Merge git://oss.sgi.com:8090/oss/git/xfs-2.6

[linux-2.6-omap-h63xx.git] / ipc / sem.c

diff --git a/ipc/sem.c b/ipc/sem.c
index 19af028a3e380d251d31e4b8ec4cd96ee679a1cb..46bb8a678decb50f760193c94cf2dcbce9f0e4e8 100644 (file)
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -73,6 +73,7 @@
 #include <linux/security.h>
 #include <linux/syscalls.h>
 #include <linux/audit.h>
+#include <linux/capability.h>
 #include <linux/seq_file.h>
 #include <asm/uaccess.h>
 #include "util.h"
@@ -381,6 +382,7 @@ static void update_queue (struct sem_array * sma)
                        /* hands-off: q will disappear immediately after
                         * writing q->status.
                         */
+                       smp_wmb();
                        q->status = error;
                        q = n;
                } else {
@@ -461,6 +463,7 @@ static void freeary (struct sem_array *sma, int id)
                n = q->next;
                q->status = IN_WAKEUP;
                wake_up_process(q->sleeper); /* doesn't sleep */
+               smp_wmb();
                q->status = -EIDRM;     /* hands-off q */
                q = n;
        }