From 49887e47a5262cc7b87d547de57a21a072c6ea5e Mon Sep 17 00:00:00 2001 From: Zhang Yi Date: Fri, 11 Aug 2023 14:36:06 +0800 Subject: jbd2: cleanup journal_init_common() Adjust the initialization sequence and error handle of journal_t, moving load superblock to the begin, and classify others initialization. Signed-off-by: Zhang Yi Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20230811063610.2980059-9-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o --- fs/jbd2/journal.c | 45 ++++++++++++++++++++++++--------------------- 1 file changed, 24 insertions(+), 21 deletions(-) (limited to 'fs/jbd2/journal.c') diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index ef9d75cca362..04b67844118c 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1533,6 +1533,16 @@ static journal_t *journal_init_common(struct block_device *bdev, if (!journal) return NULL; + journal->j_blocksize = blocksize; + journal->j_dev = bdev; + journal->j_fs_dev = fs_dev; + journal->j_blk_offset = start; + journal->j_total_len = len; + + err = journal_load_superblock(journal); + if (err) + goto err_cleanup; + init_waitqueue_head(&journal->j_wait_transaction_locked); init_waitqueue_head(&journal->j_wait_done_commit); init_waitqueue_head(&journal->j_wait_commit); @@ -1544,12 +1554,15 @@ static journal_t *journal_init_common(struct block_device *bdev, mutex_init(&journal->j_checkpoint_mutex); spin_lock_init(&journal->j_revoke_lock); spin_lock_init(&journal->j_list_lock); + spin_lock_init(&journal->j_history_lock); rwlock_init(&journal->j_state_lock); journal->j_commit_interval = (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE); journal->j_min_batch_time = 0; journal->j_max_batch_time = 15000; /* 15ms */ atomic_set(&journal->j_reserved_credits, 0); + lockdep_init_map(&journal->j_trans_commit_map, "jbd2_handle", + &jbd2_trans_commit_key, 0); /* The journal is marked for error until we succeed with recovery! */ journal->j_flags = JBD2_ABORT; @@ -1559,18 +1572,10 @@ static journal_t *journal_init_common(struct block_device *bdev, if (err) goto err_cleanup; - spin_lock_init(&journal->j_history_lock); - - lockdep_init_map(&journal->j_trans_commit_map, "jbd2_handle", - &jbd2_trans_commit_key, 0); - - /* journal descriptor can store up to n blocks -bzzz */ - journal->j_blocksize = blocksize; - journal->j_dev = bdev; - journal->j_fs_dev = fs_dev; - journal->j_blk_offset = start; - journal->j_total_len = len; - /* We need enough buffers to write out full descriptor block. */ + /* + * journal descriptor can store up to n blocks, we need enough + * buffers to write out full descriptor block. + */ n = journal->j_blocksize / jbd2_min_tag_size(); journal->j_wbufsize = n; journal->j_fc_wbuf = NULL; @@ -1579,7 +1584,8 @@ static journal_t *journal_init_common(struct block_device *bdev, if (!journal->j_wbuf) goto err_cleanup; - err = journal_load_superblock(journal); + err = percpu_counter_init(&journal->j_checkpoint_jh_count, 0, + GFP_KERNEL); if (err) goto err_cleanup; @@ -1588,21 +1594,18 @@ static journal_t *journal_init_common(struct block_device *bdev, journal->j_shrinker.count_objects = jbd2_journal_shrink_count; journal->j_shrinker.seeks = DEFAULT_SEEKS; journal->j_shrinker.batch = journal->j_max_transaction_buffers; - - if (percpu_counter_init(&journal->j_checkpoint_jh_count, 0, GFP_KERNEL)) + err = register_shrinker(&journal->j_shrinker, "jbd2-journal:(%u:%u)", + MAJOR(bdev->bd_dev), MINOR(bdev->bd_dev)); + if (err) goto err_cleanup; - if (register_shrinker(&journal->j_shrinker, "jbd2-journal:(%u:%u)", - MAJOR(bdev->bd_dev), MINOR(bdev->bd_dev))) { - percpu_counter_destroy(&journal->j_checkpoint_jh_count); - goto err_cleanup; - } return journal; err_cleanup: - brelse(journal->j_sb_buffer); + percpu_counter_destroy(&journal->j_checkpoint_jh_count); kfree(journal->j_wbuf); jbd2_journal_destroy_revoke(journal); + journal_fail_superblock(journal); kfree(journal); return NULL; } -- cgit v1.2.3