在 2021/8/25 下午9:28, Pavel Begunkov 写道:
On 8/25/21 12:40 PM, Hao Xu wrote:
It's not neccessary to free the request back to slab when we fail to
get sqe, just update state->free_reqs pointer.
It's a bit hackish because depends on the request being drawn
from the array in a particular way. How about returning it
It seems a req is always allocated from state->reqs, so it should be
ok? I actually didn't understand 'hackish' here, do you mean
io_submit_sqes() shouldn't move state->free_reqs which is req caches'
internal implementation?
into state->free_list. That thing is as cold as it can get,
only buggy apps can hit it.
