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btrfs: cleanup device states define BTRFS_DEV_STATE_REPLACE_TGT

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Currently device state is being managed by each individual int
variable such as struct btrfs_device::is_tgtdev_for_dev_replace.
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>
[ whitespace adjustments ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain
2017-12-04 12:54:55 +08:00
committed by David Sterba
parent e6e674bd4d
commit 401e29c124
7 changed files with 31 additions and 24 deletions
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2
fs/btrfs/volumes.h
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@@ -50,6 +50,7 @@ struct btrfs_pending_bios {
#define BTRFS_DEV_STATE_WRITEABLE (0)
#define BTRFS_DEV_STATE_IN_FS_METADATA (1)
#define BTRFS_DEV_STATE_MISSING (2)
#define BTRFS_DEV_STATE_REPLACE_TGT (3)
struct btrfs_device {
struct list_head dev_list;
@@ -74,7 +75,6 @@ struct btrfs_device {
fmode_t mode;
unsigned long dev_state;
int is_tgtdev_for_dev_replace;
blk_status_t last_flush_error;
int flush_bio_sent;