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Limit the number of segments in single bio request

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This commit is contained in:
LI Qing
2024-06-04 16:26:36 +08:00
committed by Tate, Hongliang Tian
parent a883b65187
commit c6aa9f9ee8
6 changed files with 51 additions and 2 deletions
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10
kernel/comps/virtio/src/device/block/device.rs
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@ -43,7 +43,11 @@ impl BlockDevice {
let block_device = Arc::new(Self {
device,
queue: BioRequestSingleQueue::new(),
// Each bio request includes an additional 1 request and 1 response descriptor,
// therefore this upper bound is set to (QUEUE_SIZE - 2).
queue: BioRequestSingleQueue::with_max_nr_segments_per_bio(
(DeviceInner::QUEUE_SIZE - 2) as usize,
),
});
aster_block::register_device(device_id, block_device);
@ -74,6 +78,10 @@ impl aster_block::BlockDevice for BlockDevice {
fn enqueue(&self, bio: SubmittedBio) -> Result<(), BioEnqueueError> {
self.queue.enqueue(bio)
}
fn max_nr_segments_per_bio(&self) -> usize {
self.queue.max_nr_segments_per_bio()
}
}
#[derive(Debug)]