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

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Morally, the presence of a gate vma is more an attribute of a particular mm than
a particular task.  Moreover, dropping the dependency on task_struct will help
make both 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 15:49:15 -04:00
committed by Al Viro
parent 375906f876
commit 31db58b3ab
10 changed files with 23 additions and 20 deletions
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8
fs/proc/task_mmu.c
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@@ -126,7 +126,7 @@ static void *m_start(struct seq_file *m, loff_t *pos)
return mm;
down_read(&mm->mmap_sem);
tail_vma = get_gate_vma(priv->task);
tail_vma = get_gate_vma(priv->task->mm);
priv->tail_vma = tail_vma;
/* Start with last addr hint */
@@ -277,7 +277,8 @@ static int show_map(struct seq_file *m, void *v)
show_map_vma(m, vma);
if (m->count < m->size) /* vma is copied successfully */
m->version = (vma != get_gate_vma(task))? vma->vm_start: 0;
m->version = (vma != get_gate_vma(task->mm))
? vma->vm_start : 0;
return 0;
}
@@ -436,7 +437,8 @@ static int show_smap(struct seq_file *m, void *v)
(unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0);
if (m->count < m->size) /* vma is copied successfully */
m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
m->version = (vma != get_gate_vma(task->mm))
? vma->vm_start : 0;
return 0;
}