btrfs: cleanup device states define BTRFS_DEV_STATE_WRITEABLE

Currently device state is being managed by each individual int
variable such as struct btrfs_device::writeable. Instead of that
declare device state BTRFS_DEV_STATE_WRITEABLE and use the
bit operations.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
[ whitespace adjustments ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2017-12-04 12:54:52 +08:00 • committed by David Sterba
commit ebbede42d4
7 changed files with 49 additions and 34 deletions