How to resolve short read ?

[Luooke6002]

I'm using iouring in my application for raw disk reads and writes. Reads and writes use separate file descriptors: reads use buffered I/O, while writes use direct I/O.
I've found that when reading data, sometimes the length of the data read is less than expected. How can I resolve this issue?

linux version: 5.10.0-1.0.0.39

[axboe]

Use a more recent kernel and you'll have a better time, also for short reads. 5.10 is ancient.

[Luooke6002]

Tks~