nvme: support ranged discard requests

[linux-block.git] / include / linux / nvme.h

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 3d1c6f1b15c9bd351fa04d4e9824ff83b5c0045a..3e2ed49c3ad8b54894ffc5e8cfa028d27930581d 100644 (file)
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -553,6 +553,8 @@ enum {
        NVME_DSMGMT_AD          = 1 << 2,
 };
 
+#define NVME_DSM_MAX_RANGES    256
+
 struct nvme_dsm_range {
        __le32                  cattr;
        __le32                  nlb;