[v4,02/10] MMU notifier: use the new mmap locking API
diff mbox series

Message ID 20200415004353.130248-3-walken@google.com
State New
Headers show
Series
  • Add a new mmap locking API wrapping mmap_sem calls
Related show

Commit Message

Michel Lespinasse April 15, 2020, 12:43 a.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>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
---
 include/linux/mmu_notifier.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Comments

Davidlohr Bueso April 20, 2020, 7:51 p.m. UTC | #1
On Tue, 14 Apr 2020, Michel Lespinasse wrote:

>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>
>Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>

Reviewed-by: Davidlohr Bueso <dbueso@suse.de>

>---
> include/linux/mmu_notifier.h | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
>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);
>-- 
>2.26.0.110.g2183baf09c-goog
>

Patch
diff mbox series

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);