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jbd2: move load_superblock() into journal_init_common()

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Move the call to load_superblock() from jbd2_journal_load() and
jbd2_journal_wipe() early into journal_init_common(), the journal
superblock gets read and the in-memory journal_t structure gets
initialised after calling jbd2_journal_init_{dev,inode}, it's safe to
do following initialization according to it.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230811063610.2980059-3-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Zhang Yi 2023-08-11 14:36:00 +08:00 committed by Theodore Ts'o
parent 29a511e49f
commit c30713084b
1 changed files with 5 additions and 11 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

16
fs/jbd2/journal.c
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@ -1582,6 +1582,10 @@ static journal_t *journal_init_common(struct block_device *bdev,
journal->j_sb_buffer = bh;
journal->j_superblock = (journal_superblock_t *)bh->b_data;
err = load_superblock(journal);
if (err)
goto err_cleanup;
journal->j_shrink_transaction = NULL;
journal->j_shrinker.scan_objects = jbd2_journal_shrink_scan;
journal->j_shrinker.count_objects = jbd2_journal_shrink_count;
@ -2056,13 +2060,7 @@ EXPORT_SYMBOL(jbd2_journal_update_sb_errno);
int jbd2_journal_load(journal_t *journal)
{
int err;
journal_superblock_t *sb;
err = load_superblock(journal);
if (err)
return err;
sb = journal->j_superblock;
journal_superblock_t *sb = journal->j_superblock;
/*
* If this is a V2 superblock, then we have to check the
@ -2523,10 +2521,6 @@ int jbd2_journal_wipe(journal_t *journal, int write)
J_ASSERT (!(journal->j_flags & JBD2_LOADED));
err = load_superblock(journal);
if (err)
return err;
if (!journal->j_tail)
goto no_recovery;