BLK_OPEN_RESTRICT_WRITES
if (mode & BLK_OPEN_RESTRICT_WRITES)
if (mode & BLK_OPEN_RESTRICT_WRITES && !holder)
if (mode & BLK_OPEN_RESTRICT_WRITES && bdev->bd_writers > 0)
if (mode & BLK_OPEN_RESTRICT_WRITES)
BLK_OPEN_READ | BLK_OPEN_WRITE | BLK_OPEN_RESTRICT_WRITES,
(BLK_OPEN_READ | BLK_OPEN_RESTRICT_WRITES | \