diff options
Diffstat (limited to 'include/linux/blk-integrity.h')
| -rw-r--r-- | include/linux/blk-integrity.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/blk-integrity.h b/include/linux/blk-integrity.h index c15b1ac62765..fd3f3c8c0fcd 100644 --- a/include/linux/blk-integrity.h +++ b/include/linux/blk-integrity.h @@ -180,4 +180,27 @@ static inline struct bio_vec rq_integrity_vec(struct request *rq) } #endif /* CONFIG_BLK_DEV_INTEGRITY */ +enum bio_integrity_action { + BI_ACT_BUFFER = (1u << 0), /* allocate buffer */ + BI_ACT_CHECK = (1u << 1), /* generate / verify PI */ + BI_ACT_ZERO = (1u << 2), /* zero buffer */ +}; + +/** + * bio_integrity_action - return the integrity action needed for a bio + * @bio: bio to operate on + * + * Returns the mask of integrity actions (BI_ACT_*) that need to be performed + * for @bio. + */ +unsigned int __bio_integrity_action(struct bio *bio); +static inline unsigned int bio_integrity_action(struct bio *bio) +{ + if (!blk_get_integrity(bio->bi_bdev->bd_disk)) + return 0; + if (bio_integrity(bio)) + return 0; + return __bio_integrity_action(bio); +} + #endif /* _LINUX_BLK_INTEGRITY_H */ |