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-rw-r--r--fs/btrfs/extent-tree.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0617cb73669d..83fc61db0e45 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -543,11 +543,13 @@ static noinline void caching_thread(struct btrfs_work *work)
struct btrfs_block_group_cache *block_group;
struct btrfs_fs_info *fs_info;
struct btrfs_caching_control *caching_ctl;
+ struct btrfs_root *extent_root;
int ret;
caching_ctl = container_of(work, struct btrfs_caching_control, work);
block_group = caching_ctl->block_group;
fs_info = block_group->fs_info;
+ extent_root = fs_info->extent_root;
mutex_lock(&caching_ctl->mutex);
down_read(&fs_info->commit_root_sem);