On Fri, May 05, 2023 at 01:51:28PM -0400, Christoph Hellwig wrote: > Add a new blk_holder_ops structure, which is passed to blkdev_get_by_* and > installed in the block_device for exclusive claims. It will be used to > allow the block layer to call back into the user of the block device for > thing like notification of a removed device or a device resize. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > --- Looks good to me, Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx> Looking at this code reminds me that we'll need a block dev lookup function that takes a diskseq argument so we can lookup a block device and check it against the diskseq number we provided so we can detect "media" changes (images on a loop device etc). Idea being to pass diskseq numbers via fsconfig().
