diff options
| -rw-r--r-- | fs/btrfs/reada.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index 30947f923620..09230cf3a244 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -428,8 +428,13 @@ static struct reada_extent *reada_find_extent(struct btrfs_root *root, continue; } if (!dev->bdev) { - /* cannot read ahead on missing device */ - continue; + /* + * cannot read ahead on missing device, but for RAID5/6, + * REQ_GET_READ_MIRRORS return 1. So don't skip missing + * device for such case. + */ + if (nzones > 1) + continue; } if (dev_replace_is_ongoing && dev == fs_info->dev_replace.tgtdev) { |