sysvipc: use non-racy method for proc entries creation

Use proc_create_data() to make sure that ->proc_fops and ->data be setup
before gluing PDE to main tree.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Nadia Derbey <Nadia.Derbey@bull.net>
Cc: Pierre Peiffer <peifferp@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 7 deletions

diff --git a/ipc/util.c b/ipc/util.c
index 4c465cb22360..3339177b336c 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -165,13 +165,12 @@ void __init ipc_init_proc_interface(const char *path, const char *header,
         iface->ids      = ids;
         iface->show     = show;
 
-        pde = create_proc_entry(path,
-                                S_IRUGO,        /* world readable */
-                                NULL            /* parent dir */);
-        if (pde) {
-                pde->data = iface;
-                pde->proc_fops = &sysvipc_proc_fops;
-        } else {
+        pde = proc_create_data(path,
+                               S_IRUGO,        /* world readable */
+                               NULL,           /* parent dir */
+                               &sysvipc_proc_fops,
+                               iface);
+        if (!pde) {
                 kfree(iface);
         }
 }