[PATCH] netfs: Fix setting of BDP_ASYNC from iocb flags

Jens Axboe axboe at kernel.dk
Tue May 21 09:04:59 PDT 2024


On 5/21/24 9:54 AM, David Howells wrote:
> Jens Axboe <axboe at kernel.dk> wrote:
> 
>> However, I'll note that BDP_ASYNC is horribly named, it should be
>> BDP_NOWAIT instead. But that's a separate thing, fix looks correct
>> as-is.
> 
> I thought IOCB_NOWAIT was related to RWF_NOWAIT, but apparently not from the
> code.

It is, something submitted with RWF_NOWAIT should have IOCB_NOWAIT set.
But RWF_NOWAIT isn't the sole user of IOCB_NOWAIT, and no assumptions
should be made about whether something is sync or async based on whether
or not RWF_NOWAIT is set. Those aren't related other than _some_ proper
async IO will have IOCB_NOWAIT set, and others will not.

-- 
Jens Axboe




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