In btrfs_shrink_device, before btrfs_search_slot, path->reada is
set to READA_FORWARD. But I think READA_BACK is correct.
Since,
1.key.offset is set to (u64)-1
2.After btrfs_search_slot, btrfs_previous_item is called.
So, for readahead previous items, READA_BACK is correct one.
Signed-off-by: Gu Jinxiang <g...@cn.fujitsu.com>
---
fs/btrfs/volumes.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 292266f6ab9c..1a3506a3003d 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -4473,7 +4473,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64
new_size)
if (!path)
return -ENOMEM;
- path->reada = READA_FORWARD;
+ path->reada = READA_BACK;
mutex_lock(&fs_info->chunk_mutex);
--
1.9.1
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