+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_SUPER_H
#define _BCACHEFS_SUPER_H
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)
struct bch_fs *bch2_bdev_to_fs(struct block_device *);
struct bch_fs *bch2_uuid_to_fs(uuid_le);
-int bch2_congested(void *, int);
bool bch2_dev_state_allowed(struct bch_fs *, struct bch_dev *,
enum bch_member_state, int);
int bch2_dev_online(struct bch_fs *, const char *);
int bch2_dev_offline(struct bch_fs *, struct bch_dev *, int);
int bch2_dev_resize(struct bch_fs *, struct bch_dev *, u64);
+struct bch_dev *bch2_dev_lookup(struct bch_fs *, const char *);
bool bch2_fs_emergency_read_only(struct bch_fs *);
void bch2_fs_read_only(struct bch_fs *);
-const char *bch2_fs_read_write(struct bch_fs *);
+int bch2_fs_read_write(struct bch_fs *);
+int bch2_fs_read_write_early(struct bch_fs *);
+
+/*
+ * Only for use in the recovery/fsck path:
+ */
+static inline void bch2_fs_lazy_rw(struct bch_fs *c)
+{
+ if (percpu_ref_is_zero(&c->writes))
+ bch2_fs_read_write_early(c);
+}
+
+void __bch2_fs_stop(struct bch_fs *);
+void bch2_fs_free(struct bch_fs *);
void bch2_fs_stop(struct bch_fs *);
-const char *bch2_fs_start(struct bch_fs *);
+int bch2_fs_start(struct bch_fs *);
struct bch_fs *bch2_fs_open(char * const *, unsigned, struct bch_opts);
const char *bch2_fs_open_incremental(const char *path);