Re: [PATCH 12/13] btrfs: use blkdev_report_zones_cached()

David Sterba
2025-10-31T19:01:54Z

On Fri, Oct 31, 2025 at 03:13:06PM +0900, Damien Le Moal wrote:
> Modify btrfs_get_dev_zones() and btrfs_sb_log_location_bdev() to replace
> the call to blkdev_report_zones() with blkdev_report_zones_cached() to
> speed-up mount operations. btrfs_get_dev_zone_info() is also modified to
> take into account the BLK_ZONE_COND_ACTIVE condition, which is
> equivalent to either BLK_ZONE_COND_IMP_OPEN, BLK_ZONE_COND_EXP_OPEN or
> BLK_ZONE_COND_CLOSED.
>
> With this change, mounting a freshly formatted large capacity (30 TB)
> SMR HDD completes under 100ms compared to over 1.8s before.
>
> Signed-off-by: Damien Le Moal <dlemoal@kernel.org>

Acked-by: David Sterba <dsterba@suse.com>