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-rw-r--r--fs/btrfs/btrfs_inode.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 81c0444f37b..3bf40591742 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -32,6 +32,7 @@ struct btrfs_inode {
struct extent_io_tree io_tree;
struct extent_io_tree io_failure_tree;
struct mutex csum_mutex;
+ struct mutex extent_mutex;
struct inode vfs_inode;
struct btrfs_ordered_inode_tree ordered_tree;