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authorStephen Wilson <wilsons@start.ca>2011-03-13 15:49:16 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-23 16:36:54 -0400
commit83b964bbf82eb13a8f31bb49ca420787fe01f7a6 (patch)
treec94dcf5f4116ca351570fb9d2b7e37834e93f430 /arch
parent31db58b3ab432f72ea76be58b12e6ffaf627d5db (diff)
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/vdso.c2
-rw-r--r--arch/s390/kernel/vdso.c2
-rw-r--r--arch/sh/kernel/vsyscall/vsyscall.c2
-rw-r--r--arch/x86/mm/init_64.c4
-rw-r--r--arch/x86/vdso/vdso32-setup.c4
5 files changed, 7 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 6169f175693..467aa9ecbf9 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -825,7 +825,7 @@ int in_gate_area_no_task(unsigned long addr)
return 0;
}
-int in_gate_area(struct task_struct *task, unsigned long addr)
+int in_gate_area(struct mm_struct *mm, unsigned long addr)
{
return 0;
}
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index d19f30504c6..9006e966ef0 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -342,7 +342,7 @@ int in_gate_area_no_task(unsigned long addr)
return 0;
}
-int in_gate_area(struct task_struct *task, unsigned long addr)
+int in_gate_area(struct mm_struct *mm, unsigned long addr)
{
return 0;
}
diff --git a/arch/sh/kernel/vsyscall/vsyscall.c b/arch/sh/kernel/vsyscall/vsyscall.c
index 3f9b6f41813..62c36a8961d 100644
--- a/arch/sh/kernel/vsyscall/vsyscall.c
+++ b/arch/sh/kernel/vsyscall/vsyscall.c
@@ -99,7 +99,7 @@ struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
return NULL;
}
-int in_gate_area(struct task_struct *task, unsigned long address)
+int in_gate_area(struct mm_struct *mm, unsigned long address)
{
return 0;
}
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index dd4809b5844..43c441622c8 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -870,9 +870,9 @@ struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
return &gate_vma;
}
-int in_gate_area(struct task_struct *task, unsigned long addr)
+int in_gate_area(struct mm_struct *mm, unsigned long addr)
{
- struct vm_area_struct *vma = get_gate_vma(task->mm);
+ struct vm_area_struct *vma = get_gate_vma(mm);
if (!vma)
return 0;
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
index 1f651f6bdf6..f849bb29fda 100644
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -428,9 +428,9 @@ struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
return NULL;
}
-int in_gate_area(struct task_struct *task, unsigned long addr)
+int in_gate_area(struct mm_struct *mm, unsigned long addr)
{
- const struct vm_area_struct *vma = get_gate_vma(task->mm);
+ const struct vm_area_struct *vma = get_gate_vma(mm);
return vma && addr >= vma->vm_start && addr < vma->vm_end;
}