[Xen-devel] [PATCH] xen-tmem: Build cleancache shim to Xen Transcendent Memory only if Cleancache is enabled

[Nikanth Karthikesan <nikanth@xxxxxxxxxx>]

xen-tmem: Build cleancache shim to Xen Transcendent Memory only if Cleancache 
is enabled

Fix compilation warning

drivers/xen/tmem.c: In function ‘xen_tmem_init’:
drivers/xen/tmem.c:246: warning: unused variable ‘old_ops’
drivers/xen/tmem.c: At top level:
drivers/xen/tmem.c:234: warning: ‘tmem_cleancache_ops’ defined but not used

Signed-off-by: Nikanth Karthikesan <nikanth@xxxxxxxxxx>

---

Index: linux-2.6/drivers/xen/Makefile
===================================================================
--- linux-2.6.orig/drivers/xen/Makefile 2011-06-10 13:42:18.521140982 +0530
+++ linux-2.6/drivers/xen/Makefile      2011-06-10 13:44:50.110986353 +0530
@@ -1,6 +1,6 @@
 obj-y  += grant-table.o features.o events.o manage.o balloon.o
 obj-y  += xenbus/
-obj-y  += tmem.o
+obj-$(CONFIG_CLEAN_CACHE)      += tmem.o
 
 nostackp := $(call cc-option, -fno-stack-protector)
 CFLAGS_features.o                      := $(nostackp)
Index: linux-2.6/drivers/xen/tmem.c
===================================================================
--- linux-2.6.orig/drivers/xen/tmem.c   2011-06-10 12:19:14.522391890 +0530
+++ linux-2.6/drivers/xen/tmem.c        2011-06-10 13:45:42.500984200 +0530
@@ -247,7 +247,6 @@
 
        if (!xen_domain())
                return 0;
-#ifdef CONFIG_CLEANCACHE
        BUG_ON(sizeof(struct cleancache_filekey) != sizeof(struct tmem_oid));
        if (tmem_enabled && use_cleancache) {
                char *s = "";
@@ -257,7 +256,6 @@
                printk(KERN_INFO "cleancache enabled, RAM provided by "
                                 "Xen Transcendent Memory%s\n", s);
        }
-#endif
        return 0;
 }
 



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