Re: [RFC PATCH V3 1/1] block: reject I/O for same fd if block size changed
From: Christoph Hellwig <hch@lst.de>
Date: 2021-01-04 17:12:55
Also in:
linux-block, lkml
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:quoted
+ 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?
Alternatively we could make this request_queue QUEUE* flag for now.