xfs: expose the number of open zones in sysfs

Add a sysfs attribute for the current number of open zones so that it
can be trivially read from userspace in monitoring or testing software.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
This commit is contained in:
Christoph Hellwig 2026-03-31 17:27:30 +02:00 • committed by Carlos Maiolino
commit 62c89988dc
2 changed files with 17 additions and 0 deletions