Re: Unclear documentation about IORING_OP_READ

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On 9/1/20 6:51 AM, Shuveb Hussain wrote:
> Hello,
> 
>> This is intended behavior, you should consider the READV to be just
>> like preadv2() in that it takes the offset/iov/flags, and ditto on
>> the write side. READ is basically what a pread2 would be, if it
>> existed.
>>
>> That said, you can use off == -1 if IORING_FEAT_RW_CUR_POS is set
>> in the feature flags upon ring creation, and that'll use (and updated)
>> the current file offset. This works for any non-stream/pipe file
>> type.
>>
> 
> That clarifies it. Thanks, Jens.

Great! BTW, thanks for working on the io_uring(7) man page, I'm pretty
excited about that.

-- 
Jens Axboe




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