Add mpath_bdev_getgeo() as a multipath block device .getgeo handler. Here we just redirect into the selected mpath_device disk fops->getgeo handler.
Signed-off-by: John Garry <[email protected]> --- lib/multipath.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/lib/multipath.c b/lib/multipath.c index 537579ad5989e..192ecd886b958 100644 --- a/lib/multipath.c +++ b/lib/multipath.c @@ -536,6 +536,22 @@ __releases(&mpath_head->srcu) } EXPORT_SYMBOL_GPL(mpath_head_read_unlock); +static int mpath_bdev_getgeo(struct gendisk *disk, struct hd_geometry *geo) +{ + struct mpath_disk *mpath_disk = mpath_gendisk_to_disk(disk); + struct mpath_head *mpath_head = mpath_disk->mpath_head; + int srcu_idx, ret = -EWOULDBLOCK; + struct mpath_device *mpath_device; + + srcu_idx = srcu_read_lock(&mpath_head->srcu); + mpath_device = mpath_find_path(mpath_head); + if (mpath_device) + ret = mpath_device->disk->fops->getgeo(mpath_device->disk, geo); + srcu_read_unlock(&mpath_head->srcu, srcu_idx); + + return ret; +} + static int mpath_pr_register(struct block_device *bdev, u64 old_key, u64 new_key, unsigned int flags) { @@ -689,6 +705,7 @@ const struct block_device_operations mpath_ops = { .ioctl = mpath_bdev_ioctl, .compat_ioctl = blkdev_compat_ptr_ioctl, .report_zones = mpath_bdev_report_zones, + .getgeo = mpath_bdev_getgeo, .pr_ops = &mpath_pr_ops, }; EXPORT_SYMBOL_GPL(mpath_ops); -- 2.43.5
