From: Andrew Morton <akpm@linux-foundation.org>

unneeded casts..

Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Paul Menage <menage@google.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/proc/base.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff -puN fs/proc/base.c~pid-namespaces-changes-to-show-virtual-ids-to-user-fix fs/proc/base.c
--- a/fs/proc/base.c~pid-namespaces-changes-to-show-virtual-ids-to-user-fix
+++ a/fs/proc/base.c
@@ -2244,7 +2244,7 @@ struct dentry *proc_pid_lookup(struct in
 	if (tgid == ~0U)
 		goto out;
 
-	ns = (struct pid_namespace *)dentry->d_sb->s_fs_info;
+	ns = dentry->d_sb->s_fs_info;
 	rcu_read_lock();
 	task = find_task_by_pid_ns(tgid, ns);
 	if (task)
@@ -2325,7 +2325,7 @@ int proc_pid_readdir(struct file * filp,
 			goto out;
 	}
 
-	ns = (struct pid_namespace *)filp->f_dentry->d_sb->s_fs_info;
+	ns = filp->f_dentry->d_sb->s_fs_info;
 	tgid = filp->f_pos - TGID_OFFSET;
 	for (task = next_tgid(tgid, ns);
 	     task;
@@ -2466,7 +2466,7 @@ static struct dentry *proc_task_lookup(s
 	if (tid == ~0U)
 		goto out;
 
-	ns = (struct pid_namespace *)dentry->d_sb->s_fs_info;
+	ns = dentry->d_sb->s_fs_info;
 	rcu_read_lock();
 	task = find_task_by_pid_ns(tid, ns);
 	if (task)
@@ -2609,7 +2609,7 @@ static int proc_task_readdir(struct file
 	/* f_version caches the tgid value that the last readdir call couldn't
 	 * return. lseek aka telldir automagically resets f_version to 0.
 	 */
-	ns = (struct pid_namespace *)filp->f_dentry->d_sb->s_fs_info;
+	ns = filp->f_dentry->d_sb->s_fs_info;
 	tid = (int)filp->f_version;
 	filp->f_version = 0;
 	for (task = first_tid(leader, tid, pos - 2, ns);
_