diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/volumes.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index cc01abff03d..e0913e46972 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -148,7 +148,7 @@ static noinline int run_scheduled_bios(struct btrfs_device *device) unsigned long limit; unsigned long last_waited = 0; - bdi = device->bdev->bd_inode->i_mapping->backing_dev_info; + bdi = blk_get_backing_dev_info(device->bdev); fs_info = device->dev_root->fs_info; limit = btrfs_async_submit_limit(fs_info); limit = limit * 2 / 3; @@ -258,6 +258,18 @@ loop_lock: if (device->pending_bios) goto loop_lock; spin_unlock(&device->io_lock); + + /* + * IO has already been through a long path to get here. Checksumming, + * async helper threads, perhaps compression. We've done a pretty + * good job of collecting a batch of IO and should just unplug + * the device right away. + * + * This will help anyone who is waiting on the IO, they might have + * already unplugged, but managed to do so before the bio they + * cared about found its way down here. + */ + blk_run_backing_dev(bdi, NULL); done: return 0; } |