#15569: usb_disk stalls & unmounts when large I/O transfers are not queued
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Reporter: X512 | Owner: nobody
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: Drivers/Disk/USB | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by waddlesplash):
It appears our SCSI layer exports B_DMA_MAX_TRANSFER_BLOCKS:
https://xref.landonf.org/source/xref/haiku/src/add-
ons/kernel/bus_managers/scsi/devices.cpp#133
Which is handled by DMAResource:
https://xref.landonf.org/source/xref/haiku/src/system/kernel/device_manager/dma_resources.cpp#134
usb_disk, however, does not use DMAResource, and even if it used the SCSI
stack it probably would bypass DMAResource anyway.
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Ticket URL: <https://dev.haiku-os.org/ticket/15569#comment:16>
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