'(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 <[email protected]> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
