[Xen-changelog] [xen-unstable] linux: proper mutex use in balloon driver

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1171546739 0
# Node ID b3c41b9f01a611d876741ab18cd126722157415c
# Parent  89d315c7dceabcad028e061b70f24a1822ed2ea5
linux: proper mutex use in balloon driver
Mutexes are supposed to not use the old semaphore technique anymore.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
---
 linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff -r 89d315c7dcea -r b3c41b9f01a6 
linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c
--- a/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c        Thu Feb 15 
13:36:58 2007 +0000
+++ b/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c        Thu Feb 15 
13:38:59 2007 +0000
@@ -60,7 +60,7 @@ static struct proc_dir_entry *balloon_pd
 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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