new helper: file_inode(file)

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

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 4855892798fd..4fe52b3b6ef6 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2637,7 +2637,7 @@ static struct dentry *cgroup_lookup(struct inode *dir, struct dentry *dentry, un
  */
 static inline struct cftype *__file_cft(struct file *file)
 {
-        if (file->f_dentry->d_inode->i_fop != &cgroup_file_operations)
+        if (file_inode(file)->i_fop != &cgroup_file_operations)
                 return ERR_PTR(-EINVAL);
         return __d_cft(file->f_dentry);
 }
@@ -3852,7 +3852,7 @@ static int cgroup_write_event_control(struct cgroup *cgrp, struct cftype *cft,
 
         /* the process need read permission on control file */
         /* AV: shouldn't we check that it's been opened for read instead? */
-        ret = inode_permission(cfile->f_path.dentry->d_inode, MAY_READ);
+        ret = inode_permission(file_inode(cfile), MAY_READ);
         if (ret < 0)
                 goto fail;
 
@@ -5441,7 +5441,7 @@ struct cgroup_subsys_state *cgroup_css_from_dir(struct file *f, int id)
         struct inode *inode;
         struct cgroup_subsys_state *css;
 
-        inode = f->f_dentry->d_inode;
+        inode = file_inode(f);
         /* check in cgroup filesystem dir */
         if (inode->i_op != &cgroup_dir_inode_operations)
                 return ERR_PTR(-EBADF);