[PATCH 16/17] xfs: log a message at mount time when using integrity protection

[Christoph Hellwig <hch@lst.de>]

Log a message in the kernel when using T10 protection information.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
---
 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 ee7c2e9c0340..eee491c01d8c 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"
@@ -1694,6 +1695,7 @@ 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);
@@ -1706,6 +1708,15 @@ 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