block: Consolidate static integrity profile properties
We previously made a complete copy of a device's data integrity profile
even though several of the fields inside the blk_integrity struct are
pointers to fixed template entries in t10-pi.c.
Split the static and per-device portions so that we can reference the
template directly.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reported-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 830f9c0..f36c6476 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1462,16 +1462,18 @@
typedef int (integrity_processing_fn) (struct blk_integrity_iter *);
+struct blk_integrity_profile {
+ integrity_processing_fn *generate_fn;
+ integrity_processing_fn *verify_fn;
+ const char *name;
+};
+
struct blk_integrity {
- integrity_processing_fn *generate_fn;
- integrity_processing_fn *verify_fn;
-
- unsigned short flags;
- unsigned short tuple_size;
- unsigned short interval;
- unsigned short tag_size;
-
- const char *name;
+ struct blk_integrity_profile *profile;
+ unsigned short flags;
+ unsigned short tuple_size;
+ unsigned short interval;
+ unsigned short tag_size;
};
extern bool blk_integrity_is_initialized(struct gendisk *);
diff --git a/include/linux/t10-pi.h b/include/linux/t10-pi.h
index 6a8b994..dd8de82 100644
--- a/include/linux/t10-pi.h
+++ b/include/linux/t10-pi.h
@@ -14,9 +14,9 @@
};
-extern struct blk_integrity t10_pi_type1_crc;
-extern struct blk_integrity t10_pi_type1_ip;
-extern struct blk_integrity t10_pi_type3_crc;
-extern struct blk_integrity t10_pi_type3_ip;
+extern struct blk_integrity_profile t10_pi_type1_crc;
+extern struct blk_integrity_profile t10_pi_type1_ip;
+extern struct blk_integrity_profile t10_pi_type3_crc;
+extern struct blk_integrity_profile t10_pi_type3_ip;
#endif