Jimi Xenidis
2006-Aug-13 16:50 UTC
[Xen-devel] [PATCH][XEN] Use gnttab_clear_flag() to clear flags
We also add #define to catch offenders early.
Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com>
---
diff -r 5f92043a3ab1 xen/common/grant_table.c
--- a/xen/common/grant_table.c Sun Aug 13 12:00:38 2006 -0400
+++ b/xen/common/grant_table.c Sun Aug 13 12:46:53 2006 -0400
@@ -32,6 +32,13 @@
#include <xen/guest_access.h>
#include <acm/acm_hooks.h>
+/*
+ * This file uses a special method for clearing bit in the flags called:
+ * gnttab_clear_flag()
+ * We redefine clear_bit() here to catch offenders early.
+ */
+#define clear_bit(flags, ptr) please_use_gnttab_clear_flag();
+
/* The first to members of a grant entry are updated as a combined
* pair. The following union allows that to happen in an endian
* neutral fashion. */
@@ -738,10 +745,10 @@ __release_grant_for_copy(
act->pin -= GNTPIN_hstw_inc;
if ( !(act->pin & GNTPIN_hstw_mask) && !readonly )
- clear_bit(_GTF_writing, &sha->flags);
+ gnttab_clear_flag(_GTF_writing, &sha->flags);
if ( !act->pin )
- clear_bit(_GTF_reading, &sha->flags);
+ gnttab_clear_flag(_GTF_reading, &sha->flags);
spin_unlock(&rd->grant_table->lock);
}
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