On Tue, Aug 11, 2026 at 03:32:36PM +0200, Niklas Cassel wrote: > In the ZBC and ZAC specifications, the requirement is that the write > granularity matches the physical block size. > > However, in the ZNS specification, the requirement is simply that the > write granularity matches the logical block size. > > See: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a805a4fa4fa376bbc145762bb8b09caa2fa8af48 > > In Linux, there is a zone_write_granularity sysfs property which abstracts > this away, so let's make use of it. > > Currently, it is theoretically possible that QEMU presents an inflated > write granularity for NVMe devices where the physical block size is larger > than the logical block size. > > Reviewed-by: Damien Le Moal <[email protected]> > Fixes: a3c41f06d5a8 ("file-posix: add tracking of the zone write pointers") > Signed-off-by: Niklas Cassel <[email protected]> > --- > Changes since v1: > -Improved commit log. > -Picked up tag. > > block/file-posix.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Stefan Hajnoczi <[email protected]>
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