mm: arch: make in_gate_area take an mm_struct instead of a task_struct

Morally, the question of whether an address lies in a gate vma should be asked
with respect to an mm, not a particular task.  Moreover, dropping the dependency
on task_struct will help make existing and future operations on mm's more
flexible and convenient.

Signed-off-by: Stephen Wilson <wilsons@start.ca>
Reviewed-by: Michel Lespinasse <walken@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 18b4a6358ab4..5c6d916cd302 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1581,10 +1581,10 @@ static inline bool kernel_page_present(struct page *page) { return true; }
 extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm);
 #ifdef  __HAVE_ARCH_GATE_AREA
 int in_gate_area_no_task(unsigned long addr);
-int in_gate_area(struct task_struct *task, unsigned long addr);
+int in_gate_area(struct mm_struct *mm, unsigned long addr);
 #else
 int in_gate_area_no_task(unsigned long addr);
-#define in_gate_area(task, addr) ({(void)task; in_gate_area_no_task(addr);})
+#define in_gate_area(mm, addr) ({(void)mm; in_gate_area_no_task(addr);})
 #endif  /* __HAVE_ARCH_GATE_AREA */
 
 int drop_caches_sysctl_handler(struct ctl_table *, int,