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Commit 06d9c290 authored by Ezequiel Garcia's avatar Ezequiel Garcia Committed by Artem Bityutskiy
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UBI: block: Add support for the UBI_VOLUME_UPDATED notification 



Static volumes can change its 'used_bytes' when they get updated,
and so the block interface must listen to the UBI_VOLUME_UPDATED
notification to resize the block device accordingly.

Signed-off-by: default avatarEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@vger.kernel.org # v3.15+
parent 978d6496

drivers/mtd/ubi/block.c

+14 −2
Original line number Diff line number Diff line
@@ -524,8 +524,12 @@ static int ubiblock_resize(struct ubi_volume_info *vi) 
	}



	mutex_lock(&dev->dev_mutex);



	if (get_capacity(dev->gd) != disk_capacity) {

		set_capacity(dev->gd, disk_capacity);

	ubi_msg("%s resized to %lld bytes", dev->gd->disk_name, vi->used_bytes);

		ubi_msg("%s resized to %lld bytes", dev->gd->disk_name,

			vi->used_bytes);

	}

	mutex_unlock(&dev->dev_mutex);

	mutex_unlock(&devices_mutex);

	return 0;
@@ -549,6 +553,14 @@ static int ubiblock_notify(struct notifier_block *nb, 
	case UBI_VOLUME_RESIZED:

		ubiblock_resize(&nt->vi);

		break;

	case UBI_VOLUME_UPDATED:

		/*

		 * If the volume is static, a content update might mean the

		 * size (i.e. used_bytes) was also changed.

		 */

		if (nt->vi.vol_type == UBI_STATIC_VOLUME)

			ubiblock_resize(&nt->vi);

		break;

	default:

		break;

	}