70a0bc3096
First, improve packing of spdk_bdev_io. Move any fields which must be zeroed into the first cacheline. Also change type and status from enums (needing 4 bytes) to int16_t which is still a far bigger range than needed. Next, modify spdk_bdev_get_io to only zero the first cacheline (actually a bit less). SPDK_BDEV_IO_TYPE_INVALID is also added, making it explicit that 0 is an invalid value for the IO type. Previously this was somewhat inferred. There are still additional improvements that can be made to this area - primarily combining spdk_bdev_get_io() and spdk_bdev_io_init() into a single function. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: I1916d6d5db02c93622b9725ec1095148e3f384d8 Reviewed-on: https://review.gerrithub.io/377799 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com> |
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| spdk | ||
| spdk_internal | ||