wrappers for ->i_mutex access

parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
inode_foo(inode) being mutex_foo(&inode->i_mutex).

Please, use those for access to ->i_mutex; over the coming cycle
->i_mutex will become rwsem, with ->lookup() done with it held
only shared.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index ef6d8fc85853..fd1c4d982463 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3030,7 +3030,7 @@ int prealloc_file_extent_cluster(struct inode *inode,
 	int ret = 0;
 
 	BUG_ON(cluster->start != cluster->boundary[0]);
-	mutex_lock(&inode->i_mutex);
+	inode_lock(inode);
 
 	ret = btrfs_check_data_free_space(inode, cluster->start,
 					  cluster->end + 1 - cluster->start);
@@ -3057,7 +3057,7 @@ int prealloc_file_extent_cluster(struct inode *inode,
 	btrfs_free_reserved_data_space(inode, cluster->start,
 				       cluster->end + 1 - cluster->start);
 out:
-	mutex_unlock(&inode->i_mutex);
+	inode_unlock(inode);
 	return ret;
 }