diff options
Diffstat (limited to 'fs/bcachefs/super.c')
| -rw-r--r-- | fs/bcachefs/super.c | 85 |
1 files changed, 61 insertions, 24 deletions
diff --git a/fs/bcachefs/super.c b/fs/bcachefs/super.c index 20208f3c5d8b..a58edde43bee 100644 --- a/fs/bcachefs/super.c +++ b/fs/bcachefs/super.c @@ -185,6 +185,7 @@ static void bch2_dev_unlink(struct bch_dev *); static void bch2_dev_free(struct bch_dev *); static int bch2_dev_alloc(struct bch_fs *, unsigned); static int bch2_dev_sysfs_online(struct bch_fs *, struct bch_dev *); +static void bch2_dev_io_ref_stop(struct bch_dev *, int); static void __bch2_dev_read_only(struct bch_fs *, struct bch_dev *); struct bch_fs *bch2_dev_to_fs(dev_t dev) @@ -294,8 +295,10 @@ static void __bch2_fs_read_only(struct bch_fs *c) /* * After stopping journal: */ - for_each_member_device(c, ca) + for_each_member_device(c, ca) { + bch2_dev_io_ref_stop(ca, WRITE); bch2_dev_allocator_remove(c, ca); + } } #ifndef BCH_WRITE_REF_DEBUG @@ -465,10 +468,6 @@ static int __bch2_fs_read_write(struct bch_fs *c, bool early) if (ret) goto err; - ret = bch2_fs_mark_dirty(c); - if (ret) - goto err; - clear_bit(BCH_FS_clean_shutdown, &c->flags); /* @@ -480,10 +479,24 @@ static int __bch2_fs_read_write(struct bch_fs *c, bool early) set_bit(JOURNAL_need_flush_write, &c->journal.flags); set_bit(JOURNAL_running, &c->journal.flags); - for_each_rw_member(c, ca) + __for_each_online_member(c, ca, BIT(BCH_MEMBER_STATE_rw), READ) { bch2_dev_allocator_add(c, ca); + percpu_ref_reinit(&ca->io_ref[WRITE]); + } bch2_recalc_capacity(c); + ret = bch2_fs_mark_dirty(c); + if (ret) + goto err; + + spin_lock(&c->journal.lock); + bch2_journal_space_available(&c->journal); + spin_unlock(&c->journal.lock); + + ret = bch2_journal_reclaim_start(&c->journal); + if (ret) + goto err; + set_bit(BCH_FS_rw, &c->flags); set_bit(BCH_FS_was_rw, &c->flags); @@ -495,11 +508,6 @@ static int __bch2_fs_read_write(struct bch_fs *c, bool early) atomic_long_inc(&c->writes[i]); } #endif - - ret = bch2_journal_reclaim_start(&c->journal); - if (ret) - goto err; - if (!early) { ret = bch2_fs_read_write_late(c); if (ret) @@ -675,6 +683,7 @@ void bch2_fs_free(struct bch_fs *c) if (ca) { EBUG_ON(atomic_long_read(&ca->ref) != 1); + bch2_dev_io_ref_stop(ca, READ); bch2_free_super(&ca->disk_sb); bch2_dev_free(ca); } @@ -1199,6 +1208,15 @@ static int bch2_dev_in_fs(struct bch_sb_handle *fs, /* Device startup/shutdown: */ +static void bch2_dev_io_ref_stop(struct bch_dev *ca, int rw) +{ + if (!percpu_ref_is_zero(&ca->io_ref[rw])) { + reinit_completion(&ca->io_ref_completion[rw]); + percpu_ref_kill(&ca->io_ref[rw]); + wait_for_completion(&ca->io_ref_completion[rw]); + } +} + static void bch2_dev_release(struct kobject *kobj) { struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj); @@ -1208,6 +1226,9 @@ static void bch2_dev_release(struct kobject *kobj) static void bch2_dev_free(struct bch_dev *ca) { + WARN_ON(!percpu_ref_is_zero(&ca->io_ref[WRITE])); + WARN_ON(!percpu_ref_is_zero(&ca->io_ref[READ])); + cancel_work_sync(&ca->io_error_work); bch2_dev_unlink(ca); @@ -1226,7 +1247,8 @@ static void bch2_dev_free(struct bch_dev *ca) bch2_time_stats_quantiles_exit(&ca->io_latency[WRITE]); bch2_time_stats_quantiles_exit(&ca->io_latency[READ]); - percpu_ref_exit(&ca->io_ref); + percpu_ref_exit(&ca->io_ref[WRITE]); + percpu_ref_exit(&ca->io_ref[READ]); #ifndef CONFIG_BCACHEFS_DEBUG