[v3,02/10] MMU notifier: use the new mmap locking API
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Message ID 20200327225102.25061-3-walken@google.com
State New
Headers show
  • Add a new mmap locking API wrapping mmap_sem calls
Related show

Commit Message

Michel Lespinasse March 27, 2020, 10:50 p.m. UTC
This use is converted manually ahead of the next patch in the series,
as it requires including a new header which the automated conversion
would miss.

Signed-off-by: Michel Lespinasse <walken@google.com>
 include/linux/mmu_notifier.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

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diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h
index 736f6918335e..2f462710a1a4 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>
@@ -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);