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/inode.c b/fs/btrfs/inode.c
index 1b79dc9b12e4..e28f3d4691af 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8447,7 +8447,7 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
                  * not unlock the i_mutex at this case.
                  */
                 if (offset + count <= inode->i_size) {
-                        mutex_unlock(&inode->i_mutex);
+                        inode_unlock(inode);
                         relock = true;
                 }
                 ret = btrfs_delalloc_reserve_space(inode, offset, count);
@@ -8504,7 +8504,7 @@ out:
         if (wakeup)
                 inode_dio_end(inode);
         if (relock)
-                mutex_lock(&inode->i_mutex);
+                inode_lock(inode);
 
         return ret;
 }