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bdev: introduce unmap attributes to bdev layer

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The backend device module can report such capabilities
to the bdev layer, and we can split unmap request into
multiple children requests in the bdev layer.

Change-Id: I81daf7e58b797a2673ef102f2a037de20771092e
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7515
Community-CI: Broadcom CI
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
This commit is contained in:
Changpeng Liu 2021-04-20 18:05:33 +08:00 committed by Tomasz Zawadzki
parent 518d28dba9
commit f6d5b9cd92
1 changed files with 6 additions and 0 deletions
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6
include/spdk/bdev_module.h
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@ -343,6 +343,12 @@ struct spdk_bdev {
/* Maximum number of segments in a I/O */
uint32_t max_num_segments;
/* Maximum unmap in unit of logical block */
uint32_t max_unmap;
/* Maximum unmap block segments */
uint32_t max_unmap_segments;
/**
* UUID for this bdev.
*