[Xen-devel] [PATCH] minios: drop volatile qualifier from some status variables

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>]

minios: drop volatile qualifier from some status variables
since we already use memory barriers as approriate to prevent concurrent
access with event handlers.

Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>

diff -r 66fdf958c6fc -r 20945f11bf10 extras/mini-os/include/lib.h
--- a/extras/mini-os/include/lib.h      Tue May 06 12:07:32 2008 +0100
+++ b/extras/mini-os/include/lib.h      Tue May 06 15:40:02 2008 +0100
@@ -162,7 +162,7 @@ extern struct file {
              * wakes select for this FD. */
             struct {
                 evtchn_port_t port;
-                volatile unsigned long pending;
+                unsigned long pending;
                 int bound;
             } ports[MAX_EVTCHN_PORTS];
        } evtchn;
@@ -181,7 +181,7 @@ extern struct file {
             xenbus_event_queue events;
         } xenbus;
     };
-    volatile int read; /* maybe available for read */
+    int read;  /* maybe available for read */
 } files[];
 
 int alloc_fd(enum fd_type type);

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