virtio::blk::BlkDiscardWriteZeroes Struct Reference

Discard/Write Zeroes/Secure Erase 请求段 More...

#include <virtio_blk_defs.h>

Collaboration diagram for virtio::blk::BlkDiscardWriteZeroes:

Public Attributes
uint64_t	sector
	起始扇区（以 512 字节为单位）
uint32_t	num_sectors
	扇区数（以 512 字节为单位）
struct {
uint32_t   unmap: 1
uint32_t   reserved: 31
	保留位，必须为 0 More...
}	flags
	标志位

Detailed Description

Discard/Write Zeroes/Secure Erase 请求段

See also

virtio-v1.2#5.2.6

VIRTIO_BLK_T_DISCARD、VIRTIO_BLK_T_WRITE_ZEROES 和 VIRTIO_BLK_T_SECURE_ERASE 请求的数据部分由一个或多个此结构的实例组成。

Definition at line 225 of file virtio_blk_defs.h.

Member Data Documentation

[struct]

struct { ... } virtio::blk::BlkDiscardWriteZeroes::flags

标志位

num_sectors

uint32_t virtio::blk::BlkDiscardWriteZeroes::num_sectors

扇区数（以 512 字节为单位）

Definition at line 229 of file virtio_blk_defs.h.

reserved

uint32_t virtio::blk::BlkDiscardWriteZeroes::reserved

保留位，必须为 0

Definition at line 236 of file virtio_blk_defs.h.

sector

uint64_t virtio::blk::BlkDiscardWriteZeroes::sector

起始扇区（以 512 字节为单位）

Definition at line 227 of file virtio_blk_defs.h.

unmap

uint32_t virtio::blk::BlkDiscardWriteZeroes::unmap

对于 write zeroes: 允许设备 unmap（取消映射）指定范围 对于 discard/secure erase: 保留，必须为 0

Definition at line 234 of file virtio_blk_defs.h.

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The documentation for this struct was generated from the following file:

• /workspaces/SimpleKernel/src/device/virtio/device/blk/virtio_blk_defs.h