[PATCH 14/44] kdbus: Simplify expression in kdbus_get_memfd()

[Sergei Zviagintsev]

'(s & m) != m' means that mask 'm' contains some bits which are not set
in 's', and this is literally equal to '~s & m'.

Signed-off-by: Sergei Zviagintsev <sergei@xxxxxxxx>
---
 ipc/kdbus/message.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ipc/kdbus/message.c b/ipc/kdbus/message.c
index ae565cd343f8..c7ef23d40471 100644
--- a/ipc/kdbus/message.c
+++ b/ipc/kdbus/message.c
@@ -273,7 +273,7 @@ static struct file *kdbus_get_memfd(const struct kdbus_memfd *memfd)
 	s = shmem_get_seals(f);
 	if (s < 0)
 		ret = ERR_PTR(-EMEDIUMTYPE);
-	else if ((s & m) != m)
+	else if (~s & m)
 		ret = ERR_PTR(-ETXTBSY);
 	else if (memfd->start + memfd->size > (u64)i_size_read(file_inode(f)))
 		ret = ERR_PTR(-EFAULT);
-- 
1.8.3.1

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