x86: convert mm_context_t semaphore to a mutex

convert mm_context_t semaphore to a mutex.

Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kernel/ptrace_32.c b/arch/x86/kernel/ptrace_32.c
index 8622b9cd3e38..99102ec5fade 100644
--- a/arch/x86/kernel/ptrace_32.c
+++ b/arch/x86/kernel/ptrace_32.c
@@ -165,7 +165,7 @@ static unsigned long convert_eip_to_linear(struct task_struct *child, struct pt_
 
                 seg &= ~7UL;
 
-                down(&child->mm->context.sem);
+                mutex_lock(&child->mm->context.lock);
                 if (unlikely((seg >> 3) >= child->mm->context.size))
                         addr = -1L; /* bogus selector, access would fault */
                 else {
@@ -179,7 +179,7 @@ static unsigned long convert_eip_to_linear(struct task_struct *child, struct pt_
                                 addr &= 0xffff;
                         addr += base;
                 }
-                up(&child->mm->context.sem);
+                mutex_unlock(&child->mm->context.lock);
         }
         return addr;
 }