Re: [RFC PATCH V3 1/1] block: reject I/O for same fd if block size changed

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

 



Hello Christoph,

Thanks for your review.

On 21-01-04 18:11:41, Christoph Hellwig wrote:
> On Mon, Jan 04, 2021 at 06:11:08PM +0100, Christoph Hellwig wrote:
> > On Mon, Jan 04, 2021 at 10:06:59PM +0900, Minwoo Im wrote:
> > > +	if (q->backing_dev_info && q->backing_dev_info->owner &&
> > > +			limits->logical_block_size != size) {
> > > +		bdev = blkdev_get_no_open(q->backing_dev_info->owner->devt);
> > > +		bdev->bd_disk->flags |= GENHD_FL_BLOCK_SIZE_CHANGED;
> > > +		blkdev_put_no_open(bdev);
> > > +	}
> > 
> > We really need the backpointer from the queue to the gendisk I've wanted
> > to add for a while.  Can we at least restrict this to a live gendisk?

It was a point that I really would like to ask by RFC whether we can
have backpointer to the gendisk from the request_queue.  And I'd like to
have it to simplify this routine and for future usages also.

I will restrict this one by checking GENHD_FL_UP flag from the gendisk
for the next patch.

> 
> Alternatively we could make this request_queue QUEUE* flag for now.

As this patch rejects I/O from the block layer partition code, can we
have this flag in gendisk rather than request_queue ?

Thanks,



[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux