From: Zhang Yi <yi.zhang@huawei.com> mainline inclusion from mainline-5.14-rc1 commit 16aa4c9a1fbe763c147a964cdc1f5be8ed98ed13 category: bugfix issue: #I3ZXZF Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... --------------------------- 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> Reviewed-by: Yang Erkun <yangerkun@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> Signed-off-by: Yu Changchun <yuchangchun1@huawei.com> --- fs/jbd2/journal.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 2f17757fa31f..d6759cd93268 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -2028,6 +2028,7 @@ int jbd2_journal_register_shrinker(journal_t *journal) return 0; } +EXPORT_SYMBOL(jbd2_journal_register_shrinker); /** * jbd2_journal_unregister_shrinker() @@ -2040,6 +2041,7 @@ 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. -- 2.22.0