Re: [PATCH 22/22] xfs: log a message at mount time when using integrity protection

["Darrick J. Wong" <djwong@kernel.org>]

On Thu, Jul 23, 2026 at 04:49:47PM +0200, Christoph Hellwig wrote:
> Log a message in the kernel when using T10 protection information.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Do these new log messages show up for any PI-capable device?  So if I
put the log on a PI blockdev, it'll say "Using arglebargle integrity
profile for /dev/sda" ?

The code looks ok to me so

Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>

--D

> ---
>  fs/xfs/xfs_buf.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
> index e1465e950acc..744e4a94a879 100644
> --- a/fs/xfs/xfs_buf.c
> +++ b/fs/xfs/xfs_buf.c
> @@ -5,6 +5,7 @@
>   */
>  #include "xfs_platform.h"
>  #include <linux/backing-dev.h>
> +#include <linux/blk-integrity.h>
>  #include <linux/dax.h>
>  
>  #include "xfs_shared.h"
> @@ -1674,6 +1675,7 @@ xfs_configure_buftarg(
>  	struct xfs_mount	*mp = btp->bt_mount;
>  
>  	if (btp->bt_bdev) {
> +		struct blk_integrity *bi = bdev_get_integrity(btp->bt_bdev);
>  		int		error;
>  
>  		error = bdev_validate_blocksize(btp->bt_bdev, sectorsize);
> @@ -1686,6 +1688,15 @@ xfs_configure_buftarg(
>  
>  		if (bdev_can_atomic_write(btp->bt_bdev))
>  			xfs_configure_buftarg_atomic_writes(btp);
> +
> +		if (!bi)
> +			;
> +		else if (btp->bt_bdev == btp->bt_mount->m_super->s_bdev)
> +			xfs_info(mp, "using %s integrity profile",
> +				blk_integrity_profile_name(bi));
> +		else
> +			xfs_info(mp, "using %s integrity profile for %pg",
> +				blk_integrity_profile_name(bi), btp->bt_bdev);
>  	}
>  
>  	btp->bt_meta_sectorsize = sectorsize;
> -- 
> 2.53.0
> 
>