Commit d8e88d99 authored by Seth Howell's avatar Seth Howell Committed by Jim Harris
Browse files

nvme_ns: add function to get read value of unmapped blocks 



Change-Id: I52dc3038d239661421760ceccfbbf841cc63a18a
Signed-off-by: default avatarSeth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/372000


Tested-by: default avatarSPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
parent c6dc4d18

include/spdk/nvme.h

+9 −0
Original line number Diff line number Diff line
@@ -910,6 +910,15 @@ uint32_t spdk_nvme_ns_get_md_size(struct spdk_nvme_ns *ns); 
 */

bool spdk_nvme_ns_supports_extended_lba(struct spdk_nvme_ns *ns);



/**

 * \brief Determine the value returned when reading deallocated blocks.

 *

 * If deallocated blocks return 0, the deallocate command can be used as a more efficient alternative

 * to the write_zeroes command, especially for large requests.

 */

enum spdk_nvme_dealloc_logical_block_read_value spdk_nvme_ns_get_dealloc_logical_block_read_value(

	struct spdk_nvme_ns *ns);



/**

 * \brief Namespace command support flags.

 */

lib/nvme/nvme_ns.c

+7 −0
Original line number Diff line number Diff line
@@ -185,6 +185,13 @@ spdk_nvme_ns_get_data(struct spdk_nvme_ns *ns) 
	return _nvme_ns_get_data(ns);

}



enum spdk_nvme_dealloc_logical_block_read_value spdk_nvme_ns_get_dealloc_logical_block_read_value(

	struct spdk_nvme_ns *ns)

{

	const struct spdk_nvme_ns_data *data = spdk_nvme_ns_get_data(ns);

	return data->dlfeat.bits.read_value;

}



int nvme_ns_construct(struct spdk_nvme_ns *ns, uint16_t id,

		      struct spdk_nvme_ctrlr *ctrlr)

{