* [PATCH 1/8] 2.6.17: proper mutex use
@ 2007-02-14 15:57 Jan Beulich
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From: Jan Beulich @ 2007-02-14 15:57 UTC (permalink / raw)
To: xen-devel
Mutexes are supposed to not use the old semaphore technique anymore.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Index: head-2007-02-08/drivers/xen/balloon/balloon.c
===================================================================
--- head-2007-02-08.orig/drivers/xen/balloon/balloon.c 2007-02-08 17:07:13.000000000 +0100
+++ head-2007-02-08/drivers/xen/balloon/balloon.c 2007-02-08 17:09:47.000000000 +0100
@@ -60,7 +60,7 @@
static struct proc_dir_entry *balloon_pde;
#endif
-static DECLARE_MUTEX(balloon_mutex);
+static DEFINE_MUTEX(balloon_mutex);
/*
* Protects atomic reservation decrease/increase against concurrent increases.
@@ -321,7 +321,7 @@ static void balloon_process(void *unused
int need_sleep = 0;
long credit;
- down(&balloon_mutex);
+ mutex_lock(&balloon_mutex);
do {
credit = current_target() - bs.current_pages;
@@ -340,7 +340,7 @@ static void balloon_process(void *unused
if (current_target() != bs.current_pages)
mod_timer(&balloon_timer, jiffies + HZ);
- up(&balloon_mutex);
+ mutex_unlock(&balloon_mutex);
}
/* Resets the Xen limit, sets new target, and kicks off processing. */
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