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Subject[RFC PATCH 01/37] mmap locking API: mmap_lock_is_contended returns a bool
Date
Change mmap_lock_is_contended to return a bool value, rather than an
int which the callers are then supposed to interpret as a bool. This
is to ensure consistency with other mmap lock API functions (such as
the trylock functions).

Signed-off-by: Michel Lespinasse <michel@lespinasse.org>
---
include/linux/mmap_lock.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/mmap_lock.h b/include/linux/mmap_lock.h
index 0540f0156f58..4e27f755766b 100644
--- a/include/linux/mmap_lock.h
+++ b/include/linux/mmap_lock.h
@@ -171,9 +171,9 @@ static inline void mmap_assert_write_locked(struct mm_struct *mm)
VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_lock), mm);
}

-static inline int mmap_lock_is_contended(struct mm_struct *mm)
+static inline bool mmap_lock_is_contended(struct mm_struct *mm)
{
- return rwsem_is_contended(&mm->mmap_lock);
+ return rwsem_is_contended(&mm->mmap_lock) != 0;
}

#endif /* _LINUX_MMAP_LOCK_H */
--
2.20.1
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