From: John Garry <[email protected]> Add a multipath handler for block_device_operations.report_zones
Signed-off-by: John Garry <[email protected]> --- lib/multipath.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/lib/multipath.c b/lib/multipath.c index 3ff4f42a096c2..0232f51f64742 100644 --- a/lib/multipath.c +++ b/lib/multipath.c @@ -44,6 +44,30 @@ int mpath_get_iopolicy(char *buf, int iopolicy) } EXPORT_SYMBOL_GPL(mpath_get_iopolicy); +#ifdef CONFIG_BLK_DEV_ZONED +static int mpath_bdev_report_zones(struct gendisk *disk, sector_t sector, + unsigned int nr_zones, struct blk_report_zones_args *args) +{ + struct mpath_head *mpath_head = mpath_gendisk_to_head(disk); + struct mpath_device *mpath_device; + int srcu_idx, ret = -EWOULDBLOCK; + + srcu_idx = srcu_read_lock(&mpath_head->srcu); + mpath_device = mpath_find_path(mpath_head); + if (mpath_device) { + if (mpath_device->disk->fops->report_zones) + ret = mpath_device->disk->fops->report_zones + (mpath_device->disk, sector, nr_zones, args); + else + ret = -EOPNOTSUPP; + } + srcu_read_unlock(&mpath_head->srcu, srcu_idx); + return ret; +} +#else +#define mpath_bdev_report_zones NULL +#endif /* CONFIG_BLK_DEV_ZONED */ + void mpath_synchronize(struct mpath_head *mpath_head) { synchronize_srcu(&mpath_head->srcu); @@ -459,6 +483,7 @@ const struct block_device_operations mpath_ops = { .open = mpath_bdev_open, .release = mpath_bdev_release, .submit_bio = mpath_bdev_submit_bio, + .report_zones = mpath_bdev_report_zones, }; EXPORT_SYMBOL_GPL(mpath_ops); -- 2.43.7
