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authorMichel Lespinasse <walken@google.com>2020-06-09 07:33:18 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-09 19:39:14 +0300
commitb72327fc8dfc1babce18526239b08724b95ef5f0 (patch)
tree385e0090aad404f44aed22d9e8fa73ccd187995f
parent9740ca4e95b43b91a4a848694a20d01ba6818f7b (diff)
downloadlinux-b72327fc8dfc1babce18526239b08724b95ef5f0.tar.xz
MMU notifier: use the new mmap locking API
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> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Reviewed-by: Davidlohr Bueso <dbueso@suse.de> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-3-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/mmu_notifier.h5
1 files 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);