hooks are open-coded, and if prepare fails
we ignore it's code and fail bio with EIO. Let's return real error to
upper layer, so later caller may react accordingly.

In fact no one want to use bio_integrity_prep() w/o bio_integrity_enabled,
so it is reasonable to fold it in to one function.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
[hch: merged with the latest block tree,
	return bool from bio_integrity_prep]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Dmitry Monakhov
2017-06-29 11:31:11 -07:00
committed by Jens Axboe
parent fbd08e7673
commit e23947bd76
7 changed files with 50 additions and 91 deletions
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12
include/linux/bio.h
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@@ -724,8 +724,7 @@ struct biovec_slab {
extern struct bio_integrity_payload *bio_integrity_alloc(struct bio *, gfp_t, unsigned int);
extern void bio_integrity_free(struct bio *);
extern int bio_integrity_add_page(struct bio *, struct page *, unsigned int, unsigned int);
extern bool bio_integrity_enabled(struct bio *bio);
extern int bio_integrity_prep(struct bio *);
extern bool bio_integrity_prep(struct bio *);
extern void bio_integrity_endio(struct bio *);
extern void bio_integrity_advance(struct bio *, unsigned int);
extern void bio_integrity_trim(struct bio *);
@@ -741,11 +740,6 @@ static inline void *bio_integrity(struct bio *bio)
return NULL;
}
static inline bool bio_integrity_enabled(struct bio *bio)
{
return false;
}
static inline int bioset_integrity_create(struct bio_set *bs, int pool_size)
{
return 0;
@@ -756,9 +750,9 @@ static inline void bioset_integrity_free (struct bio_set *bs)
return;
}
static inline int bio_integrity_prep(struct bio *bio)
static inline bool bio_integrity_prep(struct bio *bio)
{
return 0;
return true;
}
static inline void bio_integrity_free(struct bio *bio)