On 08/08/2017 02:32 PM, Shaohua Li wrote:
>> diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
>> index 25f6a0cb27d3..fae021ebec1b 100644
>> --- a/include/linux/blkdev.h
>> +++ b/include/linux/blkdev.h
>> @@ -633,6 +633,7 @@ struct request_queue {
>>  #define QUEUE_FLAG_REGISTERED  29   /* queue has been registered to a disk 
>> */
>>  #define QUEUE_FLAG_SCSI_PASSTHROUGH 30      /* queue supports SCSI commands 
>> */
>>  #define QUEUE_FLAG_QUIESCED    31   /* queue has been quiesced */
>> +#define QUEUE_FLAG_NOWAIT      32   /* stack device driver supports 
>> REQ_NOWAIT */

Does this work on 32-bit, where sizeof(unsigned long) == 32?

-- 
Jens Axboe

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