percpu_ref_exit(&ca->ref); #endif @@ -1238,14 +1260,12 @@ static void __bch2_dev_offline(struct bch_fs *c, struct bch_dev *ca) lockdep_assert_held(&c->state_lock); - if (percpu_ref_is_zero(&ca->io_ref)) + if (percpu_ref_is_zero(&ca->io_ref[READ])) return; __bch2_dev_read_only(c, ca); - reinit_completion(&ca->io_ref_completion); - percpu_ref_kill(&ca->io_ref); - wait_for_completion(&ca->io_ref_completion); + bch2_dev_io_ref_stop(ca, READ); bch2_dev_unlink(ca); @@ -1262,11 +1282,18 @@ static void bch2_dev_ref_complete(struct percpu_ref *ref) } #endif -static void bch2_dev_io_ref_complete(struct percpu_ref *ref) +static void bch2_dev_io_ref_read_complete(struct percpu_ref *ref) +{ + struct bch_dev *ca = container_of(ref, struct bch_dev, io_ref[READ]); + + complete(&ca->io_ref_completion[READ]); +} + +static void bch2_dev_io_ref_write_complete(struct percpu_ref *ref) { - struct bch_dev *ca = container_of(ref, struct bch_dev, io_ref); + struct bch_dev *ca = container_of(ref, struct bch_dev, io_ref[WRITE]); - complete(&ca->io_ref_completion); + complete(&ca->io_ref_completion[WRITE]); } static void bch2_dev_unlink(struct bch_dev *ca) @@ -1330,7 +1357,8 @@ static struct bch_dev *__bch2_dev_alloc(struct bch_fs *c, kobject_init(&ca->kobj, &bch2_dev_ktype); init_completion(&ca->ref_completion); - init_completion(&ca->io_ref_completion); + init_completion(&ca->io_ref_completion[READ]); + init_completion(&ca->io_ref_completion[WRITE]); INIT_WORK(&ca->io_error_work, bch2_io_error_work); @@ -1356,7 +1384,9 @@ static struct bch_dev *__bch2_dev_alloc(struct bch_fs *c, bch2_dev_allocator_background_init(ca); - if (percpu_ref_init(&ca->io_ref, bch2_dev_io_ref_complete, + if (percpu_ref_init(&ca->io_ref[READ], bch2_dev_io_ref_read_complete, + PERCPU_REF_INIT_DEAD, GFP_KERNEL) || + percpu_ref_init(&ca->io_ref[WRITE], bch2_dev_io_ref_write_complete, PERCPU_REF_INIT_DEAD, GFP_KERNEL) || !(ca->sb_read_scratch = kmalloc(BCH_SB_READ_SCRATCH_BUF_SIZE, GFP_KERNEL)) || bch2_dev_buckets_alloc(c, ca) || @@ -1419,7 +1449,8 @@ static int __bch2_dev_attach_bdev(struct bch_dev *ca, struct bch_sb_handle *sb) return -BCH_ERR_device_size_too_small; } - BUG_ON(!percpu_ref_is_zero(&ca->io_ref)); + BUG_ON(!percpu_ref_is_zero(&ca->io_ref[READ])); + BUG_ON(!percpu_ref_is_zero(&ca->io_ref[WRITE])); ret = bch2_dev_journal_init(ca, sb->sb); if (ret) @@ -1438,7 +1469,7 @@ static int __bch2_dev_attach_bdev(struct bch_dev *ca, struct bch_sb_handle *sb) ca->dev = ca->disk_sb.bdev->bd_dev; - percpu_ref_reinit(&ca->io_ref); + percpu_ref_reinit(&ca->io_ref[READ]); return 0; } @@ -1568,6 +1599,8 @@ static bool bch2_fs_may_start(struct bch_fs *c) static void __bch2_dev_read_only(struct bch_fs *c, struct bch_dev *ca) { + bch2_dev_io_ref_stop(ca, WRITE); + /* * The allocator thread itself allocates btree nodes, so stop it first: */ @@ -1584,6 +1617,10 @@ static void __bch2_dev_read_write(struct bch_fs *c, struct bch_dev *ca) bch2_dev_allocator_add(c, ca); bch2_recalc_capacity(c); + + if (percpu_ref_is_zero(&ca->io_ref[WRITE])) + percpu_ref_reinit(&ca->io_ref[WRITE]); + bch2_dev_do_discards(ca); } @@ -1731,7 +1768,7 @@ int bch2_dev_remove(struct bch_fs *c, struct bch_dev *ca, int flags) return 0; err: if (ca->mi.state == BCH_MEMBER_STATE_rw && - !percpu_ref_is_zero(&ca->io_ref)) + !percpu_ref_is_zero(&ca->io_ref[READ])) __bch2_dev_read_write(c, ca); up_write(&c->state_lock); return ret; |