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block: Introduce integrity data ownership flag

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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: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Martin K. Petersen 2008-10-01 03:38:37 -04:00 • committed by Jens Axboe
commit 74aa8c2cc0
2 changed files with 3 additions and 1 deletions
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1
include/linux/bio.h
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@ -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)))
/*