Merge tag 'io_uring-5.12-2021-04-03' of git://git.kernel.dk/linux-block

[linux-2.6-microblaze.git] / include / linux / device-mapper.h

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 7f4ac87..5c641f9 100644 (file)
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -253,7 +253,11 @@ struct target_type {
 #define dm_target_passes_integrity(type) ((type)->features & DM_TARGET_PASSES_INTEGRITY)
 
 /*
- * Indicates that a target supports host-managed zoned block devices.
+ * Indicates support for zoned block devices:
+ * - DM_TARGET_ZONED_HM: the target also supports host-managed zoned
+ *   block devices but does not support combining different zoned models.
+ * - DM_TARGET_MIXED_ZONED_MODEL: the target supports combining multiple
+ *   devices with different zoned models.
  */
 #ifdef CONFIG_BLK_DEV_ZONED
 #define DM_TARGET_ZONED_HM             0x00000040
@@ -275,6 +279,15 @@ struct target_type {
 #define DM_TARGET_PASSES_CRYPTO                0x00000100
 #define dm_target_passes_crypto(type) ((type)->features & DM_TARGET_PASSES_CRYPTO)
 
+#ifdef CONFIG_BLK_DEV_ZONED
+#define DM_TARGET_MIXED_ZONED_MODEL    0x00000200
+#define dm_target_supports_mixed_zoned_model(type) \
+       ((type)->features & DM_TARGET_MIXED_ZONED_MODEL)
+#else
+#define DM_TARGET_MIXED_ZONED_MODEL    0x00000000
+#define dm_target_supports_mixed_zoned_model(type) (false)
+#endif
+
 struct dm_target {
        struct dm_table *table;
        struct target_type *type;