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authorIngo Molnar <mingo@elte.hu>2008-06-16 11:19:53 +0200
committerIngo Molnar <mingo@elte.hu>2008-06-16 11:19:53 +0200
commit064a32d82c20cdcb0119a8b316eb520608d8c647 (patch)
treec67d534bd4458b1482c11f11c724fe93beca4f80 /include/asm-um/mmu_context.h
parent0327318445d55808991a63137cfb698a90ab6adf (diff)
parent066519068ad2fbe98c7f45552b1f592903a9c8c8 (diff)
Merge branch 'linus' into x86/memtesttip-x86-memtest-2008-06-16_09.19_Mon
Diffstat (limited to 'include/asm-um/mmu_context.h')
-rw-r--r--include/asm-um/mmu_context.h12
1 files changed, 3 insertions, 9 deletions
diff --git a/include/asm-um/mmu_context.h b/include/asm-um/mmu_context.h
index 6686fc524ca1..54f42e8b0105 100644
--- a/include/asm-um/mmu_context.h
+++ b/include/asm-um/mmu_context.h
@@ -22,16 +22,10 @@ extern void force_flush_all(void);
static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
{
/*
- * This is called by fs/exec.c and fs/aio.c. In the first case, for an
- * exec, we don't need to do anything as we're called from userspace
- * and thus going to use a new host PID. In the second, we're called
- * from a kernel thread, and thus need to go doing the mmap's on the
- * host. Since they're very expensive, we want to avoid that as far as
- * possible.
+ * This is called by fs/exec.c and sys_unshare()
+ * when the new ->mm is used for the first time.
*/
- if (old != new && (current->flags & PF_BORROWED_MM))
- __switch_mm(&new->context.id);
-
+ __switch_mm(&new->context.id);
arch_dup_mmap(old, new);
}