From: John Garry <[email protected]> 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 | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/lib/multipath.c b/lib/multipath.c index af90cf38a79d6..76b844d42813e 100644 --- a/lib/multipath.c +++ b/lib/multipath.c @@ -484,6 +484,26 @@ static int mpath_bdev_ioctl(struct block_device *bdev, blk_mode_t mode, return err; } +static int mpath_bdev_getgeo(struct gendisk *disk, struct hd_geometry *geo) +{ + struct mpath_head *mpath_head = mpath_gendisk_to_head(disk); + 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) { + if (mpath_device->disk->fops->getgeo) + ret = mpath_device->disk->fops->getgeo( + mpath_device->disk, geo); + else + ret = -ENOTTY; /* See blkdev_getgeo */ + } + srcu_read_unlock(&mpath_head->srcu, srcu_idx); + + return ret; +} + const struct block_device_operations mpath_ops = { .owner = THIS_MODULE, .open = mpath_bdev_open, @@ -495,6 +515,7 @@ const struct block_device_operations mpath_ops = { * avoid their custom compat_ioctl implementation. */ .compat_ioctl = blkdev_compat_ptr_ioctl, + .getgeo = mpath_bdev_getgeo, }; EXPORT_SYMBOL_GPL(mpath_ops); -- 2.43.7
