diff options
| -rw-r--r-- | fs/btrfs/disk-io.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index e070e463ad8b..ba7bd65693a3 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3518,9 +3518,13 @@ static void btrfs_end_empty_barrier(struct bio *bio) */ static int write_dev_flush(struct btrfs_device *device, int wait) { + struct request_queue *q = bdev_get_queue(device->bdev); struct bio *bio; int ret = 0; + if (!test_bit(QUEUE_FLAG_WC, &q->queue_flags)) + return 0; + if (wait) { bio = device->flush_bio; if (!bio) |