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Diffstat (limited to 'include/linux/mmu_notifier.h')
-rw-r--r--include/linux/mmu_notifier.h13
1 files changed, 7 insertions, 6 deletions
diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h
index 736f6918335e..fc68f3570e19 100644
--- a/include/linux/mmu_notifier.h
+++ b/include/linux/mmu_notifier.h
@@ -5,6 +5,7 @@
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/mm_types.h>
+#include <linux/mmap_lock.h>
#include <linux/srcu.h>
#include <linux/interval_tree.h>
@@ -121,7 +122,7 @@ struct mmu_notifier_ops {
/*
* invalidate_range_start() and invalidate_range_end() must be
- * paired and are called only when the mmap_sem and/or the
+ * paired and are called only when the mmap_lock and/or the
* locks protecting the reverse maps are held. If the subsystem
* can't guarantee that no additional references are taken to
* the pages in the range, it has to implement the
@@ -212,13 +213,13 @@ struct mmu_notifier_ops {
};
/*
- * The notifier chains are protected by mmap_sem and/or the reverse map
+ * The notifier chains are protected by mmap_lock and/or the reverse map
* semaphores. Notifier chains are only changed when all reverse maps and
- * the mmap_sem locks are taken.
+ * the mmap_lock locks are taken.
*
* Therefore notifier chains can only be traversed when either
*
- * 1. mmap_sem is held.
+ * 1. mmap_lock is held.
* 2. One of the reverse map locks is held (i_mmap_rwsem or anon_vma->rwsem).
* 3. No other concurrent thread can access the list (release)
*/
@@ -277,9 +278,9 @@ mmu_notifier_get(const struct mmu_notifier_ops *ops, struct mm_struct *mm)
{
struct mmu_notifier *ret;
- down_write(&mm->mmap_sem);
+ mmap_write_lock(mm);
ret = mmu_notifier_get_locked(ops, mm);
- up_write(&mm->mmap_sem);
+ mmap_write_unlock(mm);
return ret;
}
void mmu_notifier_put(struct mmu_notifier *subscription);