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block: Add a disk flag to block integrity profile

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So far we have relied on the app tag size to determine whether a disk
has been formatted with T10 protection information or not. However, not
all target devices provide application tag storage.

Add a flag to the block integrity profile that indicates whether the
disk has been formatted with protection information.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Sagi Grimberg <sagig@dev.mellanox.co.il>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Martin K. Petersen 2014-09-26 19:20:03 -04:00 • committed by Jens Axboe
parent 8288f496eb
commit 3aec2f41a8
4 changed files with 28 additions and 1 deletions
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1
include/linux/blkdev.h
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@ -1461,6 +1461,7 @@ static inline uint64_t rq_io_start_time_ns(struct request *req)
enum blk_integrity_flags {
BLK_INTEGRITY_VERIFY = 1 << 0,
BLK_INTEGRITY_GENERATE = 1 << 1,
BLK_INTEGRITY_DEVICE_CAPABLE = 1 << 2,
};
struct blk_integrity_iter {