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Revise the BlockDevice trait

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This commit is contained in:
Shaowei Song
2024-07-18 11:45:38 +00:00
committed by Tate, Hongliang Tian
parent e83e1fc01b
commit ff525112d0
5 changed files with 71 additions and 8 deletions
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15
kernel/comps/block/src/lib.rs
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@ -56,8 +56,19 @@ pub const SECTOR_SIZE: usize = 512;
pub trait BlockDevice: Send + Sync + Any + Debug {
/// Enqueues a new `SubmittedBio` to the block device.
fn enqueue(&self, bio: SubmittedBio) -> Result<(), BioEnqueueError>;
/// Returns the upper limit for the number of segments per bio.
fn max_nr_segments_per_bio(&self) -> usize;
/// Returns the metadata of the block device.
fn metadata(&self) -> BlockDeviceMeta;
}
/// Metadata for a block device.
#[derive(Debug, Clone, Copy)]
pub struct BlockDeviceMeta {
/// The upper limit for the number of segments per bio.
pub max_nr_segments_per_bio: usize,
/// The total number of sectors of the block device.
pub nr_sectors: usize,
// Additional useful metadata can be added here in the future.
}
impl dyn BlockDevice {