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btrfs: cleanup device states define BTRFS_DEV_STATE_MISSING

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

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by : Nikolay Borisov <nborisov@suse.com>
[ whitespace adjustments ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2017-12-04 12:54:54 +08:00 • committed by David Sterba
parent e12c96214d
commit e6e674bd4d
6 changed files with 28 additions and 21 deletions
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2
fs/btrfs/dev-replace.c
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@ -306,7 +306,7 @@ void btrfs_after_dev_replace_commit(struct btrfs_fs_info *fs_info)
static char* btrfs_dev_name(struct btrfs_device *device)
{
if (device->missing)
if (test_bit(BTRFS_DEV_STATE_MISSING, &device->dev_state))
return "<missing disk>";
else
return rcu_str_deref(device->name);