Symbolic permission names are used in bcache, for now octal permission
numbers are encouraged to use for readability. This patch replaces
all symbolic permissions by octal permission numbers.
Signed-off-by: NColy Li <colyli@suse.de>
Reviewed-by: NShenghui Wang <shhuiw@foxmail.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>