[PATCH] proc: Remove useless BKL in proc_pid_readlink

We already call everything except do_proc_readlink outside of the BKL in
proc_pid_followlink, and there appears to be nothing in do_proc_readlink that
needs any special protection.

So remove this leftover from one of the BKL cleanup efforts.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/proc/base.c

@@ -1167,7 +1167,6 @@ static int proc_pid_readlink(struct dentry * dentry, char __user * buffer, int b
 	struct dentry *de;
 	struct vfsmount *mnt = NULL;
 
-	lock_kernel();
 
 	if (current->fsuid != inode->i_uid && !capable(CAP_DAC_OVERRIDE))
 		goto out;
@@ -1183,7 +1182,6 @@ static int proc_pid_readlink(struct dentry * dentry, char __user * buffer, int b
 	dput(de);
 	mntput(mnt);
 out:
-	unlock_kernel();
 	return error;
 }