Re: [PATCH V5 17/30] fs: use read_iter and write_iter rather than aio_read and aio_write

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On 01/18/2013 03:26 PM, Jeff Moyer wrote:
> Dave Kleikamp <dave.kleikamp@xxxxxxxxxx> writes:
> 
>> @@ -1315,10 +1317,10 @@ static ssize_t aio_rw_vect_retry(struct kiocb *iocb)
>>  
>>  	if ((iocb->ki_opcode == IOCB_CMD_PREADV) ||
>>  		(iocb->ki_opcode == IOCB_CMD_PREAD)) {
>> -		rw_op = file->f_op->aio_read;
>> +		rw_op = do_aio_read;
>>  		opcode = IOCB_CMD_PREADV;
>>  	} else {
>> -		rw_op = file->f_op->aio_write;
>> +		rw_op = do_aio_read;
>>  		opcode = IOCB_CMD_PWRITEV;
>>  	}
> 
> That wants to be rw_op = do_aio_write in the else clause.  How did you
> test this patch set?

Yep, that's certainly a bug. I concentrated on testing on loop mounts,
running some fio and ltp testcases, but I'm at a loss to explain how
things seem to work as well as they do. Let's see how where fixing this
leads.

Thanks!
Shaggy

> Cheers,
> Jeff
> 
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