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

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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>
This commit is contained in:
Stephen Wilson
2011-03-13 15:49:16 -04:00
committed by Al Viro
parent 31db58b3ab
commit 83b964bbf8
7 changed files with 10 additions and 10 deletions
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mm/memory.c
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@ -1486,7 +1486,7 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
struct vm_area_struct *vma;
vma = find_extend_vma(mm, start);
if (!vma && in_gate_area(tsk, start)) {
if (!vma && in_gate_area(tsk->mm, start)) {
unsigned long pg = start & PAGE_MASK;
struct vm_area_struct *gate_vma = get_gate_vma(tsk->mm);
pgd_t *pgd;