Re: [PATCH 19/26] block: move the nowait flag to queue_limits

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 6/11/24 2:19 PM, Christoph Hellwig wrote:
> Move the nowait flag into the queue_limits feature field so that it
> can be set atomically and all I/O is frozen when changing the flag.
> 
> Stacking drivers are simplified in that they now can simply set the
> flag, and blk_stack_limits will clear it when the features is not
> supported by any of the underlying devices.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>


> @@ -1825,9 +1815,7 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
>  	int r;
>  
>  	if (dm_table_supports_nowait(t))
> -		blk_queue_flag_set(QUEUE_FLAG_NOWAIT, q);
> -	else
> -		blk_queue_flag_clear(QUEUE_FLAG_NOWAIT, q);
> +		limits->features &= ~BLK_FEAT_NOWAIT;

Shouldn't you set the flag here instead of clearing it ?

-- 
Damien Le Moal
Western Digital Research





[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]

  Powered by Linux