[PATCH] proc-ns: Use d_set_d_op() API to set dentry ops in proc_ns_instantiate().

[Jesse Gross <jesse@nicira.com>]

From: Pravin B Shelar <pshelar@nicira.com>

Use d_set_d_op() so that DCACHE_OP_* flags are set correctly which fixes ns
cleanup path i.e. `ip netns delete `.

This issue exists back to 3.0.

CC: Eric W. Biederman <ebiederm@xmission.com>
Reported-by: Justin Pettit <jpettit@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
---
 fs/proc/namespaces.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c
index 27da860..3551f1f 100644
--- a/fs/proc/namespaces.c
+++ b/fs/proc/namespaces.c
@@ -53,7 +53,7 @@ static struct dentry *proc_ns_instantiate(struct inode *dir,
 	ei->ns_ops    = ns_ops;
 	ei->ns	      = ns;
 
-	dentry->d_op = &pid_dentry_operations;
+	d_set_d_op(dentry, &pid_dentry_operations);
 	d_add(dentry, inode);
 	/* Close the race of the process dying before we return the dentry */
 	if (pid_revalidate(dentry, NULL))
-- 
1.7.5.4