Commit 811a027e authored by Kozlowski Mateusz's avatar Kozlowski Mateusz Committed by Jim Harris
Browse files

ftl: Add helper functions for creating md regions 



Helper functions which determine which md regions will be stored
in shm.

Signed-off-by: default avatarKozlowski Mateusz <mateusz.kozlowski@intel.com>
Change-Id: I94cbfca66dfb56457a350874dbd1de63a2e07661
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14159


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
parent 101a0399

lib/ftl/mngt/ftl_mngt_md.c

+2 −3
Original line number Diff line number Diff line
@@ -62,9 +62,8 @@ ftl_mngt_init_md(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt) 
			 */

			continue;

		}

		md_flags = is_buffer_needed(i) ?

			   FTL_MD_CREATE_SHM | FTL_MD_CREATE_SHM_NEW :

			   FTL_MD_CREATE_NO_MEM;

		md_flags = is_buffer_needed(i) ? ftl_md_create_region_flags(dev,

				region->type) : FTL_MD_CREATE_NO_MEM;

		layout->md[i] = ftl_md_create(dev, region->current.blocks, region->vss_blksz, region->name,

					      md_flags, region);

		if (NULL == layout->md[i]) {

lib/ftl/mngt/ftl_mngt_misc.c

+1 −1
Original line number Diff line number Diff line
@@ -30,7 +30,7 @@ init_p2l_map_pool(struct spdk_ftl_dev *dev) 
	void *p2l_pool_buf;



	dev->p2l_pool_md = ftl_md_create(dev, p2l_pool_buf_blks, 0, "p2l_pool",

					 FTL_MD_CREATE_SHM | FTL_MD_CREATE_SHM_NEW, NULL);

					 ftl_md_create_shm_flags(dev), NULL);

	if (!dev->p2l_pool_md) {

		return -ENOMEM;

	}

lib/ftl/utils/ftl_md.c

+31 −0
Original line number Diff line number Diff line
@@ -1100,3 +1100,34 @@ ftl_md_set_region(struct ftl_md *md, 


	return 0;

}



int

ftl_md_create_region_flags(struct spdk_ftl_dev *dev, int region_type)

{

	int flags = FTL_MD_CREATE_SHM;



	switch (region_type) {

	case FTL_LAYOUT_REGION_TYPE_SB:

		if (dev->conf.mode & SPDK_FTL_MODE_CREATE) {

			flags |= FTL_MD_CREATE_SHM_NEW;

		}

		break;



	case FTL_LAYOUT_REGION_TYPE_BAND_MD:

	case FTL_LAYOUT_REGION_TYPE_NVC_MD:

		flags |= FTL_MD_CREATE_SHM_NEW;

		break;

	default:

		return FTL_MD_CREATE_HEAP;

	}



	return flags;

}



int

ftl_md_create_shm_flags(struct spdk_ftl_dev *dev)

{

	int flags = FTL_MD_CREATE_SHM | FTL_MD_CREATE_SHM_NEW;



	return flags;

}

lib/ftl/utils/ftl_md.h

+27 −0
Original line number Diff line number Diff line
@@ -321,4 +321,31 @@ void ftl_md_clear(struct ftl_md *md, int pattern, union ftl_md_vss *vss_pattern) 
 */

uint64_t ftl_md_xfer_blocks(struct spdk_ftl_dev *dev);



/**

 * @brief Return the md creation flags for a given md region type

 *

 * Controls MD regions backed up on SHM via FTL_MD_CREATE_SHM.

 * FTL_MD_CREATE_SHM_NEW is added for:

 * 1. superblock upon SPDK_FTL_MODE_CREATE flag set,

 * 2. other regions if not in a fast startup mode.

 *

 * @param dev			The FTL device

 * @param region_type	MD region type

 *

 * @return MD creation flags

 */

int ftl_md_create_region_flags(struct spdk_ftl_dev *dev, int region_type);



/**

 * @brief Return the SHM-backed md creation flags

 *

 * FTL_MD_CREATE_SHM is always set.

 * FTL_MD_CREATE_SHM_NEW is added if not in a fast startup mode.

 *

 * @param dev	The FTL device

 *

 * @return MD creation flags

 */

int ftl_md_create_shm_flags(struct spdk_ftl_dev *dev);



#endif /* FTL_MD_H */