mm: Use rwsem_is_write_locked in mmap_assert_write_locked

This slightly strengthens our checks when lockdep is disabled.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

diff --git a/include/linux/mmap_lock.h b/include/linux/mmap_lock.h
index e05e167dbd166eafa4d5796e700d67a357fa3b6f..277b8c96bbf96bf2a33031af5b4e7878a9c36008 100644 (file)
--- a/include/linux/mmap_lock.h
+++ b/include/linux/mmap_lock.h
@@ -69,7 +69,7 @@ static inline void mmap_assert_locked(struct mm_struct *mm)
 static inline void mmap_assert_write_locked(struct mm_struct *mm)
 {
        lockdep_assert_held_write(&mm->mmap_lock);
-       VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_lock), mm);
+       VM_BUG_ON_MM(!rwsem_is_write_locked(&mm->mmap_lock), mm);
 }
 
 #ifdef CONFIG_PER_VMA_LOCK