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jbd2: export jbd2_journal_[un]register_shrinker()

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Export jbd2_journal_[un]register_shrinker() to fix this error when
ext4 is built as a module:

  ERROR: modpost: "jbd2_journal_unregister_shrinker" undefined!
  ERROR: modpost: "jbd2_journal_register_shrinker" undefined!

Fixes: 4ba3fcdde7e3 ("jbd2,ext4: add a shrinker to release checkpointed buffers")
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210630083638.140218-1-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Zhang Yi 2021-06-30 16:36:38 +08:00 committed by Theodore Ts'o
parent d578b99443
commit 16aa4c9a1f
1 changed files with 2 additions and 0 deletions
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fs/jbd2/journal.c
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@ -2122,6 +2122,7 @@ int jbd2_journal_register_shrinker(journal_t *journal)
return 0;
}
EXPORT_SYMBOL(jbd2_journal_register_shrinker);
/**
* jbd2_journal_unregister_shrinker()
@ -2134,6 +2135,7 @@ void jbd2_journal_unregister_shrinker(journal_t *journal)
percpu_counter_destroy(&journal->j_jh_shrink_count);
unregister_shrinker(&journal->j_shrinker);
}
EXPORT_SYMBOL(jbd2_journal_unregister_shrinker);
/**
* jbd2_journal_destroy() - Release a journal_t structure.