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Commit 74aa8c2c authored by Martin K. Petersen's avatar Martin K. Petersen Committed by Jens Axboe
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block: Introduce integrity data ownership flag 



A filesystem might supply its own integrity metadata.  Introduce a
flag that indicates whether the filesystem or the block layer owns the
integrity buffer.

Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent b04accc4

fs/bio-integrity.c

+2 −1
Original line number Diff line number Diff line
@@ -107,7 +107,8 @@ void bio_integrity_free(struct bio *bio, struct bio_set *bs) 
	BUG_ON(bip == NULL);



	/* A cloned bio doesn't own the integrity metadata */

	if (!bio_flagged(bio, BIO_CLONED) && bip->bip_buf != NULL)

	if (!bio_flagged(bio, BIO_CLONED) && !bio_flagged(bio, BIO_FS_INTEGRITY)

	    && bip->bip_buf != NULL)

		kfree(bip->bip_buf);



	mempool_free(bip->bip_vec, bs->bvec_pools[bip->bip_pool]);

include/linux/bio.h

+1 −0
Original line number Diff line number Diff line
@@ -109,6 +109,7 @@ struct bio { 
#define BIO_EOPNOTSUPP	7	/* not supported */

#define BIO_CPU_AFFINE	8	/* complete bio on same CPU as submitted */

#define BIO_NULL_MAPPED 9	/* contains invalid user pages */

#define BIO_FS_INTEGRITY 10	/* fs owns integrity data, not block layer */

#define bio_flagged(bio, flag)	((bio)->bi_flags & (1 << (flag)))



/*