On Thu, 2020-03-12 at 08:06 -0600, Jens Axboe wrote: > > On 3/2/20 9:03 PM, Singh, Balbir wrote: > > On Tue, 2020-02-25 at 20:01 +0000, Balbir Singh wrote: > > > Allow block/genhd to notify user space about disk size changes using a > > > new helper set_capacity_revalidate_and_notify(), which is a wrapper > > > on top of set_capacity(). set_capacity_revalidate_and_notify() will only > > > notify > > > iff the current capacity or the target capacity is not zero and the > > > capacity really changes. > > > > > > Background: > > > > > > As a part of a patch to allow sending the RESIZE event on disk capacity > > > change, Christoph (hch@xxxxxx) requested that the patch be made generic > > > and the hacks for virtio block and xen block devices be removed and > > > merged via a generic helper. > > > > > > This series consists of 5 changes. The first one adds the basic > > > support for changing the size and notifying. The follow up patches > > > are per block subsystem changes. Other block drivers can add their > > > changes as necessary on top of this series. Since not all devices > > > are resizable, the default was to add a new API and let users > > > slowly convert over as needed. > > > > > > Testing: > > > 1. I did some basic testing with an NVME device, by resizing it in > > > the backend and ensured that udevd received the event. > > > > > > > > > Changelog v2: > > > - Rename disk_set_capacity to set_capacity_revalidate_and_notify > > > - set_capacity_revalidate_and_notify can call revalidate disk > > > if needed, a new bool parameter is passed (suggested by Bob Liu) > > > > > > > Ping? It's not an urgent patchset, I am happy to wait if nothing else is > > needed. > > It doesn't apply to the 5.7 branches, can you resend against for-5.7/block? > Thanks, I'll take a look. I used the latest next (next-20200312) and rebased on it. I got a three way merge success on xen-blkfront Using index info to reconstruct a base tree... M drivers/block/xen-blkfront.c Falling back to patching base and 3-way merge... I presume you are running into the same thing. I will resend the patches on top of next shortly Balbir
