diff options
Diffstat (limited to 'libbcachefs/super.h')
| -rw-r--r-- | libbcachefs/super.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/libbcachefs/super.h b/libbcachefs/super.h index a52ee3bb..231bc529 100644 --- a/libbcachefs/super.h +++ b/libbcachefs/super.h @@ -27,7 +27,26 @@ static inline sector_t bucket_remainder(const struct bch_dev *ca, sector_t s) static inline bool bch2_dev_is_online(struct bch_dev *ca) { - return ca->disk_sb.bdev != NULL; + return !percpu_ref_is_zero(&ca->io_ref); +} + +static inline bool bch2_dev_is_readable(struct bch_dev *ca) +{ + return bch2_dev_is_online(ca) && + ca->mi.state != BCH_MEMBER_STATE_FAILED; +} + +static inline bool bch2_dev_get_ioref(struct bch_dev *ca, int rw) +{ + if (!percpu_ref_tryget(&ca->io_ref)) + return false; + + if (ca->mi.state == BCH_MEMBER_STATE_RW || + (ca->mi.state == BCH_MEMBER_STATE_RO && rw == READ)) + return true; + + percpu_ref_put(&ca->io_ref); + return false; } static inline unsigned dev_mask_nr(const struct bch_devs_mask *devs) |