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    Subject[PATCH 4/7] block: gendisk integrity wrapper
    Date
    This is a wrapper for accessing a gendisk's integrity bits.  It allows
    the integrity support in MD to be compiled with BLK_DEV_INTEGRITY off.

    Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
    ---
    include/linux/blkdev.h | 6 ++++++
    1 files changed, 6 insertions(+), 0 deletions(-)

    diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
    index eec0842..ca08439 100644
    --- a/include/linux/blkdev.h
    +++ b/include/linux/blkdev.h
    @@ -1027,6 +1027,11 @@ static inline struct blk_integrity *bdev_get_integrity(struct block_device *bdev
    return bdev->bd_disk->integrity;
    }

    +static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
    +{
    + return disk->integrity;
    +}
    +
    static inline unsigned int bdev_get_tag_size(struct block_device *bdev)
    {
    struct blk_integrity *bi = bdev_get_integrity(bdev);
    @@ -1069,6 +1074,7 @@ static inline int blk_integrity_rq(struct request *rq)
    #define blk_rq_count_integrity_sg(a) (0)
    #define blk_rq_map_integrity_sg(a, b) (0)
    #define bdev_get_integrity(a) (0)
    +#define blk_get_integrity(a) (0)
    #define bdev_get_tag_size(a) (0)
    #define blk_integrity_compare(a, b) (0)
    #define blk_integrity_register(a, b) (0)
    --
    1.6.0.2


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