new helper: file_inode(file)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 4855892..4fe52b3 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2637,7 +2637,7 @@
*/
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 @@
/* 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 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);