Pushdown the bkl to autofs_root_ioctl.

Signed-off-by: Frederic Weisbecker <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Autofs <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: John Kacur <[email protected]>
Cc: Arnd Bergmann <[email protected]>
---
 fs/autofs/root.c |   19 ++++++++++++++++---
 1 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/fs/autofs/root.c b/fs/autofs/root.c
index 8713c7c..dc16b3c 100644
--- a/fs/autofs/root.c
+++ b/fs/autofs/root.c
@@ -25,12 +25,12 @@ static int autofs_root_symlink(struct inode *,struct dentry 
*,const char *);
 static int autofs_root_unlink(struct inode *,struct dentry *);
 static int autofs_root_rmdir(struct inode *,struct dentry *);
 static int autofs_root_mkdir(struct inode *,struct dentry *,int);
-static int autofs_root_ioctl(struct inode *, struct file *,unsigned 
int,unsigned long);
+static long autofs_root_ioctl(struct file *, unsigned int, unsigned long);
 
 const struct file_operations autofs_root_operations = {
        .read           = generic_read_dir,
        .readdir        = autofs_root_readdir,
-       .ioctl          = autofs_root_ioctl,
+       .unlocked_ioctl = autofs_root_ioctl,
 };
 
 const struct inode_operations autofs_root_inode_operations = {
@@ -545,7 +545,7 @@ static inline int autofs_expire_run(struct super_block *sb,
  * ioctl()'s on the root directory is the chief method for the daemon to
  * generate kernel reactions
  */
-static int autofs_root_ioctl(struct inode *inode, struct file *filp,
+static int autofs_root_ioctl_unlocked(struct inode *inode, struct file *filp,
                             unsigned int cmd, unsigned long arg)
 {
        struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb);
@@ -579,3 +579,16 @@ static int autofs_root_ioctl(struct inode *inode, struct 
file *filp,
                return -ENOSYS;
        }
 }
+
+static long autofs_root_ioctl(struct file *filp,
+                            unsigned int cmd, unsigned long arg)
+{
+       long ret;
+       struct inode *inode = filp->f_dentry->d_inode;
+
+       lock_kernel();
+       ret = autofs_root_ioctl_unlocked(inode, filp, cmd, arg);
+       unlock_kernel();
+
+       return ret;
+}
-- 
1.6.2.3

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