Re: [PATCH v3 14/15] btrfs: use blkdev_report_zones_cached()

[Hannes Reinecke <hare@suse.de>]

On 11/4/25 02:31, 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>
> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
> ---
>   fs/btrfs/zoned.c | 11 ++++++-----
>   1 file changed, 6 insertions(+), 5 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@suse.de                                +49 911 74053 688
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