On Tue, Apr 20, 2021 at 07:40:37AM +0000, Johannes Thumshirn wrote: > On 19/04/2021 19:13, David Sterba wrote: > > On Mon, Apr 19, 2021 at 04:41:00PM +0900, Johannes Thumshirn wrote: > >> When relocating a block group the freed up space is not discarded in one > >> big block, but each extent is discarded on it's own with -odisard=sync. > >> > >> For a zoned filesystem we need to discard the whole block group at once, > >> so btrfs_discard_extent() will translate the discard into a > >> REQ_OP_ZONE_RESET operation, which then resets the device's zone. > >> > >> Link: > >> https://lore.kernel.org/linux-btrfs/459e2932c48e12e883dcfd3dda828d9da251d5b5.1617962110.git.johannes.thumsh...@wdc.com > > > > The link points to the same patch in v3, is there something missing in > > this patch that should be added to the changelog? > > > > I included this link so one can look up the discussion between Filipe and > me that lead to this decision. But I guess this is not really relevant.
So what'd recommend and expect is to put a summary of the discussion to the changelog, because the discussions can take many mails and the contents is scattered, and link the first relevant mail in case the full story could be interesting. Eventually the link could be in text with some hint what to look for in the mail.